I
believe for the discovery image he used a 3" (76mm) Tak with the SBIG
10XE!
Joe,
I'm not sure whether
film is sensitive enough to show the nebula but you could try. This nebula has
a magnitude of 15 or 16. I know a lot of CCD imagers will be shooting M78 in
the near future. I look forward to seeing more pictures. What impresses me
about this discovery is that a person with modest equipment with a little
skill can make a big scientific contribution. I think Mr. McNeil is using a
homemade 10" f/5.6 Newtonian with a SBIG 10XE CCD camera.
Debbie