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Veil Nebula  

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(@jamgood)
Brown Dwarf Customer
Joined: 1 year ago
Posts: 8
June 10, 2021 00:09  

This is my first attempt at a Mosaic and I'm very new to APP so I'm still finding my feet with it. This is two short nights worth of data but I'm really pleased with it so far. I've also learned a few new processing tricks along the way.

10x300sx6 Light Frames (50mins Per Panel) Cooled -10°
40 Darks
40 Flats
40 Dark Flats
Sky Watcher 130PDS
HEQ5 Pro with Rowan Belt Mod
ZWO ASI294MC Pro
TS-Optics GPU Superflat Coma Corrector
Optolong L-Enhance
Orion 50mm Guide Scope & Orion Star Shoot Auto Guider
Pegasus Powerbox Advance
Astro Photography Tools & PHD2
Astro Pixel Processor & Photoshop
Veil Nebula   6 Panel Mosaic

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(@wvreeven)
Quasar Admin
Joined: 3 years ago
Posts: 1122
June 10, 2021 00:18  

@jamgood That is a stunning image! Well done.


Jamgood liked
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(@jamgood)
Brown Dwarf Customer
Joined: 1 year ago
Posts: 8
June 10, 2021 00:23  

@wvreeven Thank you. I'm really pleased with it. Using APP to create it was nothing short of amazing as well. 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3810
June 10, 2021 07:55  

Well that is impressive indeed, new APP user and first mosaic attempt, superb!


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(@jamgood)
Brown Dwarf Customer
Joined: 1 year ago
Posts: 8
June 10, 2021 20:11  

@vincent-mod Thank you. I'm really enjoying using APP. Need to go back through some old data next.


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(@edarter)
White Dwarf Customer
Joined: 1 year ago
Posts: 16
September 30, 2021 19:43  

Can I ask what your method is to draw out the nebula? I'm working on a 2 panel mosaic of the Eastern Veil at the moment using a SW 130PDS with a Canon 600D (astro modded) . Despite my image having about 4hrs of data per panel I cannot get it to show anything like the detail you are getting and I'm struggling to find what I can do to improve it. 

I aspire to getting an image anything close to this!

Thanks
Ed


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(@jamgood)
Brown Dwarf Customer
Joined: 1 year ago
Posts: 8
October 1, 2021 18:25  
Posted by: @edarter

Can I ask what your method is to draw out the nebula? I'm working on a 2 panel mosaic of the Eastern Veil at the moment using a SW 130PDS with a Canon 600D (astro modded) . Despite my image having about 4hrs of data per panel I cannot get it to show anything like the detail you are getting and I'm struggling to find what I can do to improve it. 

I aspire to getting an image anything close to this!

Thanks
Ed

Hi Ed.

To be honest, I'd not actually done a lot to that image. APP produced a pretty good image right off the bat. I only tweaked it a little in Photoshop. The Optolong L-Enhance filter helped a lot with it though.

Are you using any filter? A narrowband filter to help pull the Ha out would really help but you should be getting some decent Ha with a modded Canon.

Can you post your stack up so I can have a look?

J


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(@edarter)
White Dwarf Customer
Joined: 1 year ago
Posts: 16
October 1, 2021 22:44  

@jamgood yeah using an LP filter, the astronomic CLS CCD clip in filter. TBH I strongly suspect there is a lot more data in there but I just don't know how to draw it out. There is also quite a bit of noise in this image but to be fair I've not focussed on that yet. JPG attached below. Bearing in mind there is about 5hrs data on this I would have hoped for more from it :/

Eastern veil up to 240921 full mozaic 2ndDeg 3it APP experiment

 


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(@jamgood)
Brown Dwarf Customer
Joined: 1 year ago
Posts: 8
October 1, 2021 23:33  

@edarter Yeah, there is quite a bit of noise in there. Obviously stretching will stretch the noise also, so that will hold you back.

Are you dithering between shots? Dithering really helps with background noise along with exposures as long as you can take them. Staying away from moonlit nights will also help but you are kind of stifled a bit with a DSLR though. Camera noise, non cooling, etc.

Have you tried using Starnet++? You can remove the stars from the image and stretch/edit the nebula and then put the stars back in to the image. I didn't know about Starnet++ when I used a DSLR but I think it would have helped me with my images back then. Here's a good tutorial for it.

Don't be put off though. That is still a great image 


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(@edarter)
White Dwarf Customer
Joined: 1 year ago
Posts: 16
October 2, 2021 13:26  

yep - dithering between each sub and keeping them to 4mins to try and combat heat build up in the sensor because of the associated noise increase. I suspect its a mix of me needing to get better at processing and the limitations of a DSLR.
Know of Starnet but not used it. Will have a look at that, could be useful!

 

Anyway, I'll stop hijacking your thread and crack on practising, your image is fantastic!

Ed


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(@jamgood)
Brown Dwarf Customer
Joined: 1 year ago
Posts: 8
October 3, 2021 01:54  

@edarter Yeah, I know what you mean. Learning new stuff in this hobby keeps us both enthralled and frustrated at the same time. Making do with what we have at hand though is limiting and upgrading is bloody expensive.

I went up to a ZWO ASI294MC Pro from a Canon 60Da in quite a hurry in my astrophotography journey because the Canon died on me. To be honest, it was a great leap forward. Controlling the temperature with a dedicated camera is big help with noise.

Have a look at Starnet, it's a good program. There's also a Skywatcher 130PDS Astro imagers group on Facebook which might be a handy place for you to have a look at. You'll recognise me by the avatar. 👍

Good luck and let me know how you get on. 


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(@mikecmp)
White Dwarf Customer
Joined: 1 year ago
Posts: 22
October 4, 2021 19:51  

I suspect that the nebula image is more drawn out than the stars b/c he is using a Optolong L-Enhance filter-  its a very nice "nebula" filter, the stars will be much dimmer in an image using a filter like this. I have the same filter on my small scope with my Canon DSKR and get similar images, they look very nice.

 

Great image by the way!

 

Mike


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