After some research and working out what I need I think I need the EOS clip in filter for my 1200D and a 1.25" for my Atik and ZWO.
These are the ones I found which look to be the popular ones. I am looking to mod my 1200D so I am guessing I will need the CLS CCD version?
1.25" Baader Semi APO Filter to help with light pollution and chromatic abberation with my refractor
https://www.ozscopes.com.au/baader-s...25-filter.html
EOS Clip in light pollution with my SCT and possibly with my refractor?
https://www.bintel.com.au/product/as...s-ccd-filters/
Or could i get a 2" version and attach it to my focal reducer instead of getting the clip in EOS.
So many options, so confusing!