13835Re: Poor Seeing
- Feb 5, 2004
> I have a 90mm f/10 doublet refractor that I rebuilt a few yearsago. It now has a
> collimatable cell, better baffling, a 2" focuser, and all alignedproperly--- it actually
> performs quite well, sharpness, contrast and even color-wise, it'sa honey. I usually put
> it on a CI-700 mount--- a bit of a lug, but I could also put it onan el cheapo GEM I
> still have around, just for that purpose! :) Hmmm.a lot of work, but can
> If things don't look good (or just barely), then I haven't invested
> still get some pretty nice views. And if the view is shockinglygood, it won't but take a
> moment to run in and get one of my "real" telescopes.WG,
While I'm a firm believer in mount "overkill", I think the CI-700
with a 90mm refractor just to check out the seeing might bring new
meaning to the word!
I've actually thought about attaching a cheap finder mount to a post
outside and taking a 50mm RA finder with a high-mag EP out just to
check out the seeing.
I have a TV76 on a Bogen 3051 with a Lapides modified Teegul on
order. (Yes, I know, the Bogen 3051 is overkill.) As far as I know,
the modified Teegul is the only clutchless alt-az that also has fine
motion controls - which is why I bought it. This scope actually gets
used more for terrestrial viewing.
I probably should have bought a TMB 80 f/6 instead of the TV76. The
lateral color in the TV76 bothers me, although I'm not sure it isn't
the eyepiece (I can see it with a 24mm Panoptic, for example). The
TMB 80 f/6 seems to be the only APO triplet in it's size on the
I'm still working on a "real" telescope - a 4-6" APO on a equatorial
mount is probably next.
- << Previous post in topic Next post in topic >>