Quote:
Originally Posted by Trido
I am curious, why would stacking images of such faint objects give you a better overall image? I can understand that noise from high ISO can be somewhat negated, but are there other advantages to stacking standard wide angle night shots? I have a camera that I have used for some night sky photography away from a scope and they come out fine, but the light pollution and short shutter time makes for underwhelming looking images. I never thought to stack them though. Intriguing idea.
*EDIT* Faint spelling error correction.  |
Trido, stacking can bring out the faint objects and the noise can be reduced almost to nothing if you take enough images. It allows you to stretch the image as people say to bring out the faint stuff without the noise overwhelming everything.
Ingrid, I have been using the same camera. I have used the D5100, If you can't see clearly to focus using the magnified live view, switch to manual focus, do the best you can, then take a short image (a few seconds exposure), zoom in on the image to check the focus. Then adjust the focus a *tiny* amount and take another image. See if it is better or worse focus. Keep doing this and within a few minutes and a few photos later and you will have nice sharp focus, and can take pictures all night
I find with that lens you need to set it to infinity and then wind it back a tiny bit to achieve focus.
It is well worth trying.