Between my laptop dying
and the delivery and setup of my Skyshed POD
I haven't been playing with the Staranalyser or Visual Spec.
Finally, I've got back to it...
Attached are some of last night's results for Betelgeuse
. I captured spectra for most of the bright stars in Orion last night, but the Betegeuse one has the most distinctive lines, and I knew I had a sample file that came with VSpec for it, so its the obvious one to start with
. I planned to swing over to Eta Car after Orion, but by that time it was clouded out (cloud started affecting my capture of Saiph).
Capture was with the C8, DMK, Staranalyser, IC Capture. I played around for a long while practicing focussing on the spectrum (rather than the star). I didn't refocus between captures, but when the lines in Betelgeuse jumped out, I figured focus wasn't a problem.
I bought a new 1.25" nosepiece for the DMK and fitted a 7mm spacer ring as well to try to get the staranalyser further away from the camera. It would seem from this set of spectra on Betelgeuse I'm getting about 11.6 - 11.7 A / pixel.
Al.