[sac-forum] Re: --[AZ-Observing]-- Re: Good Seeing Predicted for Tonight

  • From: <jimmy_ray@xxxxxxx>
  • To: sac-forum@xxxxxxxxxxxxx
  • Date: Thu, 7 Feb 2008 8:45:22 -0800

Hi Tom,

Very informative response. Chris now has three models one is a 1280 x 960 with 
a max rate of 15 FPS, all I think are non-IR filtered. I liked the USB set up 
and the price point on his smaller camera but passed them by as I wasn't sure 
what I'd be getting for the dollar but your results say that you'll be seeing 
one on the back of my rig soon. I was looking at the Orion filter wheel last 
night and they are now about $150. The filters in are all in the "Oh my gosh" 
category but really nothing more than I paid for good HA or OIII filters. The 
smaller chip should be fine for close up shot of Lunar details. 
One thing I'm curious about is that you were using a powermate for your 
planetary work, which you stated is what you use this camera for, should that 
also be on the "must have" list of accessories for this set up? I.E. - the 
powermate has to be on it for most applications. 
Thinking about it that setup may be perfect on a PST solar scope as most if not 
all CCD cameras / DSLRS won't work due to lack of inward(?) focus of the PST 
setup BUT if you 2X barlow a webcam you can bring it into focus but the 
resolution is not the greatest. (Barlowing the webcam is really neat in that 
for mine I thread the lens portion of my barlow off the rest of the eyepiece 
and directly thread it to the front of the webcam).

Jimmy Ray
---- Tom Polakis <tpolakis@xxxxxxx> wrote: 
> Jimmy,
> Fortunately the camera is easier to use than the model number is to remember: 
> DMK 21AU04.  They came out with USB2 last November, and that's when I bought 
> it.  Mine is 640x480 pixels.  I think Chris has the 1024x768 model, which 
> offers more coverage for subjects like the moon, but has a max frame rate of 
> 30 frames per second rather than 60.
> I have no interest in deep-sky imaging with a Webcam.  If I want to do that, 
> I'll get a CCD camera.  I'm sure there are ways to force it to do good long 
> exposures.
> The RGB filters are expensive.  I bought Astronomik fitlers per the consensus 
> on Cloudynights for ~$200.  Then you need a filter wheel, and I'm perfectly 
> satisfied with the manual one I bought from Orion for another $200.  Add the 
> camera, and the imaging setup costs about $800.  The reasons to spend all 
> that more coin over a ToUCam is that the high frame rates are not compressed 
> and it's a monocrhome, so you don't lose resolution due to the Bayer matrix.
> Tom
> ---- Jimmy Ray <jimmy_ray@xxxxxxx> wrote: 
> > Hi Tom,
> > 
> > My first response was "Wow!" which I followed up in my mind with the 
> > questions that Gene ask. Now I'm curious as to which model of their 
> > monochrome cameras do you have? Have you tried or is the camera capable of 
> > any good deep sky results (I'm guessing yes as max shutter is 60 minutes? 
> > Bottom line, do you like it? Have you looked at their color cameras? Etc, 
> > etc, etc...

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