jgs001
Brian Cox
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I'm not sure this is the best place for this, but here it is for now at least 
, sorry if it is in the wrong place.
As I promised on a couple of threads, I've managed to post up the video that I used to stack and process into (I rotated the end result to get the correct way up view, that you would normally see, the scope with mirror diagonal inverts it).
The video clearly shows the adverse effects of atmospheric seeing and is seen as the wobbling. It was shot at 1200mm with a webcam, crop factor 8.5, so a 35mm EQFL of 10200mm. Whilst it becomes very apparent using this sort of magnification, the effects are still there when shooting the sky and the moon. They are less apparent the shorter the focal length. This will have a dramatic effect on the IQ of single images. Thus the webcam, shooting at 10 fps and merging the best frames into a single image, in the above case it's 400 of 600 frames. Dedicated astro cameras (like the DMK) are able to crank out 60 fps and this helps even more (man I'd love one of those... more expensive toys on the shopping list)
[YOUTUBE]<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/OKvJWhVRmM0&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/OKvJWhVRmM0&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/YOUTUBE]
I hope this helps explain what I've meant on various moon posts about the atmospheric conditions affecting the quality of moon shots.
, sorry if it is in the wrong place. As I promised on a couple of threads, I've managed to post up the video that I used to stack and process into (I rotated the end result to get the correct way up view, that you would normally see, the scope with mirror diagonal inverts it).
The video clearly shows the adverse effects of atmospheric seeing and is seen as the wobbling. It was shot at 1200mm with a webcam, crop factor 8.5, so a 35mm EQFL of 10200mm. Whilst it becomes very apparent using this sort of magnification, the effects are still there when shooting the sky and the moon. They are less apparent the shorter the focal length. This will have a dramatic effect on the IQ of single images. Thus the webcam, shooting at 10 fps and merging the best frames into a single image, in the above case it's 400 of 600 frames. Dedicated astro cameras (like the DMK) are able to crank out 60 fps and this helps even more (man I'd love one of those... more expensive toys on the shopping list
)[YOUTUBE]<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/OKvJWhVRmM0&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/OKvJWhVRmM0&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/YOUTUBE]
I hope this helps explain what I've meant on various moon posts about the atmospheric conditions affecting the quality of moon shots.
