Optolong CLS-CCD vs L-PRO vs UV/IR

[AndyThilo]

I currently have a 2" CLS-CCD, owned since I started 12 months ago. However I'm wondering if the L-Pro would be better for Galaxies etc..? I'm Bortle Class 4 so bit confused as to what's the best, maybe I only need a UV/IR block?

Any ideas/opinions?

Thanks  

[david_taurus83]

Bortle 4 is quite dark. Why do you use a filter at all?

[AndyThilo]

Star bloat. Figured no one was interested so I've ordered an Astronomik L2 UV/IR cut

[CCD-Freak]

I always use a UV-IR filters especially when imaging with a refractor.  I have also started using one with my 150 mm F2.8 Hyper Newt since I have found IR causing color problems.  The star at the left is normally fairly red but IR leakage causes it to be pink and it also brings out some micro lens artifacts.  Bottom line whatever filter you end up using make sure it cuts the IR.

NGC7023 90 x 120 seconds (3 hours total) at -5°C Gain= 100 ASI-533MCP Sharpstar 15028HNT (no filter)

John Love
CCD-Freak
WD5IKX

Edited December 14, 2020 by CCD-Freak