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Wed, Aug. 10th, 2016, 10:51 pm
Simulation Output

It’s come up more than once: how big a patch of sky is that long-exposure astrophoto showing? I just realized that I have the tool needed to answer that: Stellarium, available free for Mac, Windows and Linux.

In all of the following screenshots, the red rectangle is (if the dimensions I found on the net are correct) the view that a Micro Four Thirds camera (a mirrorless standard used by Panasonic and Olympus) would get through a telescope with a focal length of 1250mm. I only entered the dimensions once, so even if I got it wrong, it’s still consistent.

The Moon:
Moon.png

M31 (the Andromeda Galaxy):
Andromeda.png

M42 (the Orion Nebula):
Orion Nebula.png

Earth, as seen from the Apollo 11 site (yes, if the scope and camera worked in vacuum, get off my back):
Earth from the Moon.png
(Deleted comment)

Fri, Aug. 12th, 2016 02:08 am (UTC)
fuzzy_geff

That’s part of the reason I linked to their site. They have binaries for the current Ubuntu versions, Windows 7 and above, OS X 10.8.5 and above. And, of course, source for anybody in the Unix world to try.

Hey, the package manager on Raspbian knows about Stellarium. I’m predicting horrible performance, but it’s there at all.

Fri, Aug. 12th, 2016 08:01 pm (UTC)
fuzzy_geff

Okay, that went about as well as I should have expected. Stellarium installs and launches under Raspbian, notices that the Raspberry Pi 2 Model B doesn’t have an OpenGL video card, and quits. At least it didn’t take much effort to find out...

Tue, Aug. 16th, 2016 03:18 pm (UTC)
softwarejanitor: Astronomy tools

Stellarium is cool, but my favorite astronomy programs are KStars and Cartes du Ciel. There is official MacOSX support in Cartes du Ciel. KStars can be installed on MacOSX, but it is more of a DIY project, although FINK might be of assistance.