I think I'm starting to get the hang of this. I used some Gaussian blur to get rid of some noise on the dim edges of the nebula, and the HDR functions in photoshop does some nice work on the colors. I do notice some chromatic aberration occurring with this low end camera lens.
I also photographed the area around Alintak, and was able to capture the Flame Nebula, and I did capture the horsehead. Neither came out well, but I do know now that its possible with the unmodified camera. Trouble is, processing that image is proving to be rather difficult, being I didnt get enough good frames to make them bright enough, so theyre quite noisy. I only was able to use 6 - 90 second frames, as it was getting breezy out, and many of the frames I had taken were blurry.
Actually, this didnt come out too bad, considering I used only 6 frames. if you look closely, you can see a hint of the Horsehead below the bright star. The red nebulosity is beginning to show up, but it is quite dim. Remember also, this was taken durring a gibbous moon. There isnt any detail whatsoever in the horsehead, as the area is about 50% noise. Longer imaging time should produce an image. This is a smaller nebula than I expected also, so I may not be able to get a good image of this until I figure out how I'm going to achieve focus with the Canon on the telescope. I will probably have to cut the tube and move the mirror forward.
2 comments:
Do you stop down the camera lens? That might help clean up some of that chromatic aberration, at the cost of longer exposures. I picked up a used Rebel XT I plan to use on the telescope, once I pry that pesky IR cut filter out of it.
No... I havent, but that is a good idea to try.
I'm running my camera unmodified. I'm still able to get emission nebulae. I was able to capture the Horsehead on 1/10, but it was real low and washed out be city lights, then when it got high enough, the moon got it. It is definately there though. It does a nice job on the Flame nebula, however....
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