Watec spectroscopy

[cugsy]

Hello geniuses. I'm considering trying to record planetary neb images with the watec (actually I've been doing that on and off for ages) but this time I would like to record spectra. I imagine that mono is inherently more sensitive but is the actual spectra still as useable as a colour one? I do wonder if if its possible anyway when the magnitude of the average pn is over 8 -9. I'm not sure how to do it - diffraction grating or spend the dosh on the staranalyser. 'keep it simple stupid'...etc  Its going on the lx90 8".  Any advice folks welcome folks.  John

[Merlin66]

We don't actaully use color in the spectrum!!
A sensitive B&W is much better! Some of the guys in Oz they are using DMK21's very successfully.
I'd recommend the Star Analyser as a very good starting point. This can easily record the spectrum of a 9 or 10 mag star.
Easy to use, and easy to calibrate. You need to download Vspec a freeware program to analyse your spectrum.