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InterStellarGuy
super member
Reged: 06/25/08
Posts: 113
Loc: Nebraska
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I tried this to clean off the 6" and I got some pretty good results I wanted to see what others thought..
If it is genlte dust and spots you want to remove but dusting or blowing doesnt work
I tried using a mister to mist the corrector with a mix of Isopropyl alcohol and distilled water, then pointed the OTA down and used compressed air to blow the mixture off the corrector..it would hit the sides of the oTA drip off, dirt with it.
Any thoughts?
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Celestron C8
Celestron Nexstar 6SE
Celestron First Scope 114
Celestron Nexstar 60
Celestron accessory kit
Celestron UHC 1.25 filter
Celestron UV/IR cut off filter
Celestron NexImage
Meade DSI Pro
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Treehopper
sage
Reged: 07/29/08
Posts: 215
Loc: Upstate NY
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I'm no expert, but if I had to make an educated guess, I'd say the distilled water is okay. The alcohol may leave a film or residue on your optics, and I'm not entirely sure how it will interact with any coatings that may be on them. In photography, using alcohol-based cleaners is a big no-no.
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Tim
Third oak on the right, and straight on 'til morning.
Meade ETX-125PE (NGC7000 Edition)
When I consider thy heavens, the work of thy fingers, the moon and the stars, which thou hast ordained;
What is man, that thou art mindful of him? and the son of man, that thou visitest him?
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Midnight Dan
professor emeritus
Reged: 01/23/08
Posts: 608
Loc: Brockport, NY
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The solution you used is good, but the technique might cause problems on an SCT. On an open reflector mirror, rinsing it with your solution would work well because it just runs off the edge of the mirror. But on an SCT, the corrector is mounted around the edge to a metal rim. When the liquid hits the edge it can wick into that edge and find its way inside the SCT.
Try this link for a good article on how to clean corrector plates:
http://www.arksky.org/asoclean.htm
I made up Dr. Clay's specified solutions (very similar to yours), used the recommended technique and can vouch for its effectiveness. It works great!
-Dan
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Scopes: Celestron NexStar 8, Orion EON 72mm ED/APO on Astroview mount (EQ3)
Eyepieces: Celestron 40mm, 25mm, Baader Hyperion 13mm, 8mm, 5mm
Other: Telrad, 2x Barlow, 0.63x Focal Reducer, Dew-not strips, DewBuster controller
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