Quote:
Originally Posted by Merlin66
Terry,
Good results first time out....now you appreciate the issues of guiding on a slit!! 
Looking at the spectrum...
Alp Pavo is a B2IVc binary; nothing in ELODIE
Kaler "Stars and their Spectra" has a nice comparison spectrum of Gam Ori (B2 III) on p188.
The main lines (besides H) are He I at 4009/4026/4144/4387/4471/4687
and
SiII at 4129
MgII at 4481
You should record the micrometer setting and use this to "re-set" the grating back to this region the next time you image.
The spectrum is noisy, but OK for a single exposure (what duration?) when you stack a few more you'll get a major improvement. John S. is achieving snr>100 with the pre-production Spectra-L200.
Onward and upward.
Well done.
Ken |
It was a single 60sec exposure. Looking at your numbers there are certainly He 1 lines at 4026, 4387 amd 4470 visible.
Not sure about others though.