On 24 Nov 2004 09:27:52 -0800, (Daniel Cervantes)
wrote:

I am looking for a light bucket to do spectrometry.
Daniel Cervantes

If the [stellar] image is not pin sharp onto the spectrograph slit
then energy is wasted and exposures become exceptionally long. Sharp
optics are needed and an efficient blazed grating producing a bright
1st order spectrum.

WPO - home of amateur spectroscopy
www.astroman.fsnet.co.uk