Hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  NGC 2903
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NGC 2903, the overlooked galaxy, 



    
        

            Steven Bellavia
NGC 2903, the overlooked galaxy
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NGC 2903, the overlooked galaxy

Getting plate-solving status, please wait...
NGC 2903, the overlooked galaxy, 



    
        

            Steven Bellavia
NGC 2903, the overlooked galaxy
Powered byPixInsight

NGC 2903, the overlooked galaxy

Technical card

Imaging telescopes or lenses: TS-Optics PHOTOLINE 115 mm F7 triplet apo

Imaging cameras: ZWO ASI 294MM Pro (cooled)

Mounts: Sky-Watcher EQ-6R Pro SynScan

Guiding telescopes or lenses: The Bellavia Basic-II 50mm f/7.5 guidescope

Guiding cameras: ZWO ASI 290MC

Software: Pleiades Astrophoto PixInsight  ·  IDEIKI AstroPhotography Tool (APT)  ·  Stark Labs Nebulosity 4.2  ·  Annie's Astro Actions V7  ·  Noel Carboni's Astro Tools for PhotoShop Noel Carboni Actions  ·  SharpCap Pro 3.2

Filters: L  ·  R  ·  B  ·  G

Accessory: TS-Optics TS FLAT 2,5"


Dates:March 7, 2021

Frames:
B: 40x60" (40') (gain: 121.00) -10C bin 2x2
G: 40x60" (40') (gain: 121.00) -10C bin 2x2
L: 72x60" (1h 12') (gain: 121.00) -10C bin 2x2
R: 40x60" (40') (gain: 121.00) -10C bin 2x2

Integration: 3h 12'

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 23.65 days

Avg. Moon phase: 34.29%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.00

Mean FWHM: 2.80

Temperature: -3.00


Basic astrometry details

Astrometry.net job: 4292604

RA center: 9h 32' 11"

DEC center: +21° 30' 0"

Pixel scale: 1.194 arcsec/pixel

Orientation: 89.794 degrees

Field radius: 0.414 degrees


Resolution: 2076x1384

Data source: Traveller

Description

NGC 2903 is one of my favorite galaxies to observe and photograph.  I consider it the "first galaxy of galaxy season", to the West of the nose of Leo the Lion.

Yet  it has no Messier designation, and even Sir Patrick Moore did not include it on his Caldwell list.

NGC 2903 is a barred spiral galaxy about 30 million light-years away in the constellation Leo. It was discovered by William Herschel who cataloged it on November 16, 1784. NGC 2905 is a bright star cloud within this galaxy. NGC 2903 has a very high speed of creating new stars in the central region.

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NGC 2903, the overlooked galaxy, 



    
        

            Steven Bellavia