Quote:
Originally Posted by multiweb
The deflection in the glass is in the order of 1/1000th of an inch at 80% off the center or so. It's virtually flat. The only way to identify which side is wich would be to put the corrector flat on a turning table and bounce a laser on it. Celestron used to mark the edges of the glass with a ">" sign to indicate which side faces outwards. Years ago I was talking to R.Piekiel and asked the same question, which side in. He said he saw both. Even correctors with profiles on both sides in the early models. I tried both sides on my C11 and it didn't make the slightest difference.
You have to remove the secondary to install an hyperstar cell.
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IC, mines an older model which the secondary is as far as I know not removable.
Re Hyperstar,Even more reason to clean the corrector in situe.
Cheers
