Mall Astrophotography
home gallery equipment shoot process links

September 18, 1999

Prime focus images:

jupiter
15 frames averaged of Jupiter

saturn
10 frames averaged of Saturn

Things have been working pretty well. I've come up with an algorithm that uses the RMS difference between a pixel and its neighbors as a way to determine the overall sharpness of an image. Now I can take 50 or more images and sort them by sharpness without having to do it manually. Also, I am using a script that I wrote in MatchCad to find the centroid of the images and then crop them so that the planets are centered. After that, it's an easy task to just read in a bunch of images and average them. The output image then goes to PhotoShop for color and level adjustment and some unsharp masking.

In addition, I took some images of Jupiter using the 2x barlow. Messed around with processing it, but didn't get much.


Weeks later, reprocessing the images from this day yields:

jupiter
Prime focus. 40 frames averaged.

saturn
Prime focus. 40 frames averaged.

jupiter 2x
2x barlow. 40 frames averaged.


Website © 1999-2000 Emm Graphics