Since there are currently no commercial adapter solutions available to connect Canon lenses to Atik cameras and people frequently ask how I was able to connect my Atik 16HR to a Canon lens, I decicded to write a small how-to describing how I built an adapter for it and to discuss some of the problems on using Canon lenses for widefield astrophotography.
This tutorial describes my current workflow for processing L-RGB images with Iris and Photoshop.
--- work in progress, check back in a few days ---
Everything about hotpixels, thermal noise, readout noise, etc ...
(click on the image to start/stop the animation)
See that? Thats seeing. Seeing refers to the blurring and twinkling of images caused by turbulence in earths atmosphere.
The possibility of taking thermal-like images is another by-product of having removed the internal infrared filter from your DSLR.
This is an image of a soldering iron taken in complete darkness. During the exposure there was no visible glow.
(click on the image to start/stop the animation)
With a little (peltier) modification to your webcam, the noise of the cheap CCD can be significantly reduced. As a result, one can use much dimmer guidestars if the webcam is used as a guidecam.
The animation shows the noise of a modified Bresser PC ocular while cooling the chip down to -10°.
