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Details about  SmartAstronomy-Kson Optical High Definition (HD) ED1026 APO Doublet Refractor

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SmartAstronomy-Kson Optical High Definition (HD) ED1026 APO Doublet Refractor
SmartAstronomy-Kson-Optical-High-Definition-HD-ED1026-APO-Doublet-Refractor
Item Sold
Item condition:
New
Ended:
Jul 13, 2012
Price:
US $899.00
[
History:
]
Shipping:
FREE Standard Shipping | See details
Item location:
New York, United States

Description

eBay item number:
380447096364
Seller assumes all responsibility for this listing.
Last updated on  Jun 27, 2012 15:14:46 PDT  View all revisions

Item specifics

Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition
Brand:

Kson Optical SmartAstronomy

Optical Design: Refractor Model:

ED1026

Mount Type: Dovetail MPN:

9820120103

Aperture: 102 mm

Model                                      

 

ED1026


Aperture                                 

 

102mm

Type                                     

 



refractor


Focal length                          

 

612mm, f/6

Finderscope (Included)                           

 


Red Dot


Focuser                              

 

1:10 Dual speed


 


Packaged weight                


6.5kgs

 

ED1026: Glass is FPL 51

We are proud to introduce Kson series High-Definition ED doublet superior refractors.

These refractors are all handcrafted with broadband multi-coating on each surface to eliminate false color.

Each tube assembly is Ronchi and star tested to ensure razor sharp images.

The 2” Crayford dual speed focuser provides smooth and precise focal adjustment that is a pleasure to handle.

The CNC machined tube is available in aluminum or carbon fiber and features a retractable dew-shield to prevent glare or moisture and a dovetail compatible with most commercial mounts.

The deluxe padded nylon case ensures the ideal storage and transport medium for these superb instruments.

5 Year Warranty


Features:

  • Objective Lens: 102mm aperture 612mm focal length, true doublet ED lens to reduce false colour and enhance contrast, hand-figured and star tested ED lens. Broadband Multi-coating on every surface to enhance transmissions

  • Tube: The tube is all Carbon Fiber, baffled and precision machined optical tube assembly, with retractable dew shield

  • Lens Cell: Stability treated precision machined and provides better and more stable alignment

  • Mounting System: Aluminium made deluxe dual mounting rings with vixen style plate

  • Focuser: 2" single speed crayford focuser, with rotation collar

  • Finder: Red dot finder (Bulls eye) with clear window and adjustable dim dot

  • Dimensions: 4.17"diameter main tube, 5" diameter dew shield OTA length from 26"-33", weight 5kgs

  • Resolution (Dawes Limit): 1.14"

  • Limiting Magnitude: 12.04

  • Max Magnification: 238x when the air is steady

  • Light gathering power vs. naked eye: 212x

 http://yhst-1469288697390.us-dc1-edit.store.yahoo.net/I/yhst-1469288697390_2216_9607414

The next picture is the Chromatic Aberration and Spot Diagram of the ED1026

http://yhst-1469288697390.us-dc1-edit.store.yahoo.net/I/yhst-1469288697390_2216_9740459


On Jun-20-12 at 22:47:01 PDT, seller added the following information:





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