Tuesday, January 27, 2009

More of M82


Here is M82 re-done with my ST7 ccd. A little more of the HA Tendrils can be seen.

Scope: Celestron 6" sct
Camera: SBIG ST7
Reducer: .63
Subexposure: 13 minutes
Images: 9
No Filter

Wednesday, January 21, 2009

The Spiral That Isn't a Spiral

Here is another anomalistic galaxy from Ursa Major. It is the peculiar NGC 2976, the spiral galaxy with no spiral shape. It has hints of a core, clouds of gas and dust, and a halo of outlying star clouds, but no spiral arm structure is to be seen anywhere. This galaxy has been torn apart by the gravitational forces exerted by it's larger neighbors. The small blur slightly to the left and down from this galaxy is the smaller galaxy, PGC 213630.

Scope: Celestron 6" sct
Camera: SBIG ST7
Reducer: .63
Subexposure: 13 minutes
Images: 15
No Filter

First UFO Image Obtained!

Hardly! This galaxy is NGC 2683, otherwise known as the UFO galaxy. It is a nearly edge on spiral named for it's shape resembling a "flying saucer".

Scope: Celestron 6" sct
Camera: SBIG ST7
Reducer: .63
Subexposure: 13 minutes
Images: 10
No Filter

Tuesday, January 20, 2009

More Weirdness from Ursa Major


Ursa Major is full of strangeness. For example, M82 - the exploding galaxy, or NGC 2976 - the spiral that is not a spiral. This image is of another strange galaxy. It is NGC 3077, thought to be an elliptical, but classed by some as an Irregular. At first glance it looks like a typical elliptical galaxy, but look again. There are dust lanes and tendrils in it very similar to the ones seen in M82. Conventional wisdom tells us that Elliptical Galaxies have no dust or gases, and are simply large oval clusters of stars. The accepted knowledge says this galaxy should not have these dust lanes, or whatever they are. However, we do not make the rules. Here is an elliptical which apperantly breaks our preconcieved notions of these objects.

My image does not do it justice. I had some problems with the bright star flaring on the main lens of my scope, and making a big ugly smear or two right above the galaxy. I took this image with my ST7 and 6 inch sct. It is 9 thirteen minute images median stacked and deconvolved.

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.

Sunday, January 18, 2009

M81 with the ST7

Continuing my current fixation on Ursa Major, I re-shot M81 again, this time using mt C6 sct and ST7 CCD. This image is 14 ten minute images median stacked and deconvolved, all shot at F6.3.

Saturday, January 17, 2009

A Deeper View of Messier 82

This image is 1 hour and 48 minutes of eight minute exposures with the Orion CCD and my 8 inch newt. A lot deeper than I normally go, but worth it. The strange Hydrogen tendrils are clearly visible in pink, along with the strange edge on spiral-like galactic form that makes up the main part of M82. A very interesting object, which no one quite seems to know what is going on with it. It seems to be the result of a collision or massive explosion, and the core seems to be ejecting massive amounts of synchrotron radiation in the pinkish hydrogen tendrils.