Quote:
Originally Posted by Merlin66
Al,
You're correct, the prism just brings the spectrum back towards the centre of the the field, but it does make things easier to image.
Getting calibration without the zero order is good practise for your next project! I'm sure some of us will migrate towards a slit spectroscope.
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Yep. I can practice that now
... It's just a matter of becoming more familiar with what lines are what, and what to expect in each different spectral class. Ultimately, more resolution/purity will make the job easier as fainter lines should become detectible. ATM I have some spectra of the B class stars in Orion that I can't resolve a line in
... no doubt there is some detail there if I had adequate resolution and purity.
I'm still half tempted to seek out a Meade f/3.3 reducer. Theoretically that should get the Raleigh Criteria for my scope down to about 1.6 pixels which will help again with line resolution.
Al.