[sheeny (Al)]

Originally Posted by Barrykgerdes

If you want to experiment with star spectra there is an excellent program called spectra.exe, Google it. This program has the software to print a diffraction grate on clear film with a laser printer to place in front of your telescope while you take a shot of the star with your CCD. Read the manual that comes with it.

I found this program years ago (DOS era) but it is still available and runs at the command prompt or in a window. It is free!

Barry

Thanks Barry. I tracked it down in google, but the page failed to load... I'll try again later.

Originally Posted by Heian

Hi Al,
good to see another SA user on the IIS. I'll second Ken's comments about the Yahoo group run by Robin L. Lot's of info and very helpful.
Robin sent me a number of emails about calibrating instrument response which I can pass if you want them, but they are also on the yahoo group site if you can track them down.
My comments on it's use are also:
1. use b+w as Vspec works better with them.
2. you can also place the SA in front of a std 135mm lens on a canon 350 and get workable spectra after 4 - 6 secs. The attachment below is one of them, working at approx 2.5Ang / px resolution. In this case I also used a 2x teleconverter. Taken from suburban Wollongong, so not too bad

cheers
Mark

Thanks Mark. I've had a quick browse of the archives now that I'm subscribed to the Staranalyser list. Looks good.

I intend to have a play with with my camera, though it isn't modded so the IR response will be poor.

I'm toying with the idea of getting a Meade f/3.3 focal reducer as well. Any reason this wouldn't be worthwhile with the Staranalyser?

Al.