So I bought a used Celestron C6 and there was a massive foggy layer on the inside of it, most likely mold and I cleaned it with a microfiber cloth and lens solution. I am a beginner (probably wasn't the best idea to get a C6) The previous owner kept it in the basement for a while I think. All the foggy stuff came off then I noticed that in some areas the antireflective coating is damaged/missing. But only on the inside of the collector plate, thankfully not both sides. I get pretty massive chromatic aberration off of planets and anything I look at (just cannot focus it perfectly) I attached a photo of the aberration, I was playing around with the settings and lenses, tried the barlow, an apochromatic wide field lens, the eyepiece it came with and they all still show the chromatic aberration.
I did clean it and I most likely rubbed too hard in some sections so it came off, or the mold already ate into it, I have no idea which it was or a mix of both but I'm pretty bummed right now and I really don't know the best course of action. Will collimating it decrease the chromatic aberration? Should I call celestron and ask how much to re-coat it? I found another private company that advertises doing it: https://www.majestic...pe-coating.html
I am going to call them tomorrow for a quote as well. I also attached a picture of Saturn using my phone to the eyepiece, it looks slightly better in person but only a bit.
It was a beginner mistake to even buy the scope but I don't know what to do now if anyone can help I'd greatly appreciate it thank you
Edited by StargazerPrivateer, 03 August 2020 - 11:58 PM.