Hot Pixels

[Simoli]

Couple of questions here on hot pixels.

1) Do they damage the sensor permanently? I did my first long exposure last week and noticed there were lots (tons) of hotties. It was a 45 minute exposure.

2) How do you get rid of them in the photo? I have seen a couple of references now on cloning them out. Surely people aren't cloning each individual hot pixel out.

I have PH CS3, if it matters.

[le_R]

To clean hot pixel you must do a dark frame (several totally dark frame taken with the same parameter of you original shoot). You can generate this dark, which is the map of the thermal noise and hot pixel of your sensor, by using deep sky stacker or iris for example, see http://photography-on-the.net/forum/showthread.php?t=574289

And the only thing to do is to substract this dark frame to you shot. RAW processing is necessary to get better results.

Hotpixels are permanent i guess. I always have the same hotpixels on my dark frames.