convert current.png +distort DePolar 0 current-pan.png

Nov14
by kevin on November 14, 2014 at 15:19 and modified on November 26, 2014. at 14:04
Posted In: astronomy, tech
Depolar

Depolar Allsky1

 current

Ever since I saw a sample of an allsky (or ultrawideangle) image being turned into a 360 deg panorama, I have known it was possible but did not know the process in getting it done.

Part of the issue is to ask the right question. Once the keyword “polar” came along, the rest was easy.

So to get the above Allsky1 camera image from a circular to a rectangular image, we use the following command in the ImageMagick suite of programs for linux:

convert current.png +distort DePolar 0 current-pan.png

That’s it!

Let try it out on the Allsky2 image:

Depolar Allsky2

Depolar Allsky2

 ev_summary (1)

And it works there as well. Excellent!