Quote:
Originally Posted by renormalised
Here's a site some of you may not know, but it's a catalogue of spectra for stars of spectral classes O5 to M.... it's at Caltech...they're pretty old, but still useful....
An Atlas of Stellar Spectra
Should come in handy 
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Thanks for the link! I've bookmarked it.
Quote:
Originally Posted by Merlin66
Al,
Very interesting results!!
Looks like you're getting the hang of focussing and Vspec!!!
Your getting more practise than me at the moment.... been cloudy and raining since Xmas!
I set up a 50 micron artificial star (on the old Foucault tester) allows me to use the DuluxStar and Neon reference bulbs for "training"!!!!!
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I got plenty of practice learning how to do that again, Ken!

I might have fallen on my feet with Betelgeuse though. I had a go at the other Orion spectra today and of course they are all blue stars... I still seem to be suffering from a lack of blue response

. I'm using a different camera now (DMK rather than the ToUcam) and it persists... the library spectra don't seem anything like what I've captured...
I'm a bit doughy today after not much sleep so I'm letting it go till I'm thinking clearer.
Al.