NGC 891 - the Outer Limits Galaxy
Posted: Tue Dec 10, 2024 10:33 pm
This month's BDSI challenge thread target - first one in a while that fit my weather and interests.
AT130EDT, L3 uv/ir-cut, Risingcam IMX571c, CEM40, KStars/Ekos, PHD2. 390x120s subs at HCG, dithered every sub and registered with the CFA drizzle option in Siril 1.3.2alpha-dev.
I stacked exactly 13 hours of what I collected - there were a few hours of crummy seeing that did not make the cut, and even so I included some subs that I would have preferred to leave on the cutting room floor.
With these "small" galaxies, I always get at least as excited by the more distant background galaxies, which explains the odd framing of the main target up in the corner. To the far right is Arp 145, a really cool pair of interacting galaxies. Lower center are quite a few galaxies, many in the 200-300 Mly distance range. The two spiral in the lower-center are NGC 906 and NGC 914. The interesting one-armed spiral to the left of the red / orange star in the middle is PCG 9101, which I believe is estimated to be nearly 600Mly away.
Why, one might ask, is NGC 891 called the Outer Limits Galaxy? See here: https://youtu.be/v6FmpX3oePo?feature=shared
abin link for the image: https://astrob.in/ow1xz0/0/
AT130EDT, L3 uv/ir-cut, Risingcam IMX571c, CEM40, KStars/Ekos, PHD2. 390x120s subs at HCG, dithered every sub and registered with the CFA drizzle option in Siril 1.3.2alpha-dev.
I stacked exactly 13 hours of what I collected - there were a few hours of crummy seeing that did not make the cut, and even so I included some subs that I would have preferred to leave on the cutting room floor.
With these "small" galaxies, I always get at least as excited by the more distant background galaxies, which explains the odd framing of the main target up in the corner. To the far right is Arp 145, a really cool pair of interacting galaxies. Lower center are quite a few galaxies, many in the 200-300 Mly distance range. The two spiral in the lower-center are NGC 906 and NGC 914. The interesting one-armed spiral to the left of the red / orange star in the middle is PCG 9101, which I believe is estimated to be nearly 600Mly away.
Why, one might ask, is NGC 891 called the Outer Limits Galaxy? See here: https://youtu.be/v6FmpX3oePo?feature=shared
abin link for the image: https://astrob.in/ow1xz0/0/