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Old 29-01-2008, 09:55 AM
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DaveM
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Join Date: Sep 2006
Location: Perth, Australia
Posts: 176
Hi Mike,
Looking at the .avi in detail, I'm not quite sure I understand what's going on. It says there are 1769 frames, but when I step through them every group of 10 frames is an identical image. I had set the exposure time on the capture software to be fairly long so I could see the prominences, and the frame rate was 30 fps. I suppose that the frame rate was too fast for the exposure time, which I now guess must have been 1/3 of a second. I'll have to invesigate this a bit more, as I'm not sure how the exposure setting affects things. The software says it stacked 62 frames (i just did an automatic processing), but maybe this only means there were 6 different images being stacked.

To improve the setup in general I need to get my mount polar aligned as well as possible so that I can capture more data before things drift. Also, I noticed that in the summer sun the mount and maybe even the scope itself are getting hot and presumably setting up air currents, which doesn't help the seeing. I think it will pay to set up quickly in the morning and capture data quickly before things heat up. I guess that is a bit different to nighttime imaging where it pays to let everything sit around for a while to equilibrate.

I did use the Rad Video tools software to convert the files with the wrong codec, but as you mentioned Mike the resolution of the file is wrong (360x240 rather than 640x480).
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