Monday, January 19, 2009
More of Ursa Major... NGC 2403
I thought I would go ahead and image some other objects in Ursa Major, since my scope is set-up for this region right now, and I will have to re-balance everything to move someplace else. This galaxy is known as NGC 2403. It is very large and can be seen in a 4" scope very easily. It is near M81/82. This object is big enough and bright enough that Charles Messier should have caught it in his first catalogue survey, but did not. I underestimated it's size a little, and it is not centered well on the chip. I had to crop it to keep it even. It is a composite of 13 ten minute images with the ST7 ccd, all shot through the C6 sct at F6.3.
Not really a very interesting galaxy, it sort of looks like a big blur. It has a similar appearance to M33, the Triangulum Galaxy, but is pretty asymmetrical.