[AZ-Observing] Re: TouCams Available
- From: "Randy Peterson" <rgpeterson@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Wed, 24 Sep 2003 17:58:28 -0700
Just as a matter of interest, I was messing with my ToUcam Pro last week, to
see if I could get Neptune to show up on my monitor. The answer is just
barely. The contrast on the monitor had to be turned up very high, so that
the screen looked like an old TV, not tuned to any station, just snow, with
a little dot in the middle. Not really imaging, but it was there.
Randy Peterson
----- Original Message -----
From: "Tom Polakis" <tpolakis@xxxxxxx>
To: <"Reply-To:az-observing"@freelists.org>
Sent: Wednesday, September 24, 2003 11:54 AM
Subject: [AZ-Observing] Re: TouCams Available
> Light sensitivity is extremely important for Webcam planetary imaging.
> With my 740 model, I can get away with 1/25 sec. exposures on Jupiter
> with the gain turned only about one-tenth of the way up. That means I
> can get 1000 images to use for stacking in about a minute. The detail on
> Jupiter begins to smear due to its rotation in only a couple minutes. So
> if you have a less sensitive camera, you get either fewer frames to stack
> or noisier frames, due to dialing up the gain.
>
> The smaller chip doesn't sound too detrimental: even at 0.2 arcsec per
> pixel, Jupiter is less than 250 pixels across, which would fit on that
> smaller chip.
>
> At the risk of bringing up the touchy subject of what's on topic for AZ-
> Observing, I think what I just wrote above is on the fringe. There are
> plenty of imaging groups. If somebody tells me to stop, I'll stop.
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