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TEC 8"F15.5 Maksutov-Cassegrain

Auction No.:
15863
Current Bid:
$15300.00
High Bidder:
Ronald Scarboro
Bid History:
55 Bids [View History]
Location:
Machesney Park, IL - United States
Started:
09/17/2022 08:25PM
Ends:
09/24/2022 08:34PM
Shipping:
Buyer pays shipping
Payment:
PayPal, Credit Card, Personal or Cashier's Check, Bank to Bank Wire Transfer
Hits:
3338

Superb hand corrected TEC 8" F15.5 Maksutov-Cassegrain, with low-expansion quartz optics. The ultimate mid-sized lunar/planetary and double-star optical system. The design is coma-free over a 50mm field and can be used with wide field 2" oculars, 62x with a 50mm eyepiece, up to 620x (and more) with a 5mm eyepiece. The optics on this scope are super smooth and very accurate. The quartz primary allows this scope to settle quickly in dropping temperatures.

 At high power, you will see a clean, crisp Airy disc with one diffraction ring and a hint of a second ring. Close doubles are easy with this scope, and planet details are shown in high contrast under good seeing conditions. You will think you are looking thru a premium 8" refractor. Focus is achieved with a special ruby-tipped micrometer on a center-point sliding mirror tube. Imperceptible image shift even at very high powers. In good seeing, there is no ambiguity at the exact focus point where the image becomes razor sharp.

 Multi-coated optics insure high-contrast images. Internal baffles prevent stray light from nearby bright objects from reaching the focus point. Internal mixing fan behind the mirror allows fast cool-down of the primary mirror. Images are sharp and contrasty within minutes even on cool nights. 

 This scope is collimated and in excellent condition.

Specifications:

Clear aperture:  202mm, 8"

Secondary obstruction:  54.6mm, 2.15", 27% by diameter, 7.3% by area

Focal length:  3100mm, 122", F15.5 focal ratio

Tube weight:   9.94 kg, 21.9 lb

Tube dimension:   254mm x 737mm, 10" x 29"

Multi-coated optics on corrector, primary and secondary mirrors

Quartz primary and secondary mirrors

 Scope includes:

Internal cooling fan (requires 9-volt battery power)

Captain's wheel for ease in handling

Provision for 2 sets of finder brackets

Matching pair of mounting rings

Scope is shipped in well-padded shipping boxes

 Marjorie Christen, Astro-Physics

Time Placed User Bid Amount
09/24/2022 08:28PM Ronald Scarboro $15300.00 [ Auto Bid ]
09/24/2022 08:28PM Frank Skrobak $15200.00
09/24/2022 08:28PM Ronald Scarboro $15100.00 [ Auto Bid ]
09/24/2022 08:28PM Frank Skrobak $15000.00
09/24/2022 08:28PM Ronald Scarboro $14900.00 [ Auto Bid ]
09/24/2022 08:28PM Frank Skrobak $14800.00
09/24/2022 08:26PM Ronald Scarboro $14700.00 [ Auto Bid ]
09/24/2022 08:26PM Frank Skrobak $14600.00
09/24/2022 08:25PM Ronald Scarboro $14300.00 [ Auto Bid ]
09/24/2022 08:25PM Frank Skrobak $14200.00
09/24/2022 08:23PM Ronald Scarboro $13700.00 [ Auto Bid ]
09/24/2022 08:23PM Frank Skrobak $13600.00
09/24/2022 08:22PM Ronald Scarboro $13200.00 [ Auto Bid ]
09/24/2022 08:22PM Frank Skrobak $13100.00
09/24/2022 08:22PM Ronald Scarboro $12900.00 [ Auto Bid ]
09/24/2022 08:22PM Frank Skrobak $12800.00
09/24/2022 08:21PM Ronald Scarboro $12700.00 [ Auto Bid ]
09/24/2022 08:21PM Frank Skrobak $12600.00
09/24/2022 08:20PM Ronald Scarboro $11800.00 [ Auto Bid ]
09/24/2022 08:20PM Frank Skrobak $11700.00
09/24/2022 08:20PM Ronald Scarboro $11300.00 [ Auto Bid ]
09/24/2022 08:20PM Frank Skrobak $11200.00
09/24/2022 08:19PM Ronald Scarboro $10700.00 [ Auto Bid ]
09/24/2022 08:19PM Frank Skrobak $10600.00
09/24/2022 08:19PM Ronald Scarboro $10300.00 [ Auto Bid ]
09/24/2022 08:19PM Frank Skrobak $10200.00
09/24/2022 08:13PM Ronald Scarboro $10100.00
09/24/2022 08:01PM Frank Skrobak $8400.00 [ Auto Bid ]
09/24/2022 08:01PM Terry Richardson $8300.00
09/24/2022 08:00PM Frank Skrobak $8200.00 [ Auto Bid ]
09/24/2022 08:00PM Terry Richardson $8100.00
09/24/2022 06:24PM Frank Skrobak $7800.00
09/24/2022 04:17PM stephen coale $7700.00
09/24/2022 01:26AM Paul Morow $7550.00
09/23/2022 11:59PM stephen coale $7450.00
09/23/2022 11:47PM Frank Skrobak $7150.00
09/23/2022 11:02PM stephen coale $7050.00 [ Auto Bid ]
09/23/2022 11:02PM Frank Skrobak $7050.00
09/23/2022 11:01PM stephen coale $6650.00 [ Auto Bid ]
09/23/2022 11:01PM Frank Skrobak $6550.00
09/23/2022 08:47PM stephen coale $6450.00
09/23/2022 04:26AM Brian Wang $6350.00
09/23/2022 04:26AM Khaldun Maruf $6250.00 [ Auto Bid ]
09/23/2022 04:26AM Brian Wang $6200.00
09/22/2022 03:40AM Khaldun Maruf $6100.00
09/22/2022 12:01AM Les Poltrack $6000.00
09/21/2022 06:25PM Les Poltrack $5900.00
09/21/2022 03:37PM Paul Morow $5800.00
09/20/2022 04:52PM James Head $5700.00 [ Auto Bid ]
09/20/2022 04:52PM Brent Boshart $5700.00
09/20/2022 03:47PM James Head $5600.00 [ Auto Bid ]
09/20/2022 03:47PM John Gleason $5500.00
09/20/2022 03:02PM James Head $5300.00
09/20/2022 03:26AM Jared Seay $5200.00
09/18/2022 06:47PM Scott Mitchell $5100.00

Marjorie Christen (MarjChristen)

Rating: (Not Rated)

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