I have one of those!!! COOL!
Posted 22 January 2013 - 08:44 PM
Posted 22 January 2013 - 09:33 PM
Posted 22 January 2013 - 11:50 PM
Man, wonder what research paper someone did to justify bringing "his" scope into space. I am drafting one now, would love to have my 6" MCT on that platform (looking into space, though.)
Posted 23 January 2013 - 09:23 AM
Posted 23 January 2013 - 10:11 AM
Posted 23 January 2013 - 07:27 PM
Posted 24 January 2013 - 12:07 PM
Posted 24 January 2013 - 10:24 PM
Interesting, they went with the 9.25 there is no commercial Fastar version. **** big obstruction. Woder if the custom trunion arms are for balance (no gravity) or to pull the mount closer to the window?
I think the custom trunion arms are to reduce the swing of the scope's front aperture. I would have gone a little closer to the front with the fork myself. It's a mighty small window!
Posted 25 January 2013 - 06:10 PM
Posted 25 January 2013 - 06:23 PM
Edit: I'm assuming the camera is for daylight imaging only.
Posted 25 January 2013 - 08:28 PM
Posted 27 January 2013 - 06:29 PM
Or perhaps the folks that put the system together know a lot more about precision optics and digital imaging of the earth than anyone around here.
Putting a scope up there in fastar mode might make sense under certain circumstances, but a 9.5 with a DSLR in front has a terribly large (and non-uniform) central obstruction. Considering the huge expense of launching anything into space you'd think they would have developed a more highly optimized system. There are plenty of CCD cameras that would have fit very nicely in front of that scope, but a DSLR does not. Alternatively a larger SCT or just a nice regular camera lens seemingly would have been a better choice.
And for all the folks questioning how the scope might get a suitable alignment and the use of GPS in orbit ... it's taking pictures of the earth, there's no need for a traditional stellar alignment.
Posted 27 January 2013 - 06:37 PM
On the other hand maybe it was just plain lousy to rig a DSLR like that and its killing contrast and light gathering power and there were any number of better choices.
There is that to consider too.