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PLANEWAVE
This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared or ultra violet wavelengths.
Available Upon Request
This includes products that we do not keep in stock but are only available upon request or have been announced in advance by the manufacturer. These items are usually shipped within 5-14 days. Once we receive your order, we will notify you by e-mail or telephone of the exact delivery time, as well as the amount of any deposit that will be required.
PlaneWave IRDK20 DALL-KIRKHAM F/6.8
This is a Dall-Kirkham optical 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.
The DK is available in the three different apertures 24 ", 20", 14" and 12,5".
The telescope is also available in fused silica optics
IMPORTANT:
Τhe telescope is transported from abroad, with extra costs of special packaging and shipping. These costs are related to the transport of the telescope from abroad to Greece and are irrelevant of the shipping cost within Greece. Please, contact us for the total cost.
| Net Weight (g) | 64000 |
|---|---|
| Optical design | Κατοπτρικό Dall-Kirkham |
| Aperture (mm) | 598 |
| Focal length - F (mm) | 3454 |
| Focal ratio (f/) | 6.8 |
| Mount | Not included |
In the box:
Specifications:
Optical Design
Corrected Dall-Kirkham (CDK)
Aperture (mm)
20" (508 mm)
Focal Length
3.454 mm (135.98 inch)
Focal Ratio
f/6.8
Image Field
52 mm
Back Focus Distance
5.8" (147 mm) from Racked in Focuser
Central Obstruction
39% of the Primary Mirror Diameter
Substrate
Fused Silica
Optical length
47 inch (1.194 mm)
Optical Tube Weight
140 lbs (64 kg)
All orders we receive until 15:00 concerning products in our warehouse, processed on the same day
Well-trained scientific and technical personnel are available to you at any time, to solve the questions and concerns about your equipment.
If you are not satisfied with the product you received, you can return it within 14 days of receipt.
Experience you can trust. Planetarium of Thessaloniki is the largest supplier of astronomy goods in the Balkans
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