Language
English
English
English
PLANEWAVE
This is a Dall-Kirkham optical design with coatings that are optimized to transmit in infrared or ultra violet wavelengths.
Available within 5-14 days
This includes products that we do not keep in stock but are only available on request or have been announced by the manufacturer. For orders of these items, a deposit is required, proportional to the total value of your order. As soon as we receive your order, we will notify you by e-mail or telephone, for the exact delivery time and the amount of the deposit.
PlaneWave IRDK24 DALL-KIRKHAM F/6.5
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".
Fused Silica
Fused Silica is a synthetic amorphous silica glass of the highest purity and one of the most transparent glasses made. The optical and thermal properties of fused silica are superior to other types of glass due to its purity. Its transmission and homogeneity exceed those of crystalline quartz without the problems of temperature instability inherent in the crystalline form. Fused Silica has a coefficient of thermal expansion six times lower than Borosilicate (Pyrex) glass, which means that as fused silica cools down, it preserves its shape to a high degree of accuracy. This translates into consistent optical performance and unchanging focus over temperature changes. With its high melting temperature ()~ 1.600 degree Celsius), a very low coefficient of thermal expansion and resistance to thermal shock, fused silica is the material of choice for professional observatories as well as various scientific applications.
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) | 109000 |
|---|---|
| Optical design | Κατοπτρικό Dall-Kirkham |
| Aperture (mm) | 610 |
| Focal length - F (mm) | 3962 |
| Focal ratio (f/) | 6.5 |
| Mount | Not included |
In the box:
Specifications:
Optical Design
Corrected Dall-Kirkham (CDK)
Aperture (mm)
24" (610 mm)
Focal Length
3.962 mm (155.98 inch)
Focal Ratio
f/6.5
Image Field
70 mm
Back Focus Distance
14.1" (358 mm) from Mounting Surface, 5.81" (148 mm) from Racked in Focuser
Central Obstruction
47% of the Primary Mirror Diameter
Substrate
Fused Silica
Optical length
55,98 inch (1.422 mm)
Optical Tube Weight
240 lbs (109 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
Ελληνικά
