Irkutsk Astroclub

To russian
80 mm binoculair 80/2.5 mm astrograph 135 mm Zeiss refractor 1908 (repaired by club members during 1998) 150 mm Schmidt-Cassegrain
not yet
150 mm Zeiss coude refractor 150 mm Schmidt camera 150 mm Gregorian 155 mm Newton
not yet
160 mm Newton (built by Anatoly Arsentjev) 155 mm Mirror Wright (built by Sergej Chuprakov) 184 mm Cassegrain (built by Sergej Chuprakov) Star globe
208 mm Newton on Dobson mount 210 mm Newton (built by Albert Dorofeev) 254 mm Newton-Cassegrain-Nesmith 300 mm Newton on Dobson mount

80 mm binoculair

Military binocular with 80 mm pupils diameters. Mounted on heavy geodetic tripod.

80/2.5 mm astrograph

Photocamera for rollfilm type 120. Mounted with 254 mm (10") Newton-Cassegrain-Nesmith.

135 mm Zeiss refractor 1908

Antique (built by Zeiss in 1908) scope, repaired in 1998. In 1908 the Siberian Geographical Society has purchased this telescope for public observatory. From 1920 to 1992 this scope works in Observatory of Irkutsk State University.

150 mm Schmidt-Cassegrain

First in Russia Schmidt-Cassegrain scope built by amateurs. Primary mirror is spheroidal, secondary is spherical. Equivalent focal length is 1350 mm. Coma free field of view is about 1 degree. This scope designed and constructed for expedition on total solar eclipse of March 9, 1997. This picture was taken with radial-density filter, placed near film.


150 mm Zeiss coude refractor

150 mm stationar mounted Zeiss coude refractor.

150 mm Schmidt camera

Mounted with 254 mm (10") Newton-Cassegrain-Nesmith. This camera not fast (A=1:3.5) but it was built for technology investigation before 150 mm Schmidt-Cassegrain building.

150 mm Gregoryan

This scope was built as eath-tube for demonstration it for tourists in Lake Baikal.

155 mm Newton

Used for astrophotography works on 254 mm (10") Newton-Cassegrain-Nesmith

160 mm Newton (built by Anatoly Arsentjev)

Mostly transpotable, exelent optics quality and useful scope ever built in our club!

155 mm Mirror Wright (built by Sergej Chuprakov)

First scope, based on new optical design, invented in 2003 (RU #2215314). The optical design represents the reflecting analog of the well-known Wright camera. Diameter of entrance pupil is 155 mm, focal length is 720 mm (A=1:4.5). It is the first telescope of the new optical systems class, founded on central symmetrical small-tilted reflecting schmidt-type correctors. More detailed information can be found on official web site of mirror Wright optical system. Unfortunately site completely in Russian, exception one document, contained full description.

184 mm Cassegrain (built by Sergej Chuprakov)

Focal length is 1290 mm (A=1:7). Central Occulting more than 13% for ajustiment simplification. Have no self-made mount, commonly mounted on MT-3S heavy TAL mount.

Star globe

This globe was built by youngest members of our club for astronomy education goals.

208 mm Newton on Dobson mount

Most used our scope. Main scope for sidewalk astronomy.

210 mm Newton (built by Albert Dorofeev)

The telescope, most automated and equipped with an electronics.

254 mm Newton-Cassegrain-Nesmith

Main scope of our club. Built in 1991 as a multifunction portable telescop, it used for visual observations, astrophotography, guide for astrophotographiyon 150 mm Schmidt camera and for testing of new equipments. Mounted on full self-build equatorial mount. Primary paraboloidal mirror is not fast (focal length is 1000 mm, A=1:4) that is necessary for observations in Newtonian focus. The transition from Newton system to Cassegrain-Nesmth implements by replacement of the block of the secondary mirror in the flange with spiders.

300 mm Newton on Dobson mount

The largest telescope of our club. Constructed in 1997, was planed as the main telescope for observations deep-sky objects on country expeditions.