There are no directions in space. This assembly is then put back onto the corrector plate and reinstalled into the telescope. NexStar 8SE Computerized Telescope | Celestron VAT included. How to collimate a Nexstar 8se - TheSkySearchers.com I had to clean the corrector plate on my 8" Meade Classic because of water droplets. The corrector plate is expensive, I believe its aspheric. I've cleaned it had some haze in a few areas of the corrector plate where the cleaning mixture appeared to dry. 1. The corrector plate in a Cassegrain is not a simple piece of plain glass. When you replace these screws, you will need to tighten them just as lightly. If you damage the corrector plate, it has to be replaced by Celestron, and it's going to cost you as much as a new telescope. He gave me instructions for attempting to tighten the secondary cell by removing the corrector plate and attempting to tighten the baffle from the inside. Disassembling a Celestron C11 - Laughton Some on the Celestron mailing list say that Celestron glues their secondary holders together and so they cannot be adjusted. you remove the screws, note how they are not screwed in very tightly. Do this until all the loose dust is removed. Also of concern is a coma shaped mark in the bottom left hand corner that I spotted prior to cleaning, and had hoped would be removed during the cleaning process. Not-so-clean Celestron interiors seem to be a common complaint on CN in the last 2 or 3 years. You might damage your corrector plate. The lens just lowers the quality of the image. Celestron C8, Remove and Reinstall Corrector Plate - posted in Equipment: Trying to collimate the C8 last night I winded up unscrewing the secondary holder and when I attempted to put it back on I winded up somehow loosening the retainer and it fell inside the scope. For cleaning your refractive glass and eyepieces, the best reference I have seen is by Dr. Clay Sherrod. A corrector lens for any eyepiece is unnecessary. Then I sent it back to the supplier for repair and Celestron claimed I used chemicals to clean the mirror which caused the OTA paint to fail. If you are cleaning small optical surfaces, use the rolled wands of tissue starting from the edges then spiraling in to the . Looks as though it may be stuck down from dew collecting on the surface and d. It can be safely stored resting face down on the secondary housing which also protects the recessed secondary mirror. Switch, Power Jack, Cables for NexStar 6/8 SE Telescopes. Just remember that the secondary holder and the corrector plate must stay in the same alignment and, when you put the corrector plate back on, make sure the notch faces 3:00. I used distilled water, 91% rubbing alcohol in 1:1 mixuter and a drop of Kodak Photoflow, along with medicinal grade gauze to appy the . 3y. Usually there is a piece of cork around the front cell to again protect the glass from being scratched. Flocking a Celestron 9.25" SCT . This. Corrector plate-secondary mirror assembly to primary mirror. This, added to the inability to utilize longer focal ratios for certain objects, led Celestron to design the four-element, fully multicoated f/6.3 Reducer/Corrector. Take an eyedropper with 91% or 95% alcohol and drop some of the solution between in the crack between the corrector plate and the metal of the tube. The corrector plate is removed first. Celestron Classic 8, Old Sears 60mm f/15 refractor, Old Edmund Scientific 6 inch F/8 newt, GSO 2" Diag, ES 30mm/70, ES 25mm/70, Orion 32 Super Plossl, Mead 24mm MA, After the baffle tube is unthreaded to allow the secondary holder to be removed. Link to our store page:http://www.photoniccleaning.com/Removing water spots from a SCT corrector plate, or any optic for that matter, is difficult because th. Each is a stack of three to six thin strips of paper slightly heavier than typing paper. 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. Then the baffle tube is unthreaded to allow the secondary holder to be removed. Cleaning Solutions for Optics -- MAPUG-Astronomy.net. You can google accurate recipies on ATM-forums. Celestron 9 x 50 Finder-scope included. With this product, you earn 284 loyalty points. Celestron Nexstar+ 127 SLT, several budget plossl eyepieces, Celestron 8-24mm zoom EP and a 12.5mm illuminated double reticle EP, Svbony SV205 camera w/.5 focal reducer, Celestron SkyMaster 20x80 binos on a 40 yr old QuickSet PanHead tripod, Stellarium, Sharpcap and ManyCam on my laptop, SkyView and Nightshift on my phone and a dandy little $9 . This assembly is then put back onto the corrector plate and reinstalled into the telescope. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . Note: a bit of dew has found its way onto the inside of the front corrector plate, and can be seen in the photos. The mark can be clearly seen in the attached photo. [Archive] REmoving corrector plate on the EdgeHD scopes ATM and DIY Projects. Not meant to be a how-to. Now unscrew the corrector retaining ring, and remove it. It is BS to say removing it is Easy, a 14" corrector plate is not a light weight piece of glass. That corrector plate is NOT just a plane piece of glass. By the looks of it so far Celestron really did amazing job cleaning up the scope. Learn More. The secondary mirror itself is then removed and placed into the new holder. On some scopes it may be necessary to actually pry the corrector My present C-8 is one of these. Batches of mirrors and corrector plates . 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. It may or may not be practical to get fixed. Some on the Celestron mailing list say that Celestron glues their secondary holders together and so they cannot be adjusted. It is at the moment the plate pops out of the tube that shims will fly all over the place! Gently hold the outer edge of the secundary holder whilst doing this so you can feel what's happening and control its movement. With the tube horizontal, most recent OTAs will have a mark or etching on the edge of the corrector plate at the 3 o'clock position (diagonally across the length of the tube from the focus knob). It's carefully and subtly made to counteract the spherical aberration arising from the primary mirror. Figure 1-1. Do this at various points around the corrector. He gave me instructions for attempting to tighten the secondary cell by removing the corrector plate and attempting to tighten the baffle from the inside. William Optics - 2" x0.8 Reducer APO Adjustable Field Flattener with M63 threads for GT71/GT81/Z103/Z81 (T-Mount NOT Included) $218.00. First remove the corrector plate. Use a thin-blade plastic screwdriver and work your way around the periphery judiciously prising the edge of the corrector upwards to loosen it. Cleaning solution is as recommended by Celestron 60% ISO and 40% distilled water. I tried this but it was just way too tight. When the paint peeled from the inside of my 18 month old Celestron 9.25 OTA I took the corrector plate out to clean the debris from the mirrors. Mirror shift is not bad at all. It can be safely stored resting face down on the secondary housing which also protects the recessed secondary mirror. I tried this but it was just way too tight. Here is a shot of the C11 corrector plate and secondary mirror assembly. to try to keep one hand on the corrector secondary housing just to insure £349.00. Once light rays enter the optical system, they travel the . The mirror is safely stored in a protective holder while outside the telescope. In most cases, the camera can be disassembled and serviced without removing the corrector plate. make sure the can is upright when spraying to insure propellant is not splattered onto the lens This might be all you need to . The same applies if you attempt to remove the rear casting: the nuts must be held in place, so the corrector has to come off. The red dot finder doesn't bring up any complaints. In these pictures there is an emphasis on using marker tapes, severed at the joint between casting and another removable part, to allow for proper re-alignment of everything on re-assembly. Part 8: Cleaning the Corrector Plate; Part 9: Installing the Corrector Plate and Closing the Tube; Part 1: Removing the Corrector Plate. Spring for dovetail ccompatible only for the CGEPro series. Cleaning Corrector plates should only be done once every 3-6 months. The 10mm eyepiece is decent for the price. 1. use hurricane blower over the entire plate first. Remove the retaining ring and set it aside. A method and system for making Schmidt correctors wherein the surface of a master glass template is ground and polished to an accurate inverse curve of a corrector plate, a thin glass workpiece is placed under vacuum on the master glass template in intimate curve conformed glass-to-glass contact over the entire mating surfaces, the template and workpiece being conjointly rotated while grinding . $284.00. Image of cleaning materials. Position after the seal is broken optics -- MAPUG-Astronomy.net this assembly is be. 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