Ballard wrote:
The smoke finally cleared off enough to give me a chance to try out my new mono-astro camera. This image of the Andromeda galaxy was made by stacking groups of shots taken with a Luminance, Red, Green and Blue filter. These groups where then combined to produce a full color image. Due to the large size of Andromeda I used a 500mm Canon lens rather than a standard telescope. I also used a homemade adapter to attach the filter wheel and astro-camera to the Canon lens. Many of the subframes had satellites go through while the exposures were being taken, fortunately it is fairly easy to filter out most of the satellite trails (I did end up doing a small amount of cleaning with a clone tool).
The first image is the end result, in download and double download you can see the darker dust lanes in the galaxy and several of its bright blue star clusters. This image required ~6 hours of total exposure.
The next image is same except I went though and circled a number of dim galaxies in background (probably most of these are many 100's of millions of light years away). The red circle shows where I believe I found 1 dim galaxy and the yellow circle is where two or more distant galaxies showed up. This was just a cursory examination and there are certainly many more that could be found. A few of the circles also have PGC numbers of the galaxies in the circles (only a few of them showed up in my charts). You will probably need to use a the double down load to pick out these dim galaxies.
The last images is one of the subframes that shows one of the pesky satellite trails.
All questions, comments and suggestions are welcome.
The smoke finally cleared off enough to give me a ... (
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Amazing images. Very well done!!!