OST - Basics
CDK20 - Tube
| Type | Corrected Dall-Kirkham (CDK) |
|---|---|
| Diameter | 508 mm |
| Central obstruction | 198 mm |
| Focal length | 3454 mm |
| Focal ratio | f/6.8 |
| Spacial resolution | 0.3'' |
| Image field | 52 mm |
| Mirror substrate | Fused Silica |
| Length of the tube | 1194 mm |
| Back focus distance | 147 mm (behind the focuser) |
| Weight | 64 kg |
OST 2.0: The CDK20 from Planewave with the QHY600M and Sti
Mounting
The mounting consists of 2 perpendicular axes:
- right ascension (1)
- declination (2).
The right ascension axis is parallel to the Earth axis, pointing towards the northern/southern celestial pole on the northern/southern hemisphere, respectively. The declination axis points towards the celestial equator. The setup is described in a dedicated article.
| Manufacturer | 10 MICRON |
|---|---|
| Model | GM 4000 HPS II |
| Type | German equatorial mount |
Coordinates
| Degree, minutes, seconds | Decimal degrees | Degree, decimal minutes | |
| Latitude | 52° 24' 33,0624″ N | 52.409184 | 52° 24.55104 N |
| Longitude | 12° 58' 23,4666″ E | 12.973185 | 12° 58.39111 O |
| Altitude | 39 m $\pm$ 5 m |
Handling
Introductions to the general handling of the technology and to the usage of Maxim DL are of course also available.
Dome
The dome is made out of fibre-reinforced plastic (FRP). It was built and set up by Baader-Planetarium. The dome automatically follows the movement of the telescope. However, the azimuth, the hatch, and the shutter can be manually controlled by an infrared remote control.
| Diameter | 5.2 m |
|---|