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:
09/18/2022 03:25AM
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:
3487

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
09/25/2022 03:28AM Ronald Scarboro $15300.00 [ Auto Bid ]
09/25/2022 03:28AM Frank Skrobak $15200.00
09/25/2022 03:28AM Ronald Scarboro $15100.00 [ Auto Bid ]
09/25/2022 03:28AM Frank Skrobak $15000.00
09/25/2022 03:28AM Ronald Scarboro $14900.00 [ Auto Bid ]
09/25/2022 03:28AM Frank Skrobak $14800.00
09/25/2022 03:26AM Ronald Scarboro $14700.00 [ Auto Bid ]
09/25/2022 03:26AM Frank Skrobak $14600.00
09/25/2022 03:25AM Ronald Scarboro $14300.00 [ Auto Bid ]
09/25/2022 03:25AM Frank Skrobak $14200.00
09/25/2022 03:23AM Ronald Scarboro $13700.00 [ Auto Bid ]
09/25/2022 03:23AM Frank Skrobak $13600.00
09/25/2022 03:22AM Ronald Scarboro $13200.00 [ Auto Bid ]
09/25/2022 03:22AM Frank Skrobak $13100.00
09/25/2022 03:22AM Ronald Scarboro $12900.00 [ Auto Bid ]
09/25/2022 03:22AM Frank Skrobak $12800.00
09/25/2022 03:21AM Ronald Scarboro $12700.00 [ Auto Bid ]
09/25/2022 03:21AM Frank Skrobak $12600.00
09/25/2022 03:20AM Ronald Scarboro $11800.00 [ Auto Bid ]
09/25/2022 03:20AM Frank Skrobak $11700.00
09/25/2022 03:20AM Ronald Scarboro $11300.00 [ Auto Bid ]
09/25/2022 03:20AM Frank Skrobak $11200.00
09/25/2022 03:19AM Ronald Scarboro $10700.00 [ Auto Bid ]
09/25/2022 03:19AM Frank Skrobak $10600.00
09/25/2022 03:19AM Ronald Scarboro $10300.00 [ Auto Bid ]
09/25/2022 03:19AM Frank Skrobak $10200.00
09/25/2022 03:13AM Ronald Scarboro $10100.00
09/25/2022 03:01AM Frank Skrobak $8400.00 [ Auto Bid ]
09/25/2022 03:01AM Terry Richardson $8300.00
09/25/2022 03:00AM Frank Skrobak $8200.00 [ Auto Bid ]
09/25/2022 03:00AM Terry Richardson $8100.00
09/25/2022 01:24AM Frank Skrobak $7800.00
09/24/2022 11:17PM stephen coale $7700.00
09/24/2022 08:26AM Paul Morow $7550.00
09/24/2022 06:59AM stephen coale $7450.00
09/24/2022 06:47AM Frank Skrobak $7150.00
09/24/2022 06:02AM stephen coale $7050.00 [ Auto Bid ]
09/24/2022 06:02AM Frank Skrobak $7050.00
09/24/2022 06:01AM stephen coale $6650.00 [ Auto Bid ]
09/24/2022 06:01AM Frank Skrobak $6550.00
09/24/2022 03:47AM stephen coale $6450.00
09/23/2022 11:26AM Brian Wang $6350.00
09/23/2022 11:26AM Khaldun Maruf $6250.00 [ Auto Bid ]
09/23/2022 11:26AM Brian Wang $6200.00
09/22/2022 10:40AM Khaldun Maruf $6100.00
09/22/2022 07:01AM Les Poltrack $6000.00
09/22/2022 01:25AM Les Poltrack $5900.00
09/21/2022 10:37PM Paul Morow $5800.00
09/20/2022 11:52PM James Head $5700.00 [ Auto Bid ]
09/20/2022 11:52PM Brent Boshart $5700.00
09/20/2022 10:47PM James Head $5600.00 [ Auto Bid ]
09/20/2022 10:47PM John Gleason $5500.00
09/20/2022 10:02PM James Head $5300.00
09/20/2022 10:26AM Jared Seay $5200.00
09/19/2022 01:47AM Scott Mitchell $5100.00

Marjorie Christen (MarjChristen)

Rating: (Not Rated)

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