Hartung stated that he used a "
direct vision prism" at the ocular of his telescope to detect if an object was a
Star or a
Nebula.
I am wondering if one of these
Transmission Grating Spectrometers would afford the same/similar
crude information when held to the eyepiece?
http://www.oplspectra.com/index.php?...mart&Itemid=32
http://www.patonhawksley.co.uk/spectroscope.html
Any thoughts would be welcome.
Michael.