[RightWhale]

narrow H-alpha filter

There's that hydrogen alpha band filter again. Very special construction, 7 layers of glass, the last very, very thin and difficult to make.

This image is the kind of astronomy we like. Forget those big NASA orbiting telescopes, forget those monstrous ground-based compensating optics constructs. This is the kind of thing amateurs can do, if they are really dedicated.

[sleavelessinseattle]

The more big projects they put in space the more repairmen they have to send up to maintain them!!! Ixnay on the groundbased economies! I want to be a space telescope lens cleaner when I grow up!!!!