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Contains:  NGC 2903, NGC 2905, NGC2903, NGC2905
Getting plate-solving status, please wait...

Technical card

Dates:May 5, 2019

Astrodon E-Series Blue filter: 30x600" bin 1x1
Astrodon E-Series Green filter: 30x600" bin 1x1
Astrodon E-Series Red filter: 30x600" bin 1x1
Astrodon Ha 3nm: 16x1200" bin 1x1
Astrodon Luminance E-Series: 60x600" bin 1x1

Integration: 30.3 hours

Avg. Moon age: 0.54 days

Avg. Moon phase: 0.32% job: 3270069

RA center: 9h 32' 10"

DEC center: +21° 29' 52"

Pixel scale: 0.743 arcsec/pixel

Orientation: -90.017 degrees

Field radius: 0.422 degrees

Resolution: 3187x2565

Locations: Entre Encinas y Estrellas E-EyE, Fregenal de la Sierra, Extremadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura


It was the prospect of the barred spiral in an open presentation with its spectacular spiral arms that attracted Steve and I to start gathering the data on this target, having seen some fine examples on the site and on APOD. After the first few luminance subs we were excited to capture more. Ha data livened the image displaying the evident star forming regions for which the galaxy is noted.

From APOD: "Barred spiral galaxy NGC 2903 is only some 20 million light-years distant. Popular among amateur astronomers, it shines in the northern spring constellation Leo, near the top of the lion's head. That part of the constellation is sometimes seen as a reversed question mark or sickle. One of the brighter galaxies visible from the northern hemisphere, NGC 2903 is surprisingly missing from Charles Messier's catalog of lustrous celestial sights. This colorful image from a small ground-based telescope shows off the galaxy's gorgeous spiral arms traced by young, blue star clusters and pinkish star forming regions. Included are intriguing details of NGC 2903's bright core, a remarkable mix of old and young clusters with immense dust and gas clouds. In fact, NGC 2903 exhibits an exceptional rate of star formation activity near its center, also bright in radio, infrared, ultraviolet, and x-ray bands. Just a little smaller than our own Milky Way, NGC 2903 is about 80,000 light-years across."

Data acquisition: Barry Wilson & Steve Milne
Processing: Barry Wilson



Barry Wilson

Sky plot

Sky plot




            Barry Wilson

In these public groups

Entre Encinas y Estrellas (e-EyE)