Would a Field Flattener Help?

[Budgie1]

Below is an image of the NGC7000 I took last night.

It is 30 x 90 second lights at ISO 3200, 10 x darks and 10 x bias, taken with an unmodded Canon EOS 2000D, guided and using dither.

The scope is a Celestron 102mm Wide Field (52270).

I know this isn't the best scope for astrophotography, but I've got it and I like the wide field it gives so I want to see if I can improve the image quality.

Would a field flattener help to reduce the star bloat and purple halo with this scope, or isn't it worth trying?

My main scope is a SW Evostar 100ED with a 0.85 reducer/flattener and that's fine, but I want to make use of the 102 if I can.

Thanks for any advice.

 

[happy-kat]

I think the field flattener would help fix the corner star shapes. Chromatic aberration is from the none APO lens. I use post processing to address any chromatic aberration I get when I see it in the lenses I use.