The Spilit of Nippon Kogaku Tokyo
Nikon Kenkyukai Tokyo Meeting
Historical Nikon 91cm
Nikon Kenkyukai Dodaira Meeting
The Dodaira Astronomical Observatory is located in the Mt. Dodaira above sea level 876 m in Saitama Prefecture near Tokyo. There is a 36-inch astronomical reflector dome. This astronomical dome was constructed in November 1962 by the Mitsui shipyard. The special research team of the Nikon Kenkyukai visited Dodaira Observatory to meet the big Nikon 36-inch astronomical reflector.
This dome was built in the Mitsui shipyard
The DODAIRA's Observatory Dome
Nikon 91cm Astronomical Photographic Reflector
The Nikon 91cm Astronomical Photographic Reflector
You can remember the Dodaira Astronomical Observatory by the report of the Nikon Kenkyukai June 2005 meeting . The Nikon 91cm astronomical photographic reflector is set up in a beautiful dome. The performance of Nikon 91cm astronomical reflector is still big excellent. The Dodaira Astronomical Observatory is the science facilities with historical value very much.
Beautiful Nikon 91cm Reflector and Dome
Historical Nikon 91cm Astronomical Photographic Reflector
Left: Dome Controller, Right: Telescope Controllers
Technical data of the Nikon 91cm
- Main telescope
Diameter of primary mirror : 914 mm
Type : Refraction
- Equatorial mount
Type : English style
Dimensions of Nikon 91cm Astronomical Photographic Reflector
Optical path diagram of Nikon 91cm Astronomical Photographic Reflector
NHK TV Program
The NHK news gathering crew visited the the Dodaira Astronomical Observatory on the day when Nikon Kenkyukai members gathered in that place. The report of that day was broadcast in the Japanese whole country on October 19, 2007.
Staff in TV Station
They were interested in the big telescope
The staff in the TV station interviewed Nikon Kenkyukai
Dinner at the Astronomical Observatory
We enjoyed ourselves over dinner at a restaurant Dodaira Observatory. We toasted with the beer for a beautiful star. Cheers!
Dinner in Astronomical Observatory
Delicious Beer of Local, OGAWA
Great Seeing by Nikon
A big dome in the astronomical observatory opens quietly, and the cold night sky appeared. We watched the brilliant star by the Nikon big telescope.
Very Excellent Big Telescope Nikon 91cm
You can see the stellar light directly
Grand Reflector Nikon 91cm Super Light
The Brilliant Nippon Kogaku Tokyo Crest
Historical Value of Dodaira Observatory
A lot of cost is necessary to maintain an old astronomical observatory. However, the astronomical observatory with the history is valuable existence. Please assist in DODAIRA to the Nikon fan in the world so that the Dodaira Astronomical Observatory may live for a long time. The photograph below is Koichiro Tomita and scientists in Tokyo Astronomical Observatory.
Koichiro Tomita and scientists in Tokyo astronomical observatory
Attached to the bottom of the 91 cm reflector is a multicolor polarization photometer. This photo was taken in the 1970s. Koichiro Tomita is the person on the far left in the front row. He wears a woolen hat and black-rimmed glasses. Sen Kikuchi of the Tokyo Astronomical Observatory, second from the right in the front row, has long hair and glasses. He is the main researcher who developed this polychromatic polarimeter.
The Japanese science magazine NIKKEI SCIENCE is the Japanese version of SCIENTIFIC AMERICAN magazine. It was good news for 2022. Part of the web article of the Japanese version of the Nikon Kenkyukai was quoted and published in the NIKKEI SCIENCE magazine.
NIKKEI SCIENCE March 2022
Nippon Astronomical Heritage 35th, Former Tokyo Astronomical Observatory Dodaira Observatory. The essay contributed by astronomer Hiroki Kousai was quoted in NIKKEI SCIENCE March 2022.
NIKKEI SCIENCE August 2022
Nippon Astronomical Heritage 38th, Dodaira Schmidt Telescope. The essay contributed by Dr. Junichi Watanabe of the National Astronomical Observatory of Japan (NAOJ) was quoted in NIKKEI SCIENCE August 2022.
The Nikon Kenkyukai Tokyo contributes to the development of science and technology in Japan.
Copyright Michio Akiyama, Tokyo Japan 2008, 2023