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rolandlinda3
Carpal Tunnel
   
Reged: 01/24/06
Posts: 1630
Loc: Crozet VA 22932
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Request for Pics of Video on Short Integration
07/23/08 02:29 PM
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Folks, I am doing a set of experiments in the next 2 weeks where I pick a three objects and look at the video output from a NON-TRACKING telescope--where settings are set on short integration times but a little higher gain. The results will help guide us when we take an older MallinCAM to Africa and use it on an 80-mm refractor on an alt-az tripod mount, but the same results will also answser questions that periodically come up on this forum when people ask what they can do without a tracking system when using a decent astro video camera.
If you would consider participating, I would like to see some pictures posted when the cameras are mounted on low f ratio scopes and/or scopes using focal reduction...especially those that are not the BIG ones and whose apertures are 3.5 inches to 8 inches or so -- sizes that are popular with entry/novice level observers....using camera settings at 128x (2.1 seconds), 64x (1/2 that time), and 32x (1/4 that time). I will need people to list the gain they are using as a rounded percentage of max scale, and which camera (typically STELLACAM or MALLINCAM). If I may be so bold and to introduce some common objects that are pretty easy to get in the sky and that most people can recognize or compare from, I would like to use: M27, M8, and M92 but don't mind if other things are posted. Remember to keep the posted stuff from getting too big in terms of file size.
I sketch things and do not have a capture device, so my results will be either sketches or description.
If you care to participate, I need the following if you post some files:
The object or target. Your scope size/type. Video camera type and "time"/integration setting: 128x, 64x, or 32x AGC or gain: rounded percentage of max scale Any comment.
The moon is fading from sight now so the next two weeks is a good time to do this.
Thanks for reading and participating if you choose.
Roland
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