Image of the day

Captured by
David Marks

Lightning in the desert

My Account

New to Astromart?

Register an account...

Need Help?

D60 North American Nebula

Started by mccarlp, 10/15/2002 01:21PM
Posted 10/15/2002 01:21PM Opening Post
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

Attached Image:

mccarlp's attachment for post 1947
Posted 10/16/2002 10:08AM #1
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"

Attached Image:

rwodaski's attachment for post 62990

Ron Wodaski
New Astronomy Press
Posted 10/18/2002 09:00PM #2
Correct me if I'm wrong, but minute field rotation between exposures can yield that look to off axis stars also.