Astromart

February 28, 2004 02:04 AM Forum: Birding Optics and Photos

What is it?

Posted By Jeff Hapeman

Jim is right, it's a male cardinal, likely with a mite infection that has caused it to lose it's head feathers.

Jeff

March 12, 2004 02:30 AM Forum: Birding Optics and Photos

Robin

Posted By Jeff Hapeman

Lovely shot! Robins are truly beautiful birds--if they were rare, we would rave about them.

Jeff

April 8, 2004 04:11 AM Forum: CCD Imaging and Processing/Solar System

I have had plenty of luck using my D100 for evening photography of aurorae, wide-field star shots, etc. You either need to create your own dark frame and subtract it from your images, or use the auto-dark subtraction method (which will essentially double the exposure time). Under dark skies, it really shines. I am including links to some of my photos, including an animated GIF of the Milky Way rising over Kitt Peak.

http://www.noao.edu/outreach/aop/observers/milkyway.html
http://www.pbase.com/image/25427693
http://www.pbase.com/image/24780892
http://www.pbase.com/image/24780882
http://www.pbase.com/jhapeman/aurora

In the Orion shot, I got down to 8th magnitude stars in only 30s and with a nearly full moon just setting. I haven't checked the Kitt Peak image, but I would bet those stars go to at least 9th magnitude if not 10th, and those are also only 30s exposures. Dark skies help a lot.

Jeff

April 10, 2004 03:17 AM Forum: Birding Optics and Photos