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. Damn 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.