Facilities >> Telescopes

Existing Observational and Support Facilities :

The observational and support facilities available at ARIES are described brefly in the following subsections.

I. Telescope for night sky observations :

The ARIES which was started with a 25 cm reflactor in 1955, installed four telescope namely 104 cm, 56 cm, 52 cm and 38 cm till 1972, for cometary, planetry, galactic and extragalactic research. The 25 cm telescope was very useful in the initial photographic and photoelectric programmes. Presently, the 15 cm reflector acquired in 1960 and 25 cm telescope are being used for acquring the ever curious visitor to ARIES with hevenly bodies.

The 38-cm, f/15 reflector telescope (Fecker,USA) installed in 1961 at Manora Peak has German mounting. The 52-cm reflector telescope (Cox, Hargreaves and Thomson Ltd, UK ) also installed in 1961 at Manora Peak has an equatorial fork mounting. The telescope has f/13 folded Cassegrain and f/70 Coude focii and is functioning since 1968. The 56-cm reflector telescope has f/15 folded Cassegrain on a fork mounting. These telescopes are going to be modernised so that they can be used for studies of variable stars, comets and earth's atmosphere.

The 104-cm Sampurnanand reflactor telescope was supplied and installed by Veb Carl Zeiss, Jena in 1972. It is a two-pier equatorial English mountaning telescope. the focal plane instruments are Cassegrain plate holder, Meinel camera, photoelectric photometer, near-infrared photometer, a laboratory spectrum scanner, CCD chips of sizes 384 X 576, 1024 X 2048 X 2048 pixels.for spectrophotometric observtions, an optical multi-channel analyzer with 1024 pixel Reticon array as detector is also available. The upgradation and modernisation of the telescope along with fpocal plane instruments are planned.

II. Solar Observing Facilities :

The ARIES has two telescopes of 15-cm apeture equipped with H-Alpha, Ca II K and CN filters and CCD cameras for carrying out observations of solar activity phenomena namly sunspot, faculae, plages, flares, prominences, etc. with a time resolution of upto 25 ms.

III. Support Facilities :

In order to meet the requirment for maintenance, design and fabrication of astronomical instrumentation as wel as for reserch support, ARIES has an electronics workshop, a mechanical workshop, fine technics laboratory which includes aluminizing unit and optics workshop, a fairly well-equipped library and a modern computer center.