(meteorobs) Perseid videos / with forward scatter

[stange]

Chris & Thomas point out the very reason besides sensitivity, why I run the 
Handyavi system at the same time from the Sentinel camera in common mode. 
Nothing gets missed that has some light & motion. Even faint Iridium flares 
& satellite flashes without apparent motion are captured.....and of course 
every bird, plane, and bug. /-(

YCS


----- Original Message ----- 
From: "Chris Peterson" <clp at alumni.caltech.edu>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2008/08/17 08:12
Subject: Re: (meteorobs) Perseid videos / with forward scatter


> Ouch, 20 seconds? Fortunately, my system has almost no dead time after a
> capture- just a few video frames. The only time I miss recording an event 
> is
> when it happens while another is still in process. I still may catch a
> composite video frame, but no other data.
>
> Chris
>
> *****************************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
>
> ----- Original Message ----- 
> From: "Thomas Ashcraft" <ashcraft at heliotown.com>
> To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
> Sent: Sunday, August 17, 2008 9:04 AM
> Subject: Re: (meteorobs) Perseid videos / with forward scatter
>
>
>> Hi Chris,
>>
>> Yes, this is limitation of the meteor capture systems that trigger on
>> flashes of light.  While the trigger system is processing a meteor
>> capture then it will miss any meteors that occur until the system
>> completes its file processing and resets. In my system the capture and
>> file process might take 20 seconds or so before it is ready for the next
>> meteor.
>>
>> I have expanded my own system further by splitting the analog video
>> camera signal stream output using a video distribution amp ( Radio Shack
>> - $50.) and sending one feed into the trigger/capture system and then
>> another feed into and through a Canopus ADVC110 analog to DV converter
>> which converts the camera signal into a DV (digital video) stream and
>> then feeds into an iMac via firewire and is there recorded into iMovie
>> version 6 software full time at 30 frames per second. Also in my case,
>> since I am radio astronomy oriented,  two separate channels of forward
>> scatter radio reception also feed simultaneously through the Canopus
>> ADVC110 making one movie with two channels of sound.   One hour of DV is
>> about 12 GB of file space.  I invested in a 750 GB hard drive to
>> facilitate my all night observations. This means that I can hold
>> recordings for two days before dumping to make room for fresh
>> recordings.  Each day I extract the meteor specimens and make short
>> movies and dump the bulk of the hard drive file.
>>
>> It is a moderate amount of work but kind of interesting in its way.
>>
>> Clear skies,
>> Thomas
>
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