Re: ATM quality of mirror

["Bob May" <bobmay@nethere.com>]

1/4 wave (approx) P-V isn't all that great but I might remind you that
there's a photographer that has been published in S&T often who has for his
telescope one that has 1/2 wave RMS (which means a lot worse mirror than
yours)  errors in it and he still gets great photos from it.
I'd be happy with the mirror as it is as it's probably a lot better than it
seems (where is the error and how much of the mirror is that area? kind of
questions) and even if it's not perfect (what mirror is perfect?) that
doesn't mean that things are going to be that bad.  You may lose 5% of the
ability to resolve close doubles but you're not going to be really doing
such a difficult action very often.  With your target audience, the
probability is that you are just going to be showing some of the spectacular
attractions to people that have absolutely no idea of how well the telescope
is performing relative to what it could do and, on top of that, have no idea
of how to really focus the telescope to get the maximum out of it anyway.
Bob May
http://nav.to/bobmay
bobmay@nethere.com