5 replies to this topic

[mayhem13]

Hey folks! So I captured around 8hrs on Orion through L Enhance in my Bortle 9 yard with no moon at 60 seconds…..TONS of wonderful nebulosity but no blue, no purples and a blown out core. So tonight I’m grabbing another 2 hrs unfiltered at 15 seconds…..the trapezium is clear and clean in each frame. The question is what do I do now?……do I add this data to my existing and stack or do I stack it separately and treat each stacked image as a layer? 

[daveco2]

You need two separately stacked images so they can be composited together via masking.  Two layers with a mask in Photoshop would be straightforward.

 

You could go further and take a series of images at different exposures to bring out different levels of detail and color, then composite them all via layers with masks.

Edited by daveco2, 30 November 2022 - 10:58 PM.

[mayhem13]

Thanks Dave! I’ll get tonight’s work stacked up tomorrow and follow up. The masking part is new to me but I am a photoshop user so I’m sure I can find a video or get some tips here.

[daveco2]

This would be a good video for you.

 

https://astrobackyar...ion-nebula-hdr/

Edited by daveco2, 01 December 2022 - 01:00 AM.

[F.Meiresonne]

60 seconds should not blow out the core  https://www.astrobin.com/buqa5o/ . Picture was 90 sec subs

 

Allthough my red was limited too and the picture goes the blue...

[mayhem13]

60 seconds should not blow out the core  https://www.astrobin.com/buqa5o/ . Picture was 90 sec subs

 

Allthough my red was limited too and the picture goes the blue...

The core wasn’t as bad as I thought once I went back before the stretches. I’ve got this stack, a fast stack unfiltered at 10 seconds and I’m gonna capture one more sequence at 120 seconds to stack so I’ll have three images to overlay