D60 North American Nebula

Here is another refugee from my less than wonderful session last night. Let's just say I will be looking forward to the New Moon. At 3 minutes I was about 70% saturated with moonlight. At 5 minutes I was imaging a white sky.

Paul McCarl

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Nice work! Boy, these D60 images are really redefining what you can do with a digital camera.

This image has a green/blue central hot spot that was easy to remove using the gradient removal techniques from my book, as shown in the attached image. I simply selected the central portion of the image, and raised the black point of the green and blue channels simultaneously.

Ron Wodaski
author of "The New CCD Astronomy"
http://www.newastro.com

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Correct me if I'm wrong, but minute field rotation between exposures can yield that look to off axis stars also.