Cygnus Loop in Ha and Ha + OSC with homebuilt scope

[Stub Mandrel]

The colours are a bit wild, so this needs more work, but last night's Ha was so much better than I expected I thought I would share this anyway!

Considering it was a 97% moon it shows it is worth doing Ha with a DSLR - Pickering's Triangle was barely visible in the OSC-only shots, let alone all the fainter bits.

 

 

[tooth_dr]

Nice Job Neil.  I shot Ha last night with a mono camera, and colour with my DSLR.  The difference is quite pronouced.

 

I'm struggling combining my data, how did you do it?

[Stub Mandrel]

That's just Ha as about 60-70% of the luminance layer.

I had to slightly scale it as I'd added a spacer to the flattener to get round stars in the corners so alignment was a bit of a struggle.

[tooth_dr]

20 minutes ago, Stub Mandrel said:

That's just Ha as about 60-70% of the luminance layer.

I had to slightly scale it as I'd added a spacer to the flattener to get round stars in the corners so alignment was a bit of a struggle.

Thanks.  I find that my image looks pale pink but excessively bright when I add a lum layer over the OSC image.  I'll try it at 60-70%

[Allinthehead]

Nice job. Just need to add to the data to smooth it out a bit. 

I find using ha as luminance just washes out the colour and leaves you with a pink image. I do find that i can add it in at maybe 10-20% before that happens, watch your stars tho as it can have a negative impact. If you're using photoshop this is a great method. http://bf-astro.com/tutorial/addHa.htm

[MartinFransson]

On 24/09/2018 at 12:55, tooth_dr said:

Thanks.  I find that my image looks pale pink but excessively bright when I add a lum layer over the OSC image.  I'll try it at 60-70%

Add it to the red channel only instead. Blend mode "Lighten" in Photoshop. First split the channels, add the Ha to the red and then recombine them again.

[tooth_dr]

13 minutes ago, MartinFransson said:

Add it to the red channel only instead. Blend mode "Lighten" in Photoshop. First split the channels, add the Ha to the red and then recombine them again.

Thanks Martin.  I'll give that a go.