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Contains:  NGC 5195, Whirlpool galaxy, M 51, NGC 5194
Getting plate-solving status, please wait...
M51 - Whirlpool Galaxy, 





    
        

            pmumbower
M51 - Whirlpool Galaxy

M51 - Whirlpool Galaxy

Technical card

Resolution: 1514x1120

Dates:June 20, 2017June 27, 2017

Frames:
Astronomik LRGB IIc Blue: 10x240" -15C bin 2x2
Astronomik LRGB IIc Green: 10x240" -15C bin 2x2
Astronomik LRGB IIc Lum: 25x300" -15C bin 1x1
Astronomik LRGB IIc Red: 10x240" -15C bin 2x2

Integration: 4.1 hours

Darks: ~13

Flats: ~50

Bias: ~200

Avg. Moon age: 14.59 days

Avg. Moon phase: 17.09%

Bortle Dark-Sky Scale: 6.00

Mean SQM: 18.88

Mean FWHM: 3.70

Astrometry.net job: 1632735

RA center: 202.453 degrees

DEC center: 47.208 degrees

Pixel scale: 0.947 arcsec/pixel

Orientation: 90.877 degrees

Field radius: 0.248 degrees

Locations: Home Observatory, Grandville, Michigan, United States

Data source: Backyard

Description

First time imaging without the moon in the way in a long time. I had the collimation all set a couple of sessions ago and now it seems to be off for this image. Tracking was excellent and yet I have elongation of stars a bit. Regardless, I am still happy with this and to be imaging again.

Comments

Author

pmumbower
pmumbower
License: None (All rights reserved)
2440
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Revisions

  • M51 - Whirlpool Galaxy, 





    
        

            pmumbower
    Original
  • Final
    M51 - Whirlpool Galaxy, 





    
        

            pmumbower
    B

B

Collected the RGB data and this the first LRGB processing attempt

Sky plot

Sky plot

Histogram

M51 - Whirlpool Galaxy, 





    
        

            pmumbower

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