Celestron corrector plate.
Page 1 of 2 - Celestron 9.
Celestron corrector plate With the secondary and the corrector plate the secondary center needs to be within 1-2mm of the optical axis; that's easy enough to check with a Hotech, bit harder without but not impossible and that's quite a bit of wiggle room . Corrector plate/Corrector lens – a thin lens Cleaning Celestron corrector plate. As I understand it, the corrector plate is manufactured specifically It's been nearly 6 years since I bought my Celestron 11" EdgeHD telescope and I've noticed the inside portion of the corrector plate somehow got dirty. There are two alignments: corrector plate-secondary mirror assembly to primary mirror, and corrector plate to secondary mirror. I also grabbed a Cleaning my corrector plate - posted in Celestron Computerized Telescopes: So I followed the directions preciselyMixed 1/3 part 91% isopropyl, 2/3 part distilled water, and a couple drops of liquid soap. While looking for an out of production field flattener, I came across this European Use for broken SCT? - posted in ATM, Optics and DIY Forum: I bought a Celestron Nexstar 6se sct with a broken corrector plate on ebay earlier. I need some help or suggestions on how to remove a corrector plate that is stuck to the cork like rim. The mirror and inside of the corrector plate looked like they had been fogged/dewed-over a few too many times, and perhaps the built-in fan brought in a layer of fine dust and distributed it. JPG It was not a very good performer. Does anyone know what a new corrector plate might cost, so I have an idea. com Phone: 1-800-421-9649. The C11 corrector glass, is about 1/4" thick and weighs about 3 lbs. 95. I’m very much tensed. Do I just leave it alone? Any other ideas or options that I should consider? Also did you try calling Celestron for a corrector plate? Email: mail@celestronsupport. Then move your hand’s orientation so that its I gather Celestron corrector plates were matched with the mirrors (the orientation should be kept constant too). Both surfaces are covered with a cloudy residue. I have doubts whether a non-matching plate would give good A Replacement "corrector plate" lens for Celestron C8 both standard & Edge HD. Every time I To find out, simply reach your hand around and place it in front of the telescope’s aperture, without touching the corrector plate. From the negative copies the production plates are made. heavier Maksutov corrector plate takes longer to Celestron Plate Mounting Screw Thread Sizes - posted in Cats & Casses: Does anyone know the screw sizes that Celestron uses to mount their various accessories to their SCTs? Im talking about the tapped holes at the top and bottom of the OTA. The scope is pristine except the cap is missing and the corrector plate is dirty from years of dust build up. I already have an 8se ota, and Celestron 9. Rotation of corrector plate and secondary mirror - posted in Cats & Casses: I have a Celestron C11. No longer is star hopping needed and you’re able to find objects Examining the tube and plate, there were no surprises or other permanent or potential problems that I did not expect, but the corrector plate is quite dirty, as shown above LanguageTool, a powerful grammar checker excels at identifying and correcting punctuation errors, including commas. I discover this service doesnt exist. While the glass is much cleaner than before, worrisome dew stains and what looked like pollen marks removed, I am stil less than happy with the results. Manufactured & supplied by Celestron. I dont see why the inclusion and/or exclusion of shims would have any bearing on whether or not the rotation of the corrector is important. HAPPIER SKIES AND KEEP LOOKING UP Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. 3 – Ideal for Deep-sky Observing & Astroimaging – Works w/Schmidt-Cassegrain Telescopes . Removed, cleaned the corrector plate on my 8SE - posted in Celestron Computerized Telescopes: After much consideration, I decided today to remove the corrector plate on my 8SE and do a proper cleaning on the inside. I posted not long ago about a crack which appeared in my C9. For DSLR astrophotos, try lots more flats captured in Av How do I clean the corrector plate on my 8se? - posted in Beginners Forum (No Astrophotography): Hello, last night I was running an observing session from inside on my computer. I need it Remove the corrector plate from the OTA, and place the laser directly into a 2" visual back. For best performance, the corrector plate must be replaced in exactly the same position it was in prior to removal. 25, but the answer is general to any SCT where the secondary cannot be removed without first removing the corrector plate. After contact Celestron inquiring for a new coating treatment. Equipment shown in this video: (some of them contains affiliate links)Telescopes:Cano Page 1 of 7 - My broken C14 corrector plate project - posted in ATM, Optics and DIY Forum: A C14 has been my dream scope for a long time. I made inquiries and I can purchase a replacement from Celestron UK for around £170. Hi all, For Fastar-equipped SCTs, turn the triangular cover plate either clockwise or counterclockwise to reveal the collimation screws. 2) you will be hard pressed to find a spare corrector plate. In the Celestron method the correctors are made Page 1 of 2 - 8" SCT with crack in corrector lens - posted in Cats & Casses: Ive got a line on an older Celestron 8 SCT, however the corrector lens has a crack in it. , %TC is Corrector Plate Transmission %RP is Primary Mirror Reflectance %RS is Secondary Mirror Reflectance. I start to find Broken Celestron 8SE corrector plate . I looked into the Celestrons website on lens cleaning and they suggested 50%-70% alcohol to rub it Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. Doesn’t corrector plate require cleaning ? Page 1 of 2 - Celestron 9. fortunately I have found a clean original corrector plate of the same model. CPC 800 secondary and corrector alignment - posted in Celestron Computerized Telescopes: I new-to-me CPC 800 arrived here with an incredibly dirty (on the inside) corrector. Cleaning a Schmidt Cassegrain - posted in Equipment (No astrophotography): Hi Everyone, I have to perform a complete cleaning of my CELESTRON SC CPC800. My ~15 year old The C8 corrector plate has a crack from the secondary mirror to the outer edge of the corrector plate. I have a simpler question. This is a double beam instrument with a spectral range of 190 to 1100 nm. Once a nut in the tube fell off. Members; 46 54 Location: West Midlands, UK; Posted January 30, 2016. secondary and corrector plate of Celestron SCTs which, if you wish, resides currently on page 5 entitled, "Corrector Plate Rotation - Myth or Fact". Ive had the Corrector plate off once before About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Page 1 of 5 - Corrector Plate Cleaning? - posted in Cats & Casses: My new to me SCT has a pretty smudgy corrector plate. 25 xlt corrector plate collimation - posted in Cats & Casses: I have an old 9. Also looks like a smoker previously owned it. This telescope has impressive views of celestial wonders and features a 6-inch aperture and advanced optics. Visit the Celestron Store. The glass corrector plate is a notorious dew magnet. Anyhow, I removed the Celestron won’t quote a ballpark estimate fixing cost, and shipping the telescope from and back to Hawaii is expensive already. I have cleaning kit , also I found small white dot on the plate I dont now what is it anyone have idea. A Replacement "corrector plate" lens for Celestron C6 both standard & Edge HD. 25 telescope and Im curious about the potential problems that could arise from a slightly misaligned Corrector Plate, aside from the astigmatism affecting bright stars. UK Page 1 of 2 - What Celestron says about Corrector plates and mirrors - posted in Cats & Casses: This topic insinuates itself into almost every discussion of SCTs. Ive search and read more than half a dozen threads here at CN, and Im still not sure whether I should get a dew shield with a build in heater, or separate dew shield and heater. Might be worth doing every 2-3 years. Hope this helps Jim . The info Ive found so far is split into 3 camps. Page 2 of 2 - Corrector Plate Rotation--- Myth or Fact ? - posted in Celestron Computerized Telescopes: Sorry another resurrection. I did however use three evenly spaced little pieces of flocking board as shims to make sure the corrector plate was dead Shattered Collector Plate - posted in Celestron Computerized Telescopes: I have a CPC1100 and it tipped over today on my scope buggy and the Collector Plate shattered. I live in Pakistan and can’t send the OTA to USA. But what happens if you end up with a scope that someone else disassembled and put back together upside down and backwards and marked nothing? What a mess! Thank Reassemble an SCT (corrector plate and secondary) - posted in Cats & Casses: The instrument is an older Celestron 9. The entire unit looked new, until we pulled off the front dust cover. This is how I managed to Meade have now overtaken Celestron, by a small amount (the new Meade coatings appear to give a flatter response curve than the Celestron offering, with better response at the red end of Double check with Celestron customer service & support in the U. I used my scope without a dew shield a number of times and as a results I have a number of marks, spots etc on the outer corrector plate which I havent cleaned Nexstar 6SE Schmidt corrector plate cleaning - posted in Celestron Computerized Telescopes: When I was observing last weekend in a park the water irrigation near me started to spray water onto my scope and it left some dust patterns after dried. Price includes collimation. It is made such that the camera (DSLR in my case) can remain installed on the corrector, which IMO hugley Corrector Lens Removal / Cleaning Tips / Videos? - posted in Celestron Computerized Telescopes: I have a an odd, spiral shaped haze on the inside of my 8SE corrector plate and have come to the conclusion that its removal & cleaning has become necessary. Do not order if there is additional damage to the interior (mirrror, focusing), as repair will be unviable. Peter Drew. Cleaning solution is as recommended by Celestron 60% ISO and 40% distilled water. Celestron Corrector plate source - posted in Cats & Casses: A few days ago, someone posted that they needed a replacement for a broken C11 corrector plate. See our replacement optical tube assemblies (OTAs). Its a Meade LX10 with EMC coatings. I purchased a circa 1975 diecast orange tube C8 recently for $300 Canadian dollars (@ $225 USD) from a person who These corrector plates help in achieving compact designs and provide sharp, high-contrast images by reducing distortions like coma and chromatic aberration. Cleaning Camera Sensors I use a solution called "Eclipse" (the manufacturer is "Photographic Solutions, Inc. Because of reason one and also Celestron doesn't sell them. " and it is available from most stores that sell supplies to professional About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Celestron – Focal Reducer & Field Corrector Imaging Accessory – Reduces Focal Length & Ratio 37% – f/10 to f/6. I would like to please ask you guys for a bit of advice. The Celestron NexStar 6SE Telescope has an extensive stargazing package designed for beginners and experienced astronomers. This question is about aligning the The Celestron dew control system brought a few major changes to the game. I also did not track the Page 1 of 2 - 8" SCT with crack in corrector lens - posted in Cats & Casses: Ive got a line on an older Celestron 8 SCT, however the corrector lens has a crack in it. Ideally, you should have noted the position of the corrector plate within the cell, as Celestron placed them in the proper alignment position, held by the rubber gasket material, but without spacers. New mount alone is $429. UK customers only. Celestron Plate Mounting Screw Thread Sizes - posted in Cats & Casses: Does anyone know the screw sizes that Celestron uses to mount their various accessories to their SCTs? Im talking about the tapped holes at the top and bottom of the OTA. 25 Corrector Plate axial alignment ? - posted in Cats & Casses: The OTA is a Celestron 9. Am I wrong? Cleaning corrector plate and primary on C6-SCT - posted in Cats & Casses: I am going to be taking the corrector plate off, well the cell holding the entire corrector plate and secondary, not actually taking the glass out of its holder, to do some work to the baffle tube in the middle of the primary. There are actually two centering issues here; the secondary the corrector plate and the corrector plate in the cell. Does not appear too difficult to disassemble and clean. I have located a mark and etched number on the edge of the corrector and a corresponding mark and number (742, if that matters) on the bottom (uncoated) side of Not meant to be a how-to. Subject to dew accumulation on corrector plate If the corrector plate has been removed (say on a Celestron SCT) to be cleaned and then put back on, how critical is it that the plate is placed in the same orientation and be parallel to the main mirror? Certainly I've pushed my Dynamax 8 corrector assembly from side to side +/-2mm and could see no change in an artificial star image after Page 1 of 2 - Corrector plate damaged by Celestron during a warranty repair - posted in Cats & Casses: Hi, Ill make a longer post about my nightmare experience with sending my CPC to Celestron for repair when Ive calmed down but in the meantime I would like some advice please on this situation. It's a shame Celestron stopped center marking their secondaries all those years ago A Replacement "corrector plate" lens for Celestron C9. For making a few replacement plates one would be better off to tool up Make-do fixes after a broken corrector plate - posted in Cats & Casses: Its disheartening to see the appeals for replacement SCT corrector plates by owners of older or discontinued models for which Celestron and perhaps Meade do not offer replacement units. Additionally, however, a dew shield keeps stray light from entering the telescope, be it from direct nearby sources Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. I need it as near to perfect as possible for imaging. My C8 (built 2011) didn't have any shims when I removed the corrector to flock the tube. Read why this Astropotamus still uses one. The scope is worth maybe 300 Page 2 of 2 - What Celestron says about Corrector plates and mirrors - posted in Cats & Casses: I tried one of these Meade 6 Maks a few years ago: : 101_0881. Bernhard Schmidt in Germany solved the problem by using an aspheric corrector plate, now called a Schmidt corrector. My understanding is that if there is any hand work applied it would be on the small secondary, as a result it would be this that was matched to the primary, the corrector acting as a carrier and Celestron cpc EdgeHD 1100 corrector plate broken - posted in Cats & Casses: Hi. Like all Celestron Schmidt-Cassegrains, the C6 XLT uses a spherical primary mirror, an aspherized convex secondary mirror, and a Schmidt corrector plate to focus sharp images and provide a long focal length in a compact package due to the magnifying nature of the convex Foggy C11 corrector plate - posted in Cats & Casses: My 12 year old C11 has developed a foggy corrector. Theres already some dust specks building up that I am not going to worry about as I know theyll be so far out of focus as to not affect imaging. topic starter; Posts: 85; Joined: 14 Jul 2012; Posted 24 June 2018 - 02:25 AM. They said Celestron does not sell corrector plates. Because of this interaction between the corrector and the primary, they are matched, albeit coarsely, in the Celestron I gather Celestron corrector plates were matched with the mirrors (the orientation should be kept constant too). I know the orientation where I should put back the corrector plate as there were marks. This is the only adjustment available to the end user and should be the only adjustment required to bring the telescope’s optics into excellent collimation. 7 out of 5 stars 664 ratings The corrector plate is carefully aligned with the primary mirror rotationally. Note: Removal and adjustment of the optics in this manner may void your Celestron warranty. First, the dew heater ring is in direct contact with the glass of the corrector plate, applying heat directly instead of through the metal of the outside of the tube. Corrector plate-secondary mirror assembly to primary mirror Remove the retaining ring. dare not do again until am wiser. Our founder, Tom Johnson, invented Celestron’s proprietary method of producing Schmidt corrector plates for superior views and maximum portability. Servicing time Page 1 of 2 - Are these for centering the corrector plate? - posted in Cats & Casses: Hi, I have an older made in USA c14 xlt and there is some hex screws at the front of the OTA where the corrector plate sit. Presumably the objective mirror is uniformly round, of course ground to a uniformly spherical shape, and the corrector has to correct for the entire Page 1 of 2 - Secondary Mirror Assembly Rotating in Corrector Plate - posted in Cats & Casses: I am looking for some help. Page 1 of 2 - Replacing a Celestron C9 1/4 corrector plate & co - posted in ATM, Optics and DIY Forum: I had a nasty Christmas present in the from of a C9 1/4 with the corrector plate broken during shipping and wondered if any one has any experience of replacing one. And yes the corrector plate and primary mirror are a figured pair. I removed a deteriorated coating on the corrector plate on a Meade 8" CAT with a scale remover, and I believe the particular product was CLR. I believe it was clean when I purchased it. The scope is in need of lens cleaning and I cant figure out how to get the corretor plate loose from the rim. In the 1970s, the classic Celestron 8 brought the hobby of astronomy to the masses and established Celestron as the world’s premier telescope maker. By maltrabob January 30, 2016 in Getting Started General Help and Advice. maltrabob. i cleaned unnecessarily my corrector plate and there are a few light marks (not scratches as i understand that word) but a bit of film, minor streak, tiny bits of coating removed or it may be they would polish out. The included NexStar+ hand control with a Help keep dew and dust off the front of your 6" & 8" Schmidt Cassegrain, EdgeHD, or RASA (with single dovetail) optical tube's front corrector plate with the Celestron Flexible Dew Shield DX. 25 probably from the late 90s. 7 4. A couple of good videos of adjusting the question about centering the corrector plate from a Celestron edge 8" sct - posted in Cats & Casses: Hi, Since my edge 8 was still a bit foggy inside, I tried to take it apart for cleaning. The most extreme example of focal reduction is the Starizona HyperStar system, available on Celestron SCTs. For various reasons over its 10-15 year lifetime the corrector plate has been removed. I can probably remove a couple of the screws and The Schmidt-Cassegrain Telescope (SCT) is a compound telescope that combines mirrors and lenses to create an image. Somewhere Id seen concerns that it could damage the corrector You can achieve correct collimation by adjusting the tilt of the secondary mirror housed at the center of the Schmidt corrector (see Figure 1). I took the SCT apart for cleaning. Novice to Telescopes - SCT Corrector Plate Alignment ? - posted in Cats & Casses: I bought an older Celestron Super C8+. I dont know much about SCTs but I do know that a crack in that is not a good thing. tha corrector was very, very ugly. But in the end, I decided to The thread Crow recalls was me. Is there a working side that is ,does side matter , when installing. I opened my scope recently for "maintenance" and there is a small mark on the corrector plate. 25 HD Edge Corrector Plate Issues - posted in Celestron Computerized Telescopes: I had to remove the corrector plate in my 925 as there was a rather sizeable piece of rubber floating around inside the scope - the rubber appears to be a piece of what Celestron used to cushion the sides of the corrector against the side of the scope. John's information seems to be about the best and most thorough especially if it is the procedure that Celestron uses. The Reducer/Corrector is easy to install by threading the unit onto the rear cell of your Schmidt-Cassegrain telescope (or the reducer plate of the C11 and C14). Ended up Dewing up something fierce. But sooner or later Ill want The dew heater ring has a continuous footprint around the corrector plate which could be placing stress on the section of the corrector plate in front of the notched area. In complete working order, selling because I purchased a new one. I would not touch a corrector plate unless it On some telescopes, Celestron included locking setscrews on top of the centering screws so check that you can turn the actual setscrews that touch the corrector plate. I didn't much like the plastic around the Meade secondary but it does the job well. I dont know So I followed Celestron's instructions to the letter to clean the plate. Only corrector plate needs replacing. Some basic information: I have used this scope for about 3 hours total. All the patents are available, the issue is that Celestron makes their corrector plates by the "Master block" method. I can probably remove a couple of the screws and Page 1 of 4 - Celestron SCT optimization - posted in Cats & Casses: Hello all! I have bought a used Celestron C9. Brought it in the house and pointed int down and low and behold there ended up being moisture inside the the OTA. Based on the finder scope mounting shoe (same as the ones on Explore Scientific scopes), I would say that JOC was the maker of this Meade LX85 M6. My CPC1100, Cubble, has arrived back home with me after Here is a shot of the C11 corrector plate and secondary mirror assembly. The mirror is undamaged. The C11 Corrector Plate Cork Ring - posted in Cats & Casses: I need to replace the cork ring under the corrector plate retaining ring on an older C11 that was unforked from a C11 GPS. To be honest i don't really fancy taking the corrector plate out either. There seem to be at least 2 different threads sizes, possibly 3. I bought a 2 channel W&W Astro Controller together with one of th I store mine the same way. , and if they are not able to ship a corrector plate, you might have to purchase an optical tube assembly Newtonian 114 mm Equatorial mount with clock drive and 20 mm eyepiece. On the My Celestron C8 Corrector plate problem Facebook; Twitter; Youtube; My Celestron C8 Corrector plate problem. It also makes it harder to accidentally touch the corrector plate. Above the corrector, there were cork plates, whose correction I also think I know because of Celestron’s CGEM mounts have always proven to be popular, but if you find the motor isn’t working as well as it should, you can swap it out with a Celestron Motor Assembly. 5 lbs. 25 corrector lens/plate. Do not order if there is additional damage to In a Celestron, the optical axis of the telescope is mechanically defined by the baffle tube and the primary is bonded to be aligned with the baffle. By trynda1701 March 12, 2014 in Discussions - Scopes Corrector plate cleaning - posted in Celestron Computerized Telescopes: Hey folks,So heres a question Ive been wrestling withhow often/when should one clean the NexStar 6 SE Corrector Plate - posted in Celestron Computerized Telescopes: Hello This is Khalil , New friend from Syria , living in Saudi Arabia. I cleaned it very carefully by Soft Cotton Pads dipped in Mixture of water and few drops of dish washer followed by lens cleaner liquid but I’m not Condensation on my corrector plate - help! - posted in Celestron Computerized Telescopes: I noticed that there is residue from a condensation drip on the inside of the corrector plate of my 14 Celestron SCT. The smudges/drips are at the 6:00 and 3:00 positions with the tube horizontal/parallel to the ground. Transmission data is typically collected in the Power up with this bundle and witness over 40,000 celestial objects at your fingertips. OK Aligning a C8 corrector plate - posted in Cats & Casses: I bought a basket case C8. Still, if your broken Celestron NextStar 5 SE came with working Nexstar SE mount you got a very good deal. A used C8 goes for 400-600$, sometimes even cheaper. I have doubts whether a non-matching plate would give good When the corrector plate is placed into the tube there is a rim around the inside of the tube that the plate is seated in; that rim is machined to be parallel with the primary mirror so if it's correctly seated then it is parallel. More mechanically and how they are aligned if they are. While the scope is apart I would like to properly clean the primary and Curious about SCT corrector plate orientation - posted in Cats & Casses: Ive always heard that the orientation of the corrector plate is somehow matched up in a particular way with each OTA, but Ive never understood why. Every time I take it out, Im in awe of the details I can see with the planets and on the moon. Made from flexible and durable polyethelene plastic with a hook-and-loop closure for fast and easy installation and removal, the shield's interior surface is lined with black felt to absorb The corrector plate is carefully aligned with the primary mirror rotationally. I currently have a DIY dew shield for my EdgeHD 8” and thinking about getting some kind of heating for it as dew was forming on the corrector plate last time out. The mirror and inside of the Use for broken SCT? - posted in ATM, Optics and DIY Forum: I bought a Celestron Nexstar 6se sct with a broken corrector plate on ebay earlier. I did however use three evenly spaced little pieces of flocking board as shims to make sure the corrector plate was dead C11 Edge Corrector Plate - posted in Cats & Casses: Hi, During an estate sale I managed to get hold of a C11 edge with Perfectly fine Secondary & Primary mirrors but a broken corrector plate. I then took the corrector plate off with no luck of getting these weird spots off. It has all the appearances of out-gassing contamination (not streaked). Do not order if there is additional damage to the interior (either mirrror or focusing), as repair will be unviable. A dew shield will help a lot but I would recommend an additional heater installed The Celestron Reducer/Corrector Lens for SCT Telescopes (#94175) INTRODUCTION Imagine having two telescopes in one — a long focal (or the reducer plate of the C11 and C14) by This video shows the best way to remove water spots from a mounted SCT corrector plate when water spots cover most or all of the surface. However, I am wanting to use a Hyperstar Page 1 of 2 - Celestron 9. Corrector Dust Cap for NexStar 5SE Telescope Well, after removing the corrector plate and detaching the secondary housing of my C11, I was very surprised to see that the secondary mirror orientation marks that, according the Celestron's knowledge base article referenced above, should have been at 3 o'clock when staring down the business end of a C11 were in fact at about 5 o'clock . It also serves as a Len Shade by preventing stray light from falling on the corrector The Celestron C8 Schmidt-Cassegrain is one of the longest running continuously produced telescopes in history. Shipping it to Celestron was considered, as was shipping it back to the seller. ? what Freeing the corrector plate on a C8 - posted in Celestron Computerized Telescopes: I recently acquired an old Celestron C8 SCT. 25” It's carefully and subtly made to counteract the spherical aberration arising from the primary mirror. Was just wondering if any owners/previous owners of a C8 could point me in the direction of a tutorial that they found to be helpful in cleaning the optics on some of the older/vintage This is how I clean my corrector plate and only needs to be done if very grubby as over cleaning is much worse than a dirty corrector plate. This type may be removable in the manner you suggest. Any corrector plates for the Celestron C8? - posted in Cats & Casses: Recently I noticed these strange speckles all over my c8 corrector plate (the front glass) and I could not seem to get it off by gently cleaning it. It is at 180 degrees opposite of the focusing knob. What may not be so easy is the inconvenience and anxiety of using a small, metal Allen wrench or Phillips screwdriver in the dark just above the vulnerable surface of your telescope's corrector plate to turn the three SCT - Misaligned Corrector Plate Issues - posted in Experienced Deep Sky Imaging: Hello, I own the Celestron EdgeHD 9. NEW: Elements ThermoTank 3. If your Celestron isn't one of the Chinese-assembled units, then you might have to deal with the cardboard (yes, you read correctly!) spacers previously used to centre the corrector within its seating flange - later units have proper, adjustable nylon spigots that make corrector removal & installation much better although you do have to "pull Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. Celestron 9. As I understand it, the corrector plate is manufactured Remove the corrector plate. I'm thinking of keeping it in the house now along with my eyepieces. However, after talking to a Celestron Corrector Plate - posted in Classic Telescopes: After ten years well stored ,I found my vintage Celestron C8 with large spot in the corrector plate. By sighting from the front Celestron Nexstar 6SE Corrector Plate Cleaning - posted in Cats & Casses: Hello fellows, I recently purchased a Nexstar 6SE and have a few questions about cleaning C5 Corrector Plate removal? - posted in Celestron Computerized Telescopes: Ive spent some time searching, and can find nothing in the way of instructions. I tracked the corrector plate rotation but not the positioning. I think they are from dew because I went out a few times and the whole Page 1 of 4 - SCT Corrector/Secondary Orientation - posted in Cats & Casses: Hi Folks, I am considering cleaning my 10 LX-200 optics. 25 xlt. It is the Starbright XLT. For simple viewing this doesn't seem to significantly affect performance. Perhaps Celestron QC isnt as high quality as we would be led to believe. The realistic answer is the best and cheapest option is to send it to Celestron. The usual Chinese sites don't offer corrector plates and all the suppliers I see are in the 250-400$ range just for the glass alone. Page 1 of 2 - Celestron RASA 11 v2 disassembly for cleaning - posted in Cats & Casses: I recently acquired a used Celestron RASA 11 v2. This helps the heat conduct better through the entire corrector plate, keeping even the center free from dew. This C11 Corrector Plate Centering - posted in Cats & Casses: Dear Forum, I have a big problem, I own a C11 and I am unhappy with the image no matter how accurate I adjust the secondary mirror Searching on web it seems that corrector plate centering is important. The Celestron - C11 Optical Tube Assembly - 11" SCT OTA for CGE/CGX - 91036-XLT Celestron C11 OTA 11" Schmidt Cassegrain Optical Tube Weighing only 27. StarBright XLT is Celestron’s revolutionary optical coating system that outperforms any other coating in the We use a Shimadzu UV1601 spectrophotometer for analysis of corrector plate transmission. Hi all, The Celestron dew control system brought a few major changes to the game. Primary and Secondary mirrors are still in perfect shape, as I removed broken plate easily from telescope. 3. Cost? The corrector itself might be $100-200, the testing to find the Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. 1. I checked all the website and YouTube video to clean corrector plate of my Celestron cpc EdgeHD 1100. I took it out one night to do some viewing. You must remove all the broken glass. Some corrector plate cells are attached using screws with nuts inside the tube. The primary mirror of a typical SCT has a focal ratio of f/2. The front corrector plate was removed, rotated, and put back on to match with the original factory alignment marks (someone, somewhere, somewhen, had rotated it 180 degrees) Custom Corrector Plate Cover For RASA 11 - posted in Celestron Computerized Telescopes: Hey After months of planning & designing, I am happy, proud and relieved to announce that I finally have a custom made corrector plate cover for my RASA. The scope is worth maybe 300 How do I remove the corrector plate from the tube of a Celstron 14HD? - posted in Cats & Casses: Due to stray light issues with the use of a Hyperstar on my Celestron 14HD, I like to install flocking paper on the inside of the telescope tube and the outside of the Cassegrain baffle that need to be less reflective. Need a Corrector plate for a NexsStar 8 OTA - posted in Celestron Computerized Telescopes: All,I have a NexStar 8 OTA with a cracked corrector plate. Celestron does and it turns out also cares about alignment of the corrector using something better than cork or paper which Replacement corrector plate for C8? - posted in Cats & Casses: Has anyone had to replace a C8 corrector plate? I went to look at a Nexstar Evolution 8 that was advertised on ebay earlier this week. i have got all excited and interested in astronomy and finally got a 6 inch celestron SCT on a HEQ5 mount. I have a Celestron NexStar You can buy OEM corrector plates from Celestron, typically via a dealer. A Replacement "corrector plate" lens for Celestron C11 both standard & Edge HD. The collimation was off when I got it and the corrector plate was off a bit (checked with the iPad method as well as with a Hotech Advanced CT Laster). The easiest way to do this seems to be to remove the There was a thread about this perhaps five or six months ago that span out of a discussion of someone selling one of the Celestron SCTs on ebay with a broken corrector plate. Back to top #14 karimooo karimooo. I also did not track the Corrector plate factory position is? - posted in Celestron Computerized Telescopes: Question for Rod (or other SCT Guru)On a past thread, (which I can no longer find using search)I believe Rod Mollise mentioned that the factory setting for the corrector plate should be with the etched marks at the 3 oclock postion (when facing the corrector plate). On the trail, at the job site, in the classroom, or simply sitting at home relaxing – the Celestron Elements ThermoTank 3 will keep your hands toasty. First, a little background about why I needed to clean it in the first This seems to work well for the Celestron SCT's. So, if you look inside the tube, the focuser knob will be at your left hand, the mark has to go to the other side - right hand side. Same thing, as Luigi mentioned, with my Celestron C8. Aside from the fact that the adjustment allen heads were all buggered up and took some time to get out Celestron does this by hand-figuring the secondary mirror to remove residual. I estimate the casting is within 3 thousands of level. Pick up only, no Very clean Celestron Advanced GT that has been recently cleaned and serviced. or so. Corrector had been removed, I don’t know if it was installed in the same position, or if the cork spacers were installed. Its punctuation checker can differentiate between optional and Spare corrector plate parts are generally unavaliable, and even if you could find one it may not be a good match. Dust off the corrector plate with a very soft wide artists brush to remove any grit. Can anyone advise. While looking for an out of production field flattener, I came across this European The latest Celestron SCTs no longer use corrector plate shims at all so I'm not sure if they're that important even in older scopes. These brands have consistently No, because these are high transmission coatings designed to allow the maximum amount of light to pass through the corrector plate. In the realm of catadioptric telescopes, brands like Celestron and Meade have forged a reputation by consistently designing high-quality telescopes. The OTA is as vertical as I can position it using a precision machinist level on the casting edge. Avoid using a focuser on the back of the OTA if at all possible, I placed the laser into an Astro Scratch on Brand New Celestron Nexstar 8 SE Corrector Plate - posted in Equipment (No astrophotography): Hi, I just received my brand new Celestron Nexstar 8 SE Corrector plate cleaning - posted in Celestron Computerized Telescopes: Celestron cpc EdgeHD 1100 please see below picture. It looks like it got the crud off the plate, however when it dried it created smear marks. However in your case, a new corrector plate may be had from Celestron. What is the actual measured diameter of a 8in Schmidt corrector plate out of its factory cell. If you are used and confident about this job, you have to remove the corrector plate from the scope for cleaning otherwise you will have difficulties to access and clean the few millimeters near the edge of the corrector and to remove the crud collected at that place. I believe nylon grub screws Cleaning the outer surface of corrector plate 8SE? - posted in Celestron Computerized Telescopes: HiI ve seen a few posts regarding dust and cleaning of the inside of an OTA. I recently purchased a second-hand Celestron Nexstar Evolution 8 HD, very lightly used. Celestron corrector plate location mark - posted in Cats & Casses: Normally when taking apart an STC you mark the location of the parts so you can reassemble it in the original factory positions. Once installed, you can add additional accessories like T-Adapters, 1. Explorer 1. Im not sure about re-assembly and if there is a special alignment. Smudge on Interior Side of Corrector Plate - posted in Celestron Computerized Telescopes: There are some rather large drips of what looks to be some kind of lubricant on the inside of the corrector plate of my CPC 1100. 1) corrector plate is the weakest spot and almost always breaks first. designed to fit on the front end of the telescope to reduce the amount of dew that builds up on the corrector plate. The SCT uses a spherical primary mirror, a secondary mirror, and a corrector plate to correct spherical aberration, resulting in a compact and adaptable instrument. I ordered a Howie Glatter 2 inch laser with holographic rings. If then they were placed on the inner surface, a good proportion of the light hitting the plate would be reflected back before even passing through the glass to meet the priimary mirror. 4. The scope has never been apart. Corrector plates have anti-reflective coatings, but they are hard and not so easily scratched as long as you only use very mild cleaning solutions and are gentle. 2. Further to this the follow up support in rectifying these issues seems somewhat lacking. My corrector had some fingerprints on it, not even sure how they Celestron cpc EdgeHD 1100 corrector plate replacement - posted in ATM, Optics and DIY Forum: Hi my Celestron cpc EdgeHD 1100 corrector plate got broken (picture) attached. Ive done some Googling and searching and have come across one video and several suggestions If your stars are not round even after collimation it could be a sign that the corrector plate is not in alignment. Moisten a Kim Wipe folded into a square with the cleaning solution. aberrations in the system. From previous experience, does anyone out there have the Celestron Catalog Number for such an animal? Emilee with Celestron customer support has been very helpful Page 1 of 2 - Dew prevention on an SCT - posted in Cats & Casses: I am the proud new owner of a used C9. Last year I decided to purchase Bobs knobs as I had never collimated my telescope and everyone praises them. The primary mirror shows some dry condensation marks and there are some dusts (looks like eyelashes) on the secondary optical face. Now I have had a few SCTs and know that when a corrector plate is Cleaning Celestron corrector plate. Servicing time It's been nearly 6 years since I bought my Celestron 11" EdgeHD telescope and I've noticed the inside portion of the corrector plate somehow got dirty. 25 SCT - possibly misaligned corrector plate - posted in Cats & Casses: So I have a 9. A Schmidt corrector plate is an aspheric lens which corrects the spherical aberration introduced by the spherical primary mirror of the Schmidt or Schmidt–Cassegrain telescope About 300 Celestron Schmidt cameras Cleaning of Corrector Plate of CPC EdgeHD 1100 - posted in Celestron Computerized Telescopes: Hi all. The The thread Crow recalls was me. There were 3 series of 1/4 inch long marks about 1/32 inch apart that looked like something had Cleaning corrector plate/mirror on vintage Celestron C8 - posted in Classic Telescopes: I have found a number of posts and YT videos on the subject of cleaning the optics on SCs. 25 carbon fiber SCT. I’m not sure how old it is as I am not the original owner. Nexstar 5 corrector plate cleaning - posted in Celestron Computerized Telescopes: Hey everybody, I just bought a new Nexstar 5 that has been sitting in a box unused since it was a display model however many years ago. On the trail, at the job site, in the classroom, or simply sitting at home relaxing – the The C8 corrector plate has a crack from the secondary mirror to the outer edge of the corrector plate. From previous experience, does anyone out there have the Celestron Catalog Number for such an animal? Emilee with Celestron customer support has been very helpful Page 1 of 2 - Celestron RASA 11 v2 disassembly for cleaning - posted in Cats & Casses: I recently acquired a used Celestron RASA 11 v2. My recollection is that (allegedly according to a Celestron optical engineer) the corrector and primary are not matched specifically, but that any defects are corrected by Page 2 of 3 - EdgeHD Corrector Plate Removal reveals Poor Celestron Tooling ? - posted in Cats & Casses: Sounds all too fimiliar with my queries around my chipped edges on a new secondary mirror. The connection to the eyepiece broke, and there is probably more extensive internal damage. I have always admired the size and awesomeness of the C14 and finally was able to get one for a great price but with one major flaw : A broken corrector plate. There are two half circle gaskets positioned in between the corrector and the scope body and a final circular plate that covers the corrector edges and this is what gets This service was established by our company to satisfy the demands inherent in the replacement of damaged corrective plate for the entire line of commercial telescopes Celestron and Meade. I had checked the weather Page 1 of 2 - 6SE Corrector Plate - posted in Celestron Computerized Telescopes: Hi,Im looking at a used 6SE and it looks to have some dust on the inside of the corrector plate. My question; 1. So recently I have noticed that the secondary mirror baffle is very loose. Posted January 30, 2016. I'll maybe leave it a while and see what celestron would charge for a service. In addition, the corrector plate was very hazy with lots of dust Page 1 of 2 - Celestron Orange Tube 1975 C8 Cleaning and Refurbish - posted in Classic Telescopes: I just wanted to say thank you to many of the bloggers here for info on taking apart an orange tube C8 to clean the optics and bring it back to life. Also of I have considerable doubt that Celestron hand figure the corrector plates, they are too weak in optical power to make it suitable for hand figuring. It would seem in the original alignment procedure, that first the corrector was Celestron EdgeHD 8" Corrector Plate Install - posted in Cats & Casses: I purchased a used EdgeHD 8. Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. Posted October 29, In the 1970s, Celestron’s Schmidt-Cassegrain telescopes brought the hobby of astronomy to the masses and established Celestron as the world’s premier telescope maker. Celestron Schmidt Corrector Plate Questions? - posted in Cats & Casses: Hello I am engaged in a project, adapting a 8 in Celestron Schmidt Corrector to a 8in spherical primary mirror. It can be safely stored resting face down on the secondary housing which also protects the recessed secondary mirror. 25 both standard & Edge HD. Not long ago there was a passing reference to a SCT owner who substituted a biscuit-cut plate Celestron 9. The corrector plate is broken. Then I watched the video from Starizona on the same subject. 25 Celestron SCT that I purchased 6 years ago. Etc. It isnt new, rather new-to-me. 25 and the first nights out were a disappointment. The original ring has two felt pads that are Celestron Nexstar 6SE Corrector Plate Cleaning - posted in Celestron Computerized Telescopes: Hello fellows, I recently purchased a Nexstar 6SE and have a few questions about cleaning corrector plates. The reason Im asking is that I had to remove the Corrector Plate Hi all. Im assuming this is an issue for people, especially if you crack one. Also looks to be a big glob on the Dew Heater Recommendations for Celestron Edge HD 8" - posted in Beginners Forum (No Astrophotography): My question is just what the title states. It wiggles around and rotates with very little pressure. There was also some accumulation of The latest Celestron SCTs no longer use corrector plate shims at all so I'm not sure if they're that important even in older scopes. Had a go at cleaning the corrector plate on my 8" EdgeHD today with somewhat mixed results ?. The secondary mirror has a 5x amplification factor. On that type, you cannot remove the corrector in its cell. Being mass-produced, I am believing that the axial orientation of a Meade or Celestron SCT corrector plates and secondary mirrors are not really as critical as I am being told. I would call Don, his number is on that web link, he has thousands of scope parts . S. Got cotton pad wet, but not dripping, and dragged it across the face of the plate. There are also claims that the corrector is supposed to be paired to the primary, and at least screened for duds (another + for repairs at Celestron). Page 1 of 2 - What does the corrector plate actually do? - posted in Cats & Casses: I have owned SCTs for some years now and just accepted the basic design with the corrector plate up front, the light passing through to bounce off the primary mirror, then being focused to bounce off the secondary back through to the diagonal and into the eyepiece. This problem crops up regularly and often the solution consists of returning the scope to Celestron and paying for a new set of optics at considerable cost. Meade does it by "parts swapping" (trying different Being the proud owner of a C9 1/4 carbon fibre tube with a broken corrector plate from some one called Chris in Rome who strung me along until it was too late to make a paypal claim I Page 1 of 3 - EdgeHD Corrector Plate Removal reveals Poor Celestron Tooling ? - posted in Cats & Casses: So after summoning up the courage, I finally got around to removing the corrector plate on my 8” EdgeHD, cleaning necessary, really bad water stains on the interior of the corrector (made the mistake of leaving it outside under a supposedly breathable cover) . It was badly out of collimation and I suspect, that the corrector plate was removed and rotated, since even after my initial collimation attempts, I cant C11 Corrector Plate Cork Ring - posted in Cats & Casses: I need to replace the cork ring under the corrector plate retaining ring on an older C11 that was unforked from a C11 GPS. This work has to be reserved to advanced handyman Cleaning the Corrector plate (aka: Doubt sets in, I don't think I can get this to 100%) IPA (99%), Acetone (was told that is what Celestron uses to clean their optics), Vinegar (breaks up calcium deposits but be careful with acidity), Windex (ammonia kind), and CLR. By mistake my Celestron cpc EdgeHD 1100 corrector plate got broken and needs replacement. EdgeHD 8" Misaligned Corrector Plate - posted in Cats & Casses: So I have a new EdgeHD 8 and going through the process that the hyperstar imagers do (https://www. Dew can be a problem for SCTs. moisture was create this spots in the coating surface. This motor and encoder assembly works with either the RA or Declination axis of the mount, making this a convenient, cost-effective solution. Now I need to know how to properly install, align and collimate. The Celestron secondary housing had a tendency to rotate. I already have an 8se ota, and the mount, tripod, diagonal and controls were the reason for purchase. Some Maksutovs have their corrector and cell threaded into the tube. Somebody asks what color the knobs are and all of a sudden we are off to the races about corrector plates, their pairing with mirrors and the spinning thereof, ostensibly with disastrous results. All went well, and it was quite a bit easier then I thought it would be. In the 1970s, Celestron’s Schmidt-Cassegrain telescopes brought the hobby of astronomy to the masses and established Celestron as the world’s premier telescope maker. Subject to dew accumulation on corrector plate Cleaning XLT coating corrector plate - posted in Celestron Computerized Telescopes: I have 8SE , and there is a layer of dust on XLT coating corrector plate , how often should I clean the corrector plate . It had a thick-ish film and several spots/rings formed around some kind of particulates. First, the dew heater ring is in direct contact with the glass of the corrector plate, applying heat Celestron’s award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. In an attempt to enjoy Mars yesterday I accidentally moved my Celestron 8SE without attatching it properly to its base. . cloudynimize-perf-r3013) I find that my corrector does not appear centered with the primary mirror; its not concentric like the image later in that link. These alignments should be understood before On the trail, at the job site, in the classroom, or simply sitting at home relaxing – the Celestron Elements ThermoTank 3 will keep your hands toasty. Also not sure if they didn't sell them that their rationale would be to prevent negative press of badly Celestron 11 Edge HD Corrector plate cleaning - posted in Celestron Computerized Telescopes: Hi, Considering buying this Edge HD 11 but it looks like attempts we made to Page 1 of 4 - Celestron SCT optimization - posted in Cats & Casses: Hello all! I have bought a used Celestron C9. So I have to disassemble the mirrors from the tube, get them The C6 is a 6” (150mm) f/10 Schmidt-Cassegrain with a focal length of 1500mm. A master is made by the "standard" vacuum pan method and from it negative "master" copies are made. I live in Pakistan so I will have to install it myself which I can but the main issue where to find the replacement corrector plate ? Please help me. On newer SCTs, Celestron has introduced 3 or 4 nylon screws thread through the corrector cell into the edge of the corrector plate in order to accurately center the corrector to improve Fastar The corrector plate is broken. The SCT is known for its portability and versatility among both amateur Celestron’s EdgeHD 8 is an even more versatile telescope than the original C8, with a design great for almost every type of astronomical viewing or imaging. How much does a crack in the corrector affect viewing? Ill probably pass on the scope but it does have me wondering. Once the rear cell came loose while removing the Optec dovetail ring. You can't just replace the corrector; Celestron would have to replace the entire optical system which is probably at least 500-600 bucks. Our First Contact Po Page 1 of 2 - Can't remove HyperStar from corrector plate - posted in Celestron Computerized Telescopes: I have been using HyperStar for some time now without problems The optical roughness is not coming so much from the secondary but the different processes used to make the corrector plate. I sent Celestron an email inquiring about a replacement, said I didnt care about an optical match. Removal of Corrector Plate on the Celestron Edge HD 8" - posted in Cats & Casses: At some point I am going to need to clean the inside of the corrector plate of my Edge 8. Recommended Posts. This is just a brief overview of what it takes to remove the corrector on a Celestron Edge SCT. Do any of you with Celestron SCT have an opinion on which dew heater is the best? I was originally looking at the Celestron Dew Heater Ring. Ive read about rotating them for best In this video I will show how to adjust SCT corrector plate alignment. How do I clean this? Im thinking I need to remove the secondary mirror to clean it. Very good mount with goto capabilities. If they are willing to supply only a replacement corrector Page 1 of 2 - C9. (I know that Celestron aspherized, if necessary, in the past, and Meade didn't, relying, instead, on the 'mix and match' approach, but Celestron C5 corrector plate and secondary alignment - posted in Equipment (No astrophotography): Alright, i have taken apart a C5 corrector and secondary which was just spinning freely in the tube. ? 2. I removed the corrector and found the primary and secondary mirrors are pristine and there is not a Dirty corrector plate / fungus-like "stains" - posted in Celestron Computerized Telescopes: Hey everyone! I have been having trouble using barlows since lots of specks appeared in my images I then realised that it was because of my dirty corrector plate :/ Is everything okay with this part? Can I just clean it? If so, how do it proceed with the cleaning? Reassemble an SCT (corrector plate and secondary) - posted in Cats & Casses: The instrument is an older Celestron 9. This question is about aligning the corrector plate parallel to the primary mirror. ddmhizjbevbpntqkulthprjqbphydposppyezctuflfpcmjvlfp