新手问问这个镜子如何,今天在ebay上看到的,$565拍下来的。周末去取,下面是这个镜子的信息。这个应该是很古老的c8吧?具体链接在这里,谢谢!
http://cgi.ebay.com/ws/eBayISAPI ... yVyxsBbiQqKtKc%253D
* Clear aperture - 8" (200mm)
* Light grasp - 843 times the unaided eye
* Cassegrain focal length - 80" (2000mm)
* Magnification - 77.9x (26mm eyepiece), 285.7x (7mm eyepiece)
* Resolution (Dawes limit) - 0.6 arc sec; 210 lines per millimeter
* Corrector coatings - Special multiple magnesium fluoride coatings
* Mirror coatings- Aluminum silver with optional Starbright silver coatings for both primary and secondary mirror.
* Faintest stellar magnitude - 14 (visual), 16 (photographic)
* Focal ratio - f/10
* Image scale - 0.76 degrees per inch
* Illuminated field- 2.75" circle
* Near focus - 25 feet
* Secondary obstruction - 2-3/4" (12%)
* Finder scope - 8x50mm, right angle, illuminated reticle (also serves as Polaris alignment finder)
* Visual back - 1.25" (2" optional)
* Eyepieces, 1.25" - 7mm Orthoscopic, 26mm Plossl
* Star diagonal - Mirror type, 1.25"
* Setting circle diameter - RA 8" (driven), DEC 4.25"
* Electric clock drive - Celestron-Beyers worm gear drive, 3 watts (110v, 60 Hz)
* Drive gear - 7.54" PD
* Polar axis - 1-3/8" tapered
* Optical tube weight - 11.25 pounds
* Telescope weight (with fork) - 23 pounds without tripod and wedge (The Celestron Product Guide and Reference Manual says 36 pounds)
* Optical tube dimensions - 9" diameter, 17" long
* Carrying case - 13"x16"x30"
* Shipping weight - 48 pounds without tripod and wedge
* Standard features - internal sliding focus assembly, piggyback camera mount, lens caps, carrying case, power cord
* Optional features - Wedge with bubble level and latitude scale; heavy-duty Celestron Adjustable Tripod with locking steel legs
Here are the specifications for the Celestron Equatorial Wedge 5/8:
* Dimensions - 12"x10"x12"
* Weight - 5.25 pounds
* Latitude adjustment range - 0 degrees to 60 degrees
* Latitude fine adjustment - Yes
* Deluxe latitude adjuster - Yes
* Bubble level - Yes
* Mounting holes - (3) 5/16" slots
* Color - Black
Here are the specifications for the Adjustable Tripod 5/8:
* Height (legs retracted) - 29"
* Height (legs fully extended) - 51.5"
* Area of base (footprint) with legs retracted - 424 sq. in.
* Area of base (footprint) with legs fully extended - 1032 sq. in.
* Photographic extension - 21" above the top of the tripod head
* Weight - 15 pounds (without wedge)
* Mounting bolt - (3) 5/16x18 (wedge); (1) 1/4x20 (camera)
* Color - Black |
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