Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Carole on Sep 29, 2014, 19:16:33

Title: M82 HaRGB from Kelling
Post by: Carole on Sep 29, 2014, 19:16:33
I think I need better equipment to do this justice, but at least I managed to capture the Ha filaments which was the purpose of the exercise.

RGB 300 x 3 each binned x 2
Ha 1200 x 3
Skywatcher ED120 and Atik314L
NEQ6
Captured in Artemis, stacked in AA and processed in Registar and photoshop

(http://cdn.astrobin.com/images/thumbs/e6d575291bbdcf1172564084cc16c24f.1824x0_q100_watermark.jpg)
Title: Re: M82 HaRGB from Kelling
Post by: MarkS on Sep 30, 2014, 01:01:23
That is excellent.  You've captured those Ha filaments very well.  Overall, the image looks as if the seeing was the only limitation to further detail.

The only improvements I can suggest (apart from further luminance data to bring out more than just the galaxy core) are:
The background looks too black for my liking - so adjust the black clipping point
The larger stars are saturated disks.  If they are not burnt out in the subs then more sympathetic processing would improve their look.

Mark
Title: Re: M82 HaRGB from Kelling
Post by: Carole on Sep 30, 2014, 08:27:07
Thanks Mark.

I should explain that I only used the RGB for the galaxy itself which was a bit burnt out in the Ha data, the sky is only the Ha data, so there is no colour to the stars and I think that was how they came out and of course this is a fairly big crop, I will however go back and take another look.  Yes luminance data might help, I didn't take any lum only RGB and Ha. 

I'll take a 2nd look from the point of view of the sky and stars.

Carole

Title: Re: M82 HaRGB from Kelling
Post by: Carole on Oct 03, 2014, 10:58:47
Following feedback, a slight stretch to the background:

(http://cdn.astrobin.com/images/thumbs/bb09e51a3987ee899490a36cddd202f1.1824x0_q100_watermark.jpg)
Title: Re: M82 HaRGB from Kelling
Post by: MarkS on Oct 03, 2014, 19:04:05
Yes -that's better.

Mark