|
Matt IPA is isopropyl alcohol.
I know that Celestron recommend cleaning form the secondary out, however the last time I saw this done I ended up with a scatched corrector on a brand new scope. That was the dealer's doing on my new scope. I have since had that scope replaced.
In terms of what I was saying, the corrector should never be cleaned with a cleaning cloth, whether it be a lens cloth or not. That was my main objection.
When I say circular, I don't mean in a circle, I mean go in strokes a segment at a time parrallel to the secondary out to the edge of the scope. Every article I have read on corrector plate cleaning recommends this technique. In fact Meade also recommends this process, as do many other SCT manufacturers. The reason being that tine dust particles can and do lodge themselves near the secondary or the edge section and if you were to go in a radial pattern from the secondary out the edge of the corrector you could potentially scratch the plate from one side to the next.
Anyway, my whole point was to prevent you from damaging your coatings. Having seen this done, I don't want to see anyone else do this by accident.
Paul
|