Showing posts with label galaxy. Show all posts
Showing posts with label galaxy. Show all posts

Saturday, February 20, 2010

NGC 2903 - Dusty Barred Spiral

 
NGC 2903 is one of the brighter galaxies found in the late Winter/ early Spring and heralds the arrival of galaxy hunting season. It is a dusty spiral with a prominent bar. You can see it prominently in a scope 4" in diameter and up. 

This is a composite of 13 thirteen minute images shot with my ST7 using a .63 reducer on my 6" schmidt-cassegrain.


Tuesday, April 21, 2009

M63 Sunflower Galaxy

Here's another image I need to shoot color for. It is M63, the Sunflower Galaxy. There is a strange line in this image that appears to run through the nucleus from edge to edge. I am not sure if it is a processing artifact or a real feature of the galaxy. I will have to research it.

CCD: SBIG ST7
Scope: Celestron C6S SCT
Mount LXD 75
Reducer: .63
Luminance: 8 thirteen minute images

Monday, March 30, 2009

Project: M106


I am waiting for the weather to clear so I can shoot some color for this galaxy. This is M106, near Ursa Major. It is a large and very violent spiral galaxy said to harbor a Black Hole in the core.

Shame I cut off the small galaxy next to it. I will have to redo the image, I guess.

Scope: Celestron C6S w/ .63 reducer
Mount LXD75
CCD: ST7
Filters: UV/IR block
L: 15 thirteen minute images

Wednesday, March 25, 2009

NGC 2681 - maybe?


I thought I was imaging the relatively obscure, NGC 2681 when I shot this. After comparing it to other shots of NGC 2681, I am not so sure what it is.

It is a spiral galaxy, but it is definitely not NGC 2681.

This sort of thing happens occasionally, since imaging these tiny galaxies is a lot like taking a picture of a grain of sand on a beach a mile away.

Monday, March 2, 2009

M108 - Now in Color!


Here is my earlier image of M108 colored with CMY coloring.

C = 5 images @ 13mins 2x2 binned
M = 5 images @ 13mins 2x2 binned
Y = 1 image @ 13mins 2x2 binned (What can I say? clouds moved in.)

Thursday, February 26, 2009

Messier 108


I shot this Luminance Image of M108 two nights ago. I need to shoot some color for it. M108 is a spiral galaxy seen along its edge.

Telescope: Celestron C6S
F 6.3
SBIG ST7 CCD / UV-IR filter
12 thirteen minute images.

Sunday, December 28, 2008

2 hours and 40 minutes of the Deer Lick

Just for comparisons sake, I am posting the final results of nearly 2 hours and 40 minutes of integrated imaging time. It is a composite of all the images I have gotten of it so far with the SBIG. I added about 8 ten minute subs from tonight. The arms are still a little fuzzy, but the galaxy is starting to really stand out. Can't hardly tell it was shot through a 6 inch scope, and not something bigger.

Wednesday, December 24, 2008

56 Minutes More Minutes of The Deer Lick Group


As another test of my new CCD camera. I turned it once again to NGC 7331. This galaxy is proving to be a very tough target. I shot 8 six minute integrations and added it to what I shot the other night for a total of 56 minutes. All through the SC6 at F6.3 using the SBIG ST7. The core turned out OK, but the arms are still really faint. It needs a lot more integration time. I guess I will have to try again.

Saturday, December 20, 2008

M77 with the 6 inch scope

Here is an image of Messier 77, a strange galaxy with an Active Galactic Nucleus. It is basically considered my most astronomers to be a sort of mini-quasar. It is suspected that it's nucleus contains a very large and active black hole.

I took this image with my Orion DSCI. It is a composite of 17 two minute images, shot guided through my 6" sct at F6.3.

Another Look at the Deer Lick


I took another image of NGC 7331, the Deer Lick Galaxy. I used my Canon DSLR and the little 6" sct. It could use some more integration time, but I got the main part of it. This image was shot guided, and is a composite of about 8 five minute integrations at ISO 1600.

There seems to be some vignetting in the small image that does not show so bad in the full sized image. The SC6 seems to be a bit harder to image with using a DSLR than I care for. I may not use it much for this anymore. Vignetting and spherical errors seem to be the main issues.

Thursday, November 6, 2008

More Fun with the New Scope

It is really cold up here in the mountains, like about 14 degrees, so I tried to do a quick imaging session. I am still working the bugs out of my new C6 sct scope, so I picked a few easy targets. I picked M27, because it makes a good target to judge against other scopes, and the galaxy NGC 253, basically because it was there and I was freezing. Both of these shots are done with my Orion DSCI 1 and were guided with my ST80. The guiding was not perfect, because numb fingers don't like to play with guider settings.

The M27 image is about 1 hour worth of composite images. The NGC 253 Image is about 15 minutes worth.
NGC 253 is an interesting object. It is called the "Silver Coin Galaxy" because it looks like a coin on it's side. It is quite large and bright, and can be spotted in binoculars, or if you are really good, youe naked eyeballs. It is found low on the southern sky this time of year. It is amazing that Charles Messier did not discover it back in the 1700-1800's. It is really hard to miss. It was actually discovered much later, around the turn of the century if I remember correctly.