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Planewave 12.5 inch CDK Optical Tube Assembly Sold!

Price - $7,000.00

Ad Number: 161539

Posted: 05 Feb 2019

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Contact me or purchase direct on my website

OPTICAL SYSTEM
Aperture 12.5 inch (318 mm)
Focal Length 2541 mm (100.04 inch)
Focal ratio f/8
Central Obstruction 42% of the Primary Mirror Diameter
Back Focus from Mounting Surface 10.445 inch (265 mm)
Back Focus from Racked in Focuser 7.2 inch (183 mm)
OTA Length 31 inch (787 mm)
Optical Tube Carbon Fiber
Dimensions Overall Dimensions (PDF)
Weight (includes manual-focuser and dovetail) 46 lbs (20.9 kg)
Weight (includes electronic-focuser and dovetail) 48.5 lbs (22.0 kg)
SECONDARY MIRROR
Diameter 4.65 inch (118 mm)
Material Precision Annealed Borosilicate or Fused Silica
Shape Spherical
Coating Enhanced Aluminum - 96%
PRIMARY MIRROR
Optical Diameter 12.5 inch (318 mm)
Outer Diameter 13 inch (330 mm)
Shape Prolate Ellipsoid
Material Precision Annealed Borosilicate or Fused Silica
Coating Enhanced Aluminum - 96%
LENS GROUP
Diameter 70 mm (2.76 inch)
Number of lenses 2
Coating Broadband AR Coatings (less than .5% reflected from 400 to 700nm)

SHIPPING INFORMATION
Crated Shipping Weight 163 lbs (73.9 kg)
Crate Width 22 inch (559 mm)
Crate Height 29 inch (737 mm)
Crate Length 48 inch (1,219 mm)

INCLUDED ACCESSORIES
Delta T
EFA
Second Losmandy Rail
2.75" to 2" Adapter (125355) Adapts the 2.75" inner diameter of the focuser to a standard 2" inner diameter. This adapter is necessary when setting the primary to secondary spacing. The 125399 Visual 2.75" to 2" adapter is an optional accessory that is designed to space a 2" diagonal for visual use.
Ronchi Spacer (200354) This spacer is used for setting the primary to secondary spacing. It has an 1-1/4 inner diameter and may be used with 1-1/4 oculars for collimation.
Ronchi Ocular This ocular is a Ronchi screen used for setting the primary to secondary spacing.
OTA Cover The OTA cover is for closing the front of the tube to protect the primary mirror and the inside of the optical tube.

Reducer is available for $800 extra

General


  • Condition used
  • Location NJ



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