Friday 28 February 2020

Small Pinwheel Galaxy NGC 3184 in Ursa Major

A lull between rain storms, I was able to get almost two hours of data for NGC 3184, 39 x 180 s exposures. The mount is tracking beautifully and its light pollution that prevents me doing longer exposures. The star colours aren't brilliant. Apparently this is one of the problems of using a DSLR as opposed to a CCD.

NGC 3184 in Ursa Major

Wikipedia: NGC 3184 is a spiral galaxy approximately 40 million light-years away in the constellation Ursa Major. It has two HII regions named NGC 3180 and NGC 3181.

NGC 3184 houses a high abundance of heavy elements and (SN 1999gi) that was a magnitude 14 Type II supernova detected on December 9, 1999

Friday 21 February 2020

NGC 2903 in Leo

First time in February that there has been clear skies without a gale force wind! The clouds came over around 10 pm, so I only have 35 x 180 s exposures of NGC 2903.

APOD had this galaxy as a picture of the day and the description went:

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.

NGC 2903 in Leo