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Our recent observations with the Hubble Space Telescope (August 29, 2014) led to revealing a highly isolated dwarf spheroidal galaxy KKs 3 situated at a distance of 2.12±0.07 Mpc from the Milky Way. The dSph galaxy locates on the southern sky (RA=02h24m44.4s, Dec.=-73°30'51", J2000.0) and has a stellar mass about 1/10000 of the Milky Way mass. More...

SS433 is a close binary system, one star is a supergiant, a second one is a black hole. The supergiant's matter overflows to the neighbouring black hole and floods the hole with a powerful mass flux: 6 millions of billions tons per second (that is one Earth mass for 11 days). Even a black hole cannot accept such an enormous mass flux, a supercritical accretion disk appears More...

The variability of the spectrum of the optical component of the IR-source IRAS01005+7910 was discovered for the first time in the BTA spectra [1]. Long-term monitoring of the object was carried out during 2002-2013 with a high spectral resolution (R=60000). More...

Astronomers of the SAO together with an international group of scientists have proposed an explanation to the long-standing mystery of why magnetic fields are more common amongst cool white dwarf stars than amongst young and hotter ones. More...



09.02.15 The traditional annual competition conference of scientific and scientific-engineering papers of the Observatory staff members
09.02.15 I.M.Kopylov's grant 2015 and
S.E.Khajkin's grant 2015
09.02.15 BTA, a unique scientific installation. The report on the applied research in 2014
05.01.15 SAO Report 2013
09.02.15 Astrophysical Bulletin, vol. 70, number 1 is published.
(Russian version)
02.03.15 Announce, news, discussion (restricted)

Radio telescope

Telescope Zeiss-1000

Sun monitoring

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Last update: 09/02/2015