Key words: "Because I have another better scope for planetary observations, I rarely push my AR127 above 80x" A 6" F/8 Dob is a much better scope for planetary and costs $300. You already have a nice wide field (that you can also look at the Moon with) Buying things that make your scope live up to it's potential makes sense IMO. If you buy anything for your AR 102, maybe it should be the widest field best corrected 2" EP's that you can afford. (And not waste money changing purple to yellow) $300 6" Dob beats the planetary detail that can be seen in a $3000 4" APO. AR 102, best in 4" class widefield. 6" F/8 Dob best in ($300) class planetary. I might eventually switch to an ST 120 for wide fields, but the 6" Dob has to stay as the cheap planet killer on my to buy list. https://www.amazon.c...2/dp/B0018IWQC8 Halfway to the price of something that could actually see way more planetary detail. A filter or another scope that could see deeper DSO's as well. Edit: If the color is objectionable send it back for a refund (save up a little more $) and try the A.T. 102 ED or SW Pro 100 ED, or even the new F/11 ED from Altair astro. If you like refractors
I said that but I still experiment with expensive filters on the AR127 at high power nonetheless because I’m an equipment junky who derives as much fun looking at the sky as with testing different pieces of equipment .
Edited by AxelB, 21 February 2019 - 06:15 PM.