Astromart

April 6, 2010 03:49 AM Forum: CCD Imaging and Processing/Deep Sky

Herschels Ray

Nice Greg. I like the one with the Ha data best.

April 7, 2010 03:31 AM Forum: CCD Imaging and Processing/Deep Sky

NGC 3628 Close-up and Wide Field

Thanks for the comments folks...

Tyler,
Its the viewfinder mirror that flips up that has the mass (and thus the potential to vibrate the system). The Canon cameras have a mirror lock-up feature where the mirror is actuated with the first bulb trigger and the exposure is started/timed with the second trigger. The DSLR Focus software I use allows me to program a delay between "mirror up" and the start of the image. I usually set it to two seconds. But to tell the truth, I don't see any wiggling at all in the guide star or disturbances in the guiding graph from the mirror actuation. (forgive the somewhat wordy response on a slightly off topic subject.)

April 7, 2010 03:42 AM Forum: CCD Imaging and Processing/Deep Sky

NGC4565 with QSI583 camera

Posted By Jim Thommes

Roland, Gilles
That is a mighty nice image! Its really hard to see the evidence of the poor seeing. I realize the image is downsampled a bit, but the smallest stars in the image seem to have a 1-1.5 fwhm. Did you compensate with a bit of a minimum filter?

April 14, 2010 03:16 AM Forum: CCD Imaging and Processing/Deep Sky

First galaxy this season.

Posted By Jim Thommes

Nice one Charlie.

April 14, 2010 03:20 AM Forum: CCD Imaging and Processing/Deep Sky

the Whale

Posted By Jim Thommes

Nicely done Mike. I like the results you are getting from your set up.

April 30, 2010 02:41 AM Forum: CCD Imaging and Processing/Deep Sky

M17

Posted By Jim Thommes

Looks pretty nice Charlie - and you have a nice early season start on this object. On the color balance, I would trust your calibration factors before I did an auto-color.

Jim

April 30, 2010 02:43 AM Forum: CCD Imaging and Processing/Deep Sky