Mike Lewis

Staff Member
This a narrowband image of the Eastern Veil (also known as Caldwell 33), whose brightest area is NGC 6992, which is part of a much larger nebula complex known as the Veil Nebula, a supernova remnant. This image is created using data collected through Ha, OIII, and SII narrowband filters, to bring out complex details and enhance contrast. Since some of the wavelengths emitted are not detected by the human eye, and the object itself is too faint to detect visually, the colors are an artificial mix, created by arbitrarily assigned the different filtered wavelengths of light to visible colors of the spectrum. This 'mix' is just the one I found to be pleasing, and it also gives the charicteristic reddish colors for the Ha areas and the teal colors for the OIII regions. The color mix used is:

Red: 76% Ha, 24% SII
Green: 100% OIII
Blue: 95% OIII, 5% Ha

Equipment:
ZWO ASI1600MM-C Camera @ -15C and Gain:139 Offset:21
Software Bisque MyT Mount
Stellarvue SVQ100 Astrograph Refractor, 580mm @ f/5.8

Software:
Pixinsight Commercial Version 1.8
Lightroom CC
Photoshop CC

Light Frames:
Ha: 8 x 360 secs (48 mins)
OIII: 7 x 360 secs (42 mins)
SII: 7 x 360 secs (42 mins)

Dark Frames:
8 x 360 secs (48 mins)

Comments and critiques always weclcomed!


ML
 

Mike Lewis

Staff Member
Ummmm...It's actually called the Eastern Veil Nebula, not the ERasterrn Veil Nebula o_O (Good grief...) If I knew how to fix the title I would...

ML
 

AlanLichty

Moderator
Just above the image at the top of the thread and to the right is a drop down menu for Thread Tools. Click on it and then go down to Edit Thread and you can change the title.

Amazing shot BTW - I am fascinated by what you can shoot like this but it's not a realm of photography that I have any experience with at all. Beautiful result.
 

JimFox

Moderator
Staff member
Hey Mike, this is sure very cool looking. It's kind of different, it's like a cloud floating in space.
 

Mike Lewis

Staff Member
Hey Mike, this is sure very cool looking. It's kind of different, it's like a cloud floating in space.
Jim,

Well, that is basically what it is, clouds of gas in space, expelled by an ancient supernova explosion and ionized by star radiation to emit light at specific wavelengths based on the chemical composition of the gases that make up the clouds.

Thanks for the comments!

ML
 

Mike Lewis

Staff Member
Great photo! Don't think I've ever seen it so bright before.

You are going to cost me money. Next a mount, then filters.
CJ,

Yes, unfortnately, the astroimaging hobby can make a 4 mile wide crater in your pocketbook if you are not careful :)

The brightness is a combo of really dark skies, and a monochrome cooled camera using narrowband filters that filter out any additional light outside of the passband. That really kicks up the contrast a lot.

Thanks for the comments!

ML
 
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