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Andromeda and the Moon
Andromeda and the Moon
johnfr


Photograph Information Photographer's Comments
Challenge: Composite II (ARCHIVAL) (Extended Editing*)
Camera: Canon EOS-5DS R
Lens: Sigma 800mm f/5.6 EX APO HSM for Canon
Location: Longmont, CO
Date: Dec 17, 2019
Aperture: 5.6
ISO: 1600
Shutter: 100 min. effective
Date Uploaded: May 6, 2020

 This is a composite of two photos that compare the size of the Moon to Andromeda. Andromeda is actually nearly 6x the size of the moon as viewed from the surface of the Earth. This scale comparison is extremely accurate, with both images captured at the exact same focal length of 800mm and with the same camera. Of course this is just apparent size in our sky on Earth, as Andromeda is MUCH further away. Given that the Moon is only 238,900 miles from the Earth and Andromeda is more than 2.5 million light years away, isn’t it staggering to think that Andromeda is the width of 6 full moons laid side by side in our night sky!

This image was shot with Canon 5DSR at F/5.6, The galaxy portion is a stack of 10 exposures of 10 minutes each for a total exposure time of 1 hour and ISO 1600 using a 800mm lens. The Moon, also shot at 800mm, is a stack of 9 exposures done at F/11, ISO 500 and 1/400th of a sec.

Stacking of Andromeda was done using DeepSky Stacker 4.1.1. Image was exported as a 32 bit tiff file and stretching done with Photoshop CC. I then converted it to a 16 bit image and did some final touch up. Stacking of the Moon image was done in Photoshop.

Statistics
Place: 14 out of 58
Avg (all users): 6.2500
Avg (participants): 6.0588
Avg (non-participants): 6.4211
Views since voting: 203
Views during voting: 132
Votes: 72
Comments: 5
Favorites: 0

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AuthorThread
 05/31/2020 09:14:44 AM
Beautiful! So jealous how you photograph the stars and the moon. Both look superb
 Comments Made During the Challenge
05/26/2020 08:45:08 PM
Very well done, looks so real.
 05/25/2020 05:51:27 AM
Wonderful image.
 05/21/2020 09:53:10 PM
Amazing!
 05/21/2020 03:58:14 PM
That's no moon... ;-)


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