Type: Barred Spiral

Constellation: Leo

Distance from Earth: 30 million light-years

About: A member of the Virgo galactic supercluster, NGC 2903 was discovered by German-born astronomer William Herschel, who cataloged it on November 16, 1784. It holds two designations 2903 and 2905 in Danish astronomer John Louis Emil Dreyer’s New General Catalog. NGC 2905 was later used to describe a luminous area in the northeast spiral arm.

Imaging Project Information

Imaging Telescope: Celestron EdgeHD 8 Schmidt-Cassegrain

Imaging Camera: ZWO ASI533MM Pro

Mount: iOptron CEM60

Accessories: Celestron 0.7X Reducer · Celestron Off-Axis Guider · MeLE Overclock 4c · Pegasus Astro Powerbox Advance Gen2 · Pegasus Astro Uranus Meteo Sensor · Pegasus Astro USB Control Hub · Primaluce Lab Essato 2″ LP robotic focuser · Primaluce Lab GIOTTO 255 Smart Flat Field Generator · ZWO EFW 8 x 1.25″

Filters and Frames:

Antlia Luminance 1.25″: 48×300″  bin 2×2
Antlia Red 1.25″: 30×180s bin 2×2
Antlia Green 1.25″: 30×180s bin 2×2
Antlia Blue 1.25″: 30×180s bin 2×2
Antlia EDGE H-alpha 4.5nm 1.25″: 16×600s bin 2×2

Software: Acquisition – Nighttime Imaging and Astronomy (N.I.N.A)  Pre/Postprocessing: Pleiades Astrophoto Pixinsight

Acquisition Period:  2/14, 2/20,  3/3, 3/6, 3/9, 3/10, 3/17/2024

Total Integration: 11hrs