Coma

[Cosmic]

Hello all,

Is a coma reducer a must for AP through a 8" newton f5 @ prime focus. Is cropping the edge of the frame an option to cut out any visible coma.

I have recently cut my tube to get the dslr in focus, adding this will probably throw it out again im guessing?

Thanks,
Dan.:thumbsup:

[irwjager]

Hi Dan,

If you're not willing to buy a coma corrector (yet), you could get by with a barrel distortion correction plug-in (I know the GIMP has one, as does StarTools). I've had some very good results with those.

Cheers,

[Cosmic]

Thanks heaps for that, at least for now I can use that to tire me over. I'll just have to wait and see how bad the coma will be when I get out there.:prey: