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求助--全球著名望远镜生产厂家简介
不大对得上:
Category 1: Not Recommended ($300 and less)
Most shopping channel, department store telescopes, etc
Telescopes found in closeout type catalogs
At least 90%-95% of telescopes on ebay
Category 2: Recommended With Reservations ($300-$600)
Meade DS/EC Series
Bushnell Voyager Dobsonians
Old Coulters with blue tubes
Old 1980s vintage Celestrons with the word Comet in them
Celestron C150HD, G8N and NexStar 114 hybrid Newtonians (2+)
Celestron NexStar 114GT (Hybrid, 2+)
Edmund Astroscan
Category 3: Recommended ($250-$1500)
Most Celestrons
Meade Starfinders (watch out for #77 2 plastic focuser)
Most older Meades, 6 and larger (#628, #645, #826, #6600, #8800, etc) (3+)
Meade 4500 (Avoid similar versions with .965 eyepieces)
Most old Edmunds (red-tubed models preferable to white-tubed ones)
Old Criterion Dynascopes (6, 8, check to see that RA drive works)
Orion XT and Sky View Deluxe models
Older Orion Dobs (DSE, etc)
Discovery
Coulter/Odyssey/Murnaghan scopes with red tubes (3-)
Old Junos (3+)
Stargazer Steve (kit)
Orion (UK) (3+) (unavailable in US)
Category 4: Highly Recommended ($500-$3000)
DGM (4+)
Parks
Most old Cave Astrolas
Old Meade Research Grade Reflectors (8, 10, 12.5) (4+)
Tectron
Sky Designs
Old Starliners
Sovietski
TAL
Most Vixens
Category 5: Highest Recommendation ($1500-$20000+)
JMI NGT (12.5, 18)
Mag 1 Instruments Portaballs
Obsession
Starmaster
Starsplitter
Takahashi
Optical Guidance Systems
Parallax
Night Sky Scopes (structure only)
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