View single post by amazing50
 Posted: Wed Nov 13th, 2013 10:59
amazing50

 

Joined: Fri Apr 13th, 2012
Location: Kitchener, Ontario Canada
Posts: 571
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 I have a 1200mm f/8 astroscope that I used with my D1 years ago. A very heavy and clumsy beast and quite useless without a gear head on the tripod. The whole kit weighed in at about 30kg. There is no diaphram on astroscopes so you always shoot wide open, just like those mirror lenses, which by the way are much more compact and quite sharp for the money.
http://www.ebay.ca/itm/Vivitar-800mm-Mirror-Lens-f-8-Nikon-D50-D60-D70-D80-D90-D3X-D2X-D3-D40-/151041552526?pt=Camera_Lenses&hash=item232ac7308e#ht_3969wt_1122



____________________
There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace