IR Imaging Possible?

alt.astronomy:


If one had a 10" Newtonian reflector telescope, and, say f-6, would it
be possible to photograph The Sagittarius Galaxy stream in the Milky Way
Galaxy in infra-red light?

Would the focal length be too long to get a sufficiently wide view?
Would a 28mm SLR camera size optics be better than the 10" f-6 ?

Would it be necessary to use gold metal reflecting surfaces?
Germanium refractive optics?
Monochrome images?
Conversion of IR to visible light images?
What about direct imaging in film OR CCD cameras?


Ralph Hertle