January 2, 2011

NGC 3193, 3190, and 3187 (1-1-2011)

This is (at least) three of the galaxies in Hickson 44, a galaxy group in Leo (from the Hickson catalog). I have always thought this trio intriguing because of the different shapes shown (and also because it would fit in my small camera field). NGC 3193, upper left, is an elliptical galaxy that is nearly featureless. NGC 3190, by contrast, is a spiral galaxy that we see almost edge-on. It sports a prominent dust lane and smaller dust lanes branching off on the left. To the right of NGC 3190 is NGC 3187, also a spiral galaxy whose shape has been disrupted by other galaxies in the group, probably including NGC 3185, not pictured here. Most recent estimates put this group of galaxies about 80 million light years from us. Cite. My favorite image of the group is here.

This image was taken on my first night out with the Orion 10" newt. Camera was the Atik 16. An IDAS LPS2 filter was also used. The image is just 22x2'. The background is bright because I did not have enough signal yet (in just 44 minutes of exposure) from the galaxies to cut out skyglow noise.

2 comments:

RoryG said...

Nice! You need to post a pic of that 10" Newt. Was it a Christmas present?

Polaris B said...

Thanks, Rory. I'll post an image of the whole large setup soon. I actually sold a bunch of stuff and bought the 10". Does that qualify as a Christmas present? I've wanted to image through a larger scope ever since I found myself owning a mount that would handle it, and this newt looks like it will be very nice!