Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  NGC 2905, NGC 2903
Getting plate-solving status, please wait...
NGC 2903, 





    
        

            Chris Sullivan
NGC 2903

NGC 2903

Technical card

Resolution: 5544x3684

Dates:Feb. 10, 2019Feb. 17, 2019March 5, 2019March 6, 2019March 7, 2019March 12, 2019March 13, 2019March 17, 2019March 20, 2019March 24, 2019

Frames:
Optolong Blue 1.25": 98x120" (gain: 10.00)
Optolong Green 1.25": 92x120" (gain: 10.00)
Optolong H-alpha 7nm 1.25": 44x240" (gain: 10.00)
Optolong Lum 1.25": 253x120" (gain: 10.00)
Optolong Lum 1.25": 51x150" (gain: 10.00)
Optolong Red 1.25": 59x120" (gain: 10.00)
Optolong Red 1.25": 62x150" (gain: 10.00)

Integration: 24.4 hours

Avg. Moon age: 13.12 days

Avg. Moon phase: 45.76%

Bortle Dark-Sky Scale: 7.50

Astrometry.net job: 2601897

RA center: 143.041 degrees

DEC center: 21.501 degrees

Pixel scale: 0.426 arcsec/pixel

Orientation: 90.360 degrees

Field radius: 0.394 degrees

Locations: Home Roof (Bortle 7-8 / Est. Sky Quality: 18.53), Springfield, PA, United States

Data source: Backyard

Description

This just didn't come out how I was hoping. You'd think a bright galaxy like this wouldn't be all that difficult, but processing this was a nightmare. I think I shot myself in the foot by stacking the Orion SkyGlow Astrophotography filter in front of the reducer - I think it absolutely killed my blue channel (my green looks great, for what it's worth) and my lum data doesn't look much better. I've changed the filter situation already, but 1-2 images in the works will suffer for it as well. I got to say: Broadband under the bright skies of suburban Philadelphia is just tough. I refuse to give up - galaxies have always been my favorite subjects - but processing narrowband data is at least 10 times easier for me.

Comments

Author

Chris-PA
Chris Sullivan
License: None (All rights reserved)
3191
Like

Sky plot

Sky plot

Histogram

NGC 2903, 





    
        

            Chris Sullivan