Posted by Mike Harlow at 14:50 on 2014 Jan 27
I made my first attempt at a supernova spectrum last night but using an objective prism. Reasonable result but it’s just about at the limit of what I can do with my current set up. The spectrum is on the Forum of the Orwell Astronomical Society at:http://forum.oasi.org.uk/viewforum.php?f=6.Sorry that I’ve got red to the left in my image against the usual convention. But then prisms do disperse in the opposite direction to gratings(!).Mike.