Atik Flatfield

12:30 1/3/2009 UTC

I did a flat field image to see how the chip is illuminated by my telescope system and if the camera has any dust in it. Unfortunately I found that there are several dust motes sourcing from the inside of the CCD chamber. Few is in the inside of the window, but the worst (most black spots) are on top of the sensor it self. These are impossible to remove by myself. I had several similar dust specs in my DSLR chip, but I really did not expect them in sealed CCD chamber. 16x1sec @0°C darks applied.