makes sense. My inexperience led me to think that they were just moving too quickly to be caught in successive shots. Now that I've had your explanation and thought more about it I suppose that if that was the case they would be lines instead of points. Glad to hear that you've had a good night. Josh On Tue, Oct 18, 2011 at 1:41 AM, Patrick Wiggins <paw@wirelessbeehive.com> wrote:
Hi Josh,
On 18 Oct 2011, at 01:28, Josh wrote:
Great shot patrick!
Thanks.
It looks like there is some other movement in the shot. Any idea on what it was?
If you're looking at the same things I am they are called hot pixels. Basically defects in the image. I run my images through a program that removes most of them but it usually leaves a few behind. (BTW, in the days of film astrophotography we called things like that "Kodak stars" <g>).
The way to tell the difference between hot pixels and something real is the real objects will move evenly in a straight line though all of the images. Hot pixels tend to not be in all the images and tend to bounce around.
Cheers,
patrick
p.s. Very nice night tonight. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php