Quote:
Originally Posted by OneOfOne
Given that the orbital period around AB is of the order of millions of years (?), I expect would that mean Alpha would have moved by the same amount. So a similar time lapse of this system would show the proper motion, as well as a little orbital motion....you didn't happen to take similar shots of Promima's big brother and sister? I expect also the two are too far apart to be shown in the same field and be able to show the proper motion. 
Very mind blowing sequence, not many deep space objects move over a persons lifetime, let alone a few years. |
No I didn't take images of alphacent. It is much too bright. The exposures were all about 20 secs. Alpha cent takes an exposure of 0.1 sec and then background stars can't be seen to measure against.