Rosette in HaPosted By Jim Thommes |
Wow, this really came out great - congrats!
Posts Made By: Jim Thommes
November 22, 2005 05:01 AM
Forum:
CCD Imaging and Processing/Deep Sky
November 26, 2005 11:37 PM
Forum:
CCD Imaging and Processing/Deep Sky
M78 from UtahPosted By Jim Thommes |
Tyler, really nice image - good job on the rework.
November 26, 2005 11:39 PM
Forum:
CCD Imaging and Processing/Deep Sky
M78 -- A new look at an old favoritePosted By Jim Thommes |
Tom, Really nice - I love the subtle colors.
November 29, 2005 04:50 AM
Forum:
CCD Imaging and Processing/Deep Sky
meade focal reducer 0.63 in a f5 newtPosted By Jim Thommes |
Andre,
Hard to say. The first challenge is can you bring the image to focus. If not, you can try to reduce the distance from the camera to reducer. Reduction factor will go up (0.63 to 0.7 or 0.75), but if that's what you need to focus then that's what you need to do.
Second issue is the correction reacting to the Newt. There might be color issues or star bloating. The resulting f/3 or so my not be very flat and the edges won't be in focus when the center is - or you can get coma at the edges.
You can try it with a critical eye to these issues. If it's not good you could probably get some of your money back in the classifieds here on Astromart.
Hard to say. The first challenge is can you bring the image to focus. If not, you can try to reduce the distance from the camera to reducer. Reduction factor will go up (0.63 to 0.7 or 0.75), but if that's what you need to focus then that's what you need to do.
Second issue is the correction reacting to the Newt. There might be color issues or star bloating. The resulting f/3 or so my not be very flat and the edges won't be in focus when the center is - or you can get coma at the edges.
You can try it with a critical eye to these issues. If it's not good you could probably get some of your money back in the classifieds here on Astromart.
November 29, 2005 04:52 AM
Forum:
CCD Imaging and Processing/Deep Sky
Flaming Star HA-RGBPosted By Jim Thommes |
Thanks guys for the comments.
Vince, I didn't think there was any blue in the object either until I saw it.
Vince, I didn't think there was any blue in the object either until I saw it.
November 30, 2005 04:57 AM
Forum:
CCD Imaging and Processing/Deep Sky
Shameless self promotion!Posted By Jim Thommes |
Nice site. It must be really new? At first my DNS server did not resolve the URL, but it came up the second time.
I really like your "observatory" concept. Like you, I travel to my observing sites - I don't range quite as far as you do though. I, however, am getting tired of sleeping in the back of my truck.
I really like your "observatory" concept. Like you, I travel to my observing sites - I don't range quite as far as you do though. I, however, am getting tired of sleeping in the back of my truck.
December 2, 2005 04:29 AM
Forum:
CCD Imaging and Processing/Deep Sky
Disaster Recovery - Rosette in H-alphaPosted By Jim Thommes |
Jose,
It is a great image - nicely done.
I have to say that I am a slave to my telescope - I remain in attendance while it is gathering data. Another reason why I go shorter than I should.
It is a great image - nicely done.
I have to say that I am a slave to my telescope - I remain in attendance while it is gathering data. Another reason why I go shorter than I should.
December 5, 2005 01:02 AM
Forum:
CCD Imaging and Processing/Deep Sky
IC 410 HaRGBPosted By Jim Thommes |
Thanks guys for the comments on this image. As you can see, I do save my old images in an archive. I know some of the oldimages can be, well, somewhat spotty. But heck, its always fun to look back.
Tim, Improvement in these three images I guess is part equipment and part experience and a lot of learning on forums like this. I think a big part is equipment though - moving to a 16 bit higher resolution camera was a big step up for me.
Dan, I tend to shoot a lot of stuff at faster focal ratios and as you know, they are not too forgiving. This particular set up is all threaded couplings. But as you pointed out, something is not quite square. I haven't seen anything obviously amiss and I am relectant to start tearing camera's and optics apart just yet to isolate any issues. Could be just plain old flexure in the train.
Tim, Improvement in these three images I guess is part equipment and part experience and a lot of learning on forums like this. I think a big part is equipment though - moving to a 16 bit higher resolution camera was a big step up for me.
Dan, I tend to shoot a lot of stuff at faster focal ratios and as you know, they are not too forgiving. This particular set up is all threaded couplings. But as you pointed out, something is not quite square. I haven't seen anything obviously amiss and I am relectant to start tearing camera's and optics apart just yet to isolate any issues. Could be just plain old flexure in the train.
December 12, 2005 12:19 AM
Forum:
CCD Imaging and Processing/Deep Sky
Horsehead and FlamePosted By Jim Thommes |
Vince,
I like the shot a lot. Nice color, nice Horsehead. I guess the ST-200XM anti-blooming works good for you. Imagine the processing you would have gone through with an ST10.
I believe I too am struggling with some glass interface reflections. I think I'm going to go through a range of trial shots to see which glass causes the most problem - it will be interesting to see.
I like the shot a lot. Nice color, nice Horsehead. I guess the ST-200XM anti-blooming works good for you. Imagine the processing you would have gone through with an ST10.
I believe I too am struggling with some glass interface reflections. I think I'm going to go through a range of trial shots to see which glass causes the most problem - it will be interesting to see.
December 13, 2005 05:49 PM
Forum:
CCD Imaging and Processing/Deep Sky
Galaxy - IC 342Posted By Jim Thommes |
Thanks guys for the comments.
Jeff, Yeah, I know what you mean about the noise reduction. Even when you tell yourself you don't want to overdo it, it is amazing how you sometimes end up doing too much anyway.
Jeff, Yeah, I know what you mean about the noise reduction. Even when you tell yourself you don't want to overdo it, it is amazing how you sometimes end up doing too much anyway.
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