Anonymous
Unregistered
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Here's a link to a comprehensive list of the worlds largest optical telescopes & related observatories as posted by Bill Arnett on his site. Also included is the respective website to each.
A Very informative list IMHO!!!
World's Largest Scopes & Observatories
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half meter
Postmaster
Reged: 05/05/04
Posts: 12517
Loc: Great Lakes
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Quote:
A Very informative list IMHO!!!
It sure is. I was fascinated by the OWL (OverWhelmingly Large Telescope) 
The OWL seems to demonstrate, as Dick Suiter has repeatedly stated, that a larger aperture makes up for lack of a perfect optical surface, even though it seems like cheating! The OWL segmented mirror is 100 meters across, and their design target is a Strehl ratio of only 0.20 (hoping for 0.30)  For reference, a excellent quality amateur-sized mirror is required to have a Strehl above 0.95 (where 1.0 is perfect.)
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Gary
Collins I3 (Thin Film) Image Intensifying Eyepiece
Coronado Maxscope DS 90 <0.5A w/BF30
152 mm f/8 TMB/A&M Carbon Fiber APO; f/5 with 4" Borg ED Field Flattener/Reducer
20" Obsession/OMI Mirror/Servocat/Argo Navis
 First Light for the 30" Obsession at BEOTS!
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BluewaterObserva
Post Laureate
Reged: 05/18/04
Posts: 4763
Loc: Zuni Mtns, NM
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F/19 1 meter refractor.. Cool cool cool....
Thanks for the post....
I see my .9 meter mirror won't even rank!! lol
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Jarad
Post Laureate
Reged: 04/28/03
Posts: 3858
Loc: Atlanta, GA
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Quote:
I see my .9 meter mirror won't even rank!! lol
Well, you can send it on over to me. I'll take care of it for you while you build a bigger one to get on the list....
Jarad
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Anonymous
Unregistered
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OMG! OWL!! 
nice thread!! 
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Dagobert
super member
Reged: 10/22/04
Posts: 109
Loc: Homewood, IL
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Great collection of links. I love to check out those sites. It is amazing to me the great variety of approaches to building the ultimate scope. See thread in the refractor forum entitled "The Grand Daddy of Them All" for a picture and discussion of the 40" refractor. I just visited 2 weeks ago - unbelievable! Built over 100 years ago.
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Chris
Zeiss APQ 130/Tak EM-200 Temma
/MiniBorg 45ED/Canon-Hutech 300D/
HP hx4700 PDA/Saeco Italia Espresso Machine
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John Jarosz
I'm being watched...
Reged: 04/25/04
Posts: 2193
Loc: Chicago area, IL
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The OWL link was very cool. They even seem to have a sense of humor about the project becuse they say "if it has to be scaled back" because of budget constraints, the then acronym will be "Originally Was Larger" 
John
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6" F4.6(w/Paracorr) GEM reflector, 8" F11 Dall Relay Scope
6" F5 RFT Refractor, Garrett Gemini 20x80 LW
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LivingNDixie
Lord of Ferrets
Reged: 04/23/03
Posts: 15796
Loc: Hoover, AL
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Neat!
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Preston
Celestron 11" Nexstar GPS XLT
Lunt LS60T/Ha 60mm f/8.33 (on order)
It’s not finishing something when your tank is empty that makes you a stronger person. It’s brushing yourself off and refacing the foe that defeated you with the same determination and willingness to fight that you had when you began your journey.
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Anonymous
Unregistered
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Hi,
i have something cool observatory pictures 
not only the greatest,but very impressing
here the paris old observatory with secretan refractor D 380 mm f 5 metre
Edited by half meter (12/21/04 04:02 PM)
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Anonymous
Unregistered
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and here
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Anonymous
Unregistered
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Sorry -here more info
Berlin-Potsdam
D 800/500 f15/25 double refractor on Repsold equatorial mount-now will be renovation-ready in 2006
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