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Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205
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Messier 31 - The Andromeda Nebula Mosaic in 8K resolution, 





    
        

            Frank Schmitz
Messier 31 - The Andromeda Nebula Mosaic in 8K resolution

Messier 31 - The Andromeda Nebula Mosaic in 8K resolution

Technical card

Resolution: 7866x6412

Dates:July 9, 2018July 15, 2018July 16, 2018July 17, 2018July 18, 2018July 23, 2018July 31, 2018Aug. 2, 2018Aug. 3, 2018Aug. 6, 2018Aug. 16, 2018

Frames:
Baader Planetarium Ha 31mm 7nm: 144x180" -20C bin 1x1
Baader Planetarium L 31mm: 248x180" -20C bin 1x1
Baader Planetarium RGB 31mm: 340x180" -20C bin 1x1

Integration: 36.6 hours

Darks: ~30

Flats: ~30

Bias: ~100

Avg. Moon age: 12.95 days

Avg. Moon phase: 43.19%

Bortle Dark-Sky Scale: 5.00

Temperature: 22.00

Astrometry.net job: 2209605

RA center: 0h 42' 31"

DEC center: +41° 17' 6"

Pixel scale: 0.963 arcsec/pixel

Orientation: 269.998 degrees

Field radius: 1.357

Locations: Home, Odenthal, Deutschland, Germany

Data source: Backyard

Description

Wow, what a saga that was to put the mosaic together. This is my first LHaRGB mosaic ever and I had quite a hard time to match all the intensities ... especially for the color channels.

In the end I kept adding subs to low quality panels in order to even things out and zoooom I ended up with 36 hours of integration. My longest integration so far and by far the longest pre and post processing of all of my previous images.

Fun fact: My last two images (Melotte 15 and the Pacman Nebula) which were both also 9+ hours were only shot while waiting for M31 to rise ;)

I encourage you to have a look into the full view: NGC 206, Cepheid Var 1, the core, the HA regions, small faint structures in Messier 110 really profit from the high resolution and the exposure time.

I hope I did this wonderful target justice and I hope you like it! Let me know what you think!

Edit: It seems that Android Phone Browser tend to have a problem with the full resolution. It definitely wasn't the full scale I saw there

Comments

Author

zishor
Frank Schmitz
License: None (All rights reserved)
111439
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Revisions

  • Messier 31 - The Andromeda Nebula Mosaic in 8K resolution, 





    
        

            Frank Schmitz
    Original
  • Final
    Messier 31 - The Andromeda Nebula Mosaic in 8K resolution, 





    
        

            Frank Schmitz
    H
  • Messier 31 - The Andromeda Nebula Mosaic in 8K resolution, 





    
        

            Frank Schmitz
    I

H

Slightly balanced the colors a bit more to make the blue more blue and less purple

I

Lacking clear skies to gather more data on my next project I decided to give M31 a little touch up. Image is a lot cooler now (color temperature) and similar to my first panel I decided to annotate some nice features in the image.

Sky plot

Sky plot

Histogram

Messier 31 - The Andromeda Nebula Mosaic in 8K resolution, 





    
        

            Frank Schmitz