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Contains:  NGC 5477, M 101, NGC 5457
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M101, 





    
        

            NewfieStargazer
M101

M101

Technical card

Resolution: 4096x2717

Dates:March 28, 2019

Frames:
Astronomik Ha 6nm Astronomik 6nm H-alpha: 27x120" (gain: 139.00) -20C bin 1x1
Astronomik Blue 1.25": 40x60" (gain: 139.00) -20C bin 1x1
Astronomik Green 1.25": 40x60" (gain: 139.00) -20C bin 1x1
Astronomik Lum 1.25": 100x60" (gain: 139.00) -20C bin 1x1
Astronomik Red 1.25": 34x60" (gain: 139.00) -20C bin 1x1

Integration: 4.5 hours

Darks: ~40

Flats: ~40

Bias: ~100

Avg. Moon age: 22.43 days

Avg. Moon phase: 47.02%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 2985145

RA center: 14h 3' 13"

DEC center: +54° 20' 20"

Pixel scale: 0.684 arcsec/pixel

Orientation: 54.962 degrees

Field radius: 0.467

Data source: Backyard

Comments

Author

NewfieStargazer
NewfieStargazer
License: None (All rights reserved)
1270
Like

Revisions

  • M101, 





    
        

            NewfieStargazer
    Original
  • M101, 





    
        

            NewfieStargazer
    B
  • Final
    M101, 





    
        

            NewfieStargazer
    C

B

I added 58 minutes of Ha data that I forgot I had and I also re-calibrated by subs with APP to better deal with the Amp glow from the 183MM Pro.

C

Re-darkened the background while trying to retain some of the dust lanes in the galaxy arms.

Sky plot

Sky plot

Histogram

M101, 





    
        

            NewfieStargazer