Since I've not got much experience with 'nice' scopes, what should I be looking for? Is there something I'll see that will indicate that the scope is vignetting? Or will the image just not be as detailed as it could be were the scope using all of its mirror? What things might I see to indicate that the mirror is not fully parabolized? I'll be testing it out tonight, so of course that will probably be the real test--if it's enjoyable to use. -- Dan Hanks On Thu, 2 May 2002, Chuck Hards wrote:
Hi Dan:
The scope was reviewed in S&T some years back, and as I recall, had some problems.
The focuser was too tall for the secondary mirror size, causing vignetting. What this means is that the telescope only uses about 3" of it's mirror.
I also seem to recall that the mirror was not fully parabolized, but my memory may be faulty on this score.
If you have access to an S&T index, look up the article.
On the other hand, if it gives pleasing images, (try it first!), offer what you think it's worth. $100 is too high, in my opinion.
Chuck Hards
--- hanksdc@plug.org wrote:
Hi there,
I have a co-worker who is looking to sell a telescope. I am thinking of buying it, but thought I'd get some advice here first. The telescope is currently much better than anything I have now (which isn't saying a lot :-). It's a Bushnell Voyager, a pretty standard equatorial-mount newtonian. I believe the primary mirror is 4". She's willing to sell it for about $100.
I don't get out observing much these days, but perhaps a better scope like this would encourage me to do more.
Any advice? Is this one of those drugstore types to avoid?
Thanks,
Dan Hanks
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