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 - First Galaxy of the Season (Again 2019), 


            Kurt Zeppetello
NGC 2903 - First Galaxy of the Season (Again 2019)

NGC 2903 - First Galaxy of the Season (Again 2019)

Technical card

Resolution: 3772x2789

Dates:March 4, 2019March 6, 2019March 23, 2019

39x90" (gain: 139.00) -20C bin 1x1
ZWO B 1.25" optimized for ASI1600: 39x90" (gain: 139.00) -20C bin 1x1
ZWO L 1.25" optimized for ASI1600: 57x90" (gain: 139.00) -20C bin 1x1
ZWO R 1.25" optimized for ASI1600: 40x90" (gain: 139.00) -20C bin 1x1

Integration: 4.4 hours

Darks: ~10

Flats: ~15

Bias: ~20

Avg. Moon age: 24.82 days

Avg. Moon phase: 32.01%

Bortle Dark-Sky Scale: 5.00 job: 2619813

RA center: 9h 32' 10"

DEC center: +21° 30' 14"

Pixel scale: 1.206 arcsec/pixel

Orientation: 104.365 degrees

Field radius: 0.786

Locations: Happy Frog Observatory, Monroe, Connecticut, United States

Data source: Backyard


NGC 2903 is once again the first galaxy I have imaged for galaxy season. It is a barred spiral galaxy about 20 million light-years distant and popular among amateur astronomers as it is easy to find. Being in the constellation Leo, near the top of the lion's head it was in the perfect spot for me to image. This year I have a new larger telescope so I may go after more galaxies this year. I am happy with how this one turned out and processing was very easy compared to my last couple of projects.

The spiral arms show more detail than last years image and along with the details of the bright core and extraordinary dust and gas clouds makes for a pleasant image. NGC 2903 exhibits an exceptional rate of star formation activity near its center. The size of this galaxy is just a little smaller than our own Milky Way at about 80,000 light-years across making it a good twin of us (source: APOD). If you have a good eye just below the galaxy there is a small 'little fuzzy', this is PGC 27115 - UGC 5086, Stellarium has it listed as an active magnitude 18.00 galaxy.



Kurt Zeppetello
License: None (All rights reserved)

Sky plot

Sky plot


NGC 2903 - First Galaxy of the Season (Again 2019), 


            Kurt Zeppetello