PlaneWave 20″ Optimised Dall Kirkham

Brand: Planewave
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  5. PlaneWave 20″ Optimised Dall Kirkham
Brand: Planewave
SKU: 200120Q
$61,999.00

– Price shown includes GST
– GST is removed at checkout for NZ

Not currently in stock. You can backorder now, but product will be delayed by two weeks or more due to global logistics.

For better availability information call 02 9518 7255 or email sales@bintel.com.au

QUANTITY

The PlaneWave 20″ Optimised Dall-Kirkham has been design with coatings that are optimized to transmit in infrared or ultra violet wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.  There are no refractive lens, only reflective components to the design.  For IR application, reflectives coatings are a protected gold which give better than 98% reflectivity from .65 micron (650nm) to 5 micron (5000nm).  This design is ideal for infrared astronomy or LIDAR applications.  UV optimized coatings can also be used at an additional cost.

OPTICAL SYSTEM

Aperture20″ (.51m)
Focal Length3454 mm
Central Obstruction39% of the Primary Mirror Diameter
Back Focus8.9″ from focuser mounting surface, 5.81″ from racked in focuser
Weight140 lbs
OTA Length47″
Upper CageCarbon Fiber Truss
Lower CageCarbon Fiber Truss with Carbon Fiber light shroud
DimensionsOverall Dimensions

SECONDARY MIRROR

Diameter7.5″
MaterialPrecision Annealed Pyrex
ShapeSpherical
CoatingProtected Gold Reflective Coating – 98% (.65-16micron)

SECONDARY MIRROR

MaterialPrecision Annealed Pyrex

TERTIARY MIRROR

MaterialPrecision Annealed Pyrex

STANDARD FEATURES

Carbon Fiber Truss DesignMinimizes thermal expansion which causes focus shift with changes in temperature
Dovetail expansion jointAllows for the difference in thermal expansion between carbon fiber and aluminium. The expansion joint allows the aluminium dovetail expand and contract without stressing the carbon fiber lower truss
Cooling FansThree cooling fan blow out of the optical tube pulling air though the telescope and pass the primary mirror. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased.

SHIPPING

Crated Shipping Weight291 lbs   (132.0 kg)
Crate Width32 inch   (813 mm)
Crate Height36 inch   (914 mm)
Crate Length59 inch   (1,499 mm)

NOTE: This item has a lengthy leadtime. for more details email: education@bintel.com.au 

PlaneWave 20″ Optimised Dall Kirkham

SKU: 200120Q

The PlaneWave 20″ Optimised Dall-Kirkham has been design with coatings that are optimized to transmit in infrared or ultra violet wavelengths.  It is diffraction limited across a 20mm image circle at the focal plane.  There are no refractive lens, only reflective components to the design.  For IR application, reflectives coatings are a protected gold which give better than 98% reflectivity from .65 micron (650nm) to 5 micron (5000nm).  This design is ideal for infrared astronomy or LIDAR applications.  UV optimized coatings can also be used at an additional cost.

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