Dinium Observatory is a private backyard observatory on Rennesøy (Isle of Rennes) in south-west Norway. It is constructed by R.W.Williams, a typical amateur astronomer (childhood interest in astronomy, mirror grinding as a teen, telescope diameter increase proportional to age ;-)
The dome is a ScopeDome, possibly the best value on the dome market. It's solid, stiff, dry, and it looks nice, like the three space pods on the Discovery in Kubrick's 2001: A Space Odyssey.
The Astrosysteme Austria DDM 160 is pure spitzenklasse. Direct drive, no gears or belts. The only moving parts are the bearings. The drive is completely silent, which can be an HSE-problem during a fast slew ;-) Tracking and pointing accuracy are better than they need to be.
This was custom made by Astrosysteme Austria to the specifications for my optics. The tube is very stiff and well designed. It has a removable secondary which gives access to the f/3.4 prime focus, and the latter even has an integrated field flattener for a 65 mm diameter field.
Prime focus and Cassegrain focus correctors are also custom made by ASA to the specifications of my optics.
Ground work began in 2012, dome construction in 2013. The project is now in its final phase: fine-grinding, polishing and figuring of the 62 cm (24 inch) f/3.4 parabolic primary mirror and the 20 cm (8 inch) convex hyperbolic secondary mirror which will produce an f/10.4 Cassegrain focus.
Observatory: private, backyard
Site: Isle of Rennes, SW Norway
Altitude: 40 m
Enclosure: 4.0 m ScopeDome
Type: Optical telescope
Optical design: Standard Cassegrain w/corrected prime and Cass focus
Diameter Primary: 0.62 m
Material Primary: Schott Borofloat
Diameter Secondary: 0.2 m
Material Secondary: Borosilicate
Mount: GEM-type ASA DDM160 high torque, direct-drive
First Light of the 62cm: March 2020
Active Optics: No
Camera: 16 Megapixels Apogee U16M (4000x4000 pixel CCD detector)
Filters: Chroma Ha, OIII, SII, Lum, R, G, B
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