(meteorobs) Dark Subtracts with a typical allsky camera

[Wayne Watson]

The next trick would be to actually trigger the camera for N frames. Is 
there software that would do that? Maybe the fellow in AZ who sells 
astro software has a method? HandyAVI??

Hmmm, so I called him. He was getting a decent number of stars in some 
meteor videos on his web pages. 
<http://www.azcendant.com/HandyAviExamples5.html> Aug 13 video.

He's using a Watek Ultimate H2 camera, and a Computar 2.6mm all sky 
lens? I can find the first but not the second. Encouraging anyway.

On 10/5/2012 7:40 AM, Chris Peterson wrote:
> Assuming you disable the autogain and use a manual shutter setting, you
> should be able to simply make a stacked dark frame and use it for all
> your shots. You probably won't see much difference due to temperature,
> but if you operate the camera over a wide range, you can make two or
> three master darks- cold, temperate, and hot, for instance.
>
> Chris
>
> *******************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
> On 10/4/2012 9:59 PM, Wayne Watson wrote:
>> A bit of clarification.  What I'm after is eliminating the need to cover
>> the camera.  The camera should be able to close completely when taking
>> dark frames.
>> On 10/4/2012 6:13 PM, Wayne Watson wrote:
>>> I have a Rainbow L163VCS (has an iris) camera with a Sony HB-710EC
>>> allsky lens. If I want to do a dark subtract, I cover the lens with dark
>>> material, and take say 16 frames, which I then stack. I can do the same
>>> for an open dark sky. The purpose is of course to bring out faint stars,
>>> which one can use to get a sky mapped with RA/DEC coordinates. Are there
>>> modestly priced cameras and software that can do this instead?
>>>
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            Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

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