... The circumnuclear GASEOUS disks are often decoupled from the circumnuclear stellar disks and are even stronger inclined to the outer disk planes; in fact, we have found a considerable `population' of inner polar rings. Inner gas polar rings are found as in spiral galaxies with the massive outer gas disks co-planar to the main symmetry planes (e.g. NGC 2841, Sil'chenko et al. 1997, and NGC 7217, Sil'chenko & Afanasiev 2000) as well in many lenticular galaxies (Fig. ...

... Solar Eclipses in 2009 : . There are two eclipses of the Sun (an annular eclipse on January 26 and a total eclipse on July 21-22 ) in 2009. ... Annular Solar Eclipse . ... Annular Eclipse of the Sun on January 26, 2009 . ... Beginning of northern limit of umbra . ... Beginning of center line; central eclipse begins . ... Central eclipse at local apparent noon . ... Total solar eclipse . ... An annular eclipse occurs when the apparent disk of the Moon is smaller than that of the Sun. ... Umbra: . ...

Общая Астрономическая Конференция > Практика > Астрономические наблюдения > Новая . ... 27.10.2009, 21:16 . ... 1994 (Daniel W. E. Green, ed.) reports the discovery of an apparent nova by Koichi Nishiyama, Kurume, Fukuoka-ken, Japan, and Fujio Kabashima, Miyaki-cho, Saga-ken, Japan, at magnitude 9.3 on two 60-s unfiltered CCD frames taken on Oct. 26.439 and 26.440 UT. Five unfiltered CCD frames taken around Oct. 26.455 yielded mag 9.3 and the following position: . ...

... During all period of our investigations Dr. N.Sumzina from the Institute of Applied Astronomy of RAS had prepared the Numbered Minor Planet positions from MPC Database for our processing with kind permission of the Director of Minor Planet Center Prof. Braian Marsden. ... Our extensive processing of the MPC data allows us to conclude that CCD observations of the Numbered and Unnumbered Minor Planets have the errors, sometimes very crude. ...

Launch Vehicle Soyuz . To give the ability of launching manned space vehicles "Soyuz" of a greater mass comparing to "Vostok" (initially 5.8 t and then 6.5 t instead of 4.8 t.), the "Vostok" had to be modified. ... Further modifications of launch vehicles derived from rocket R-7 were made by the Central Specialized Design Office (D. I. Kozlov) to which all documentation on the R-7 derived rockets was passed on. ... SEA LAUNCH . LAND LAUNCH | ... Official WEB-site of S.P.Korolev RSC Energia . ...

. Main . Final stage of OC "MIR" flight . Photoarchives . RUSSIAN AVIATION AND SPACE AGENCY . CENTRAL SCIENTIFIC RESEARCH . MACHINE BUILDING INSTITUTE . MISSION CONTROL CENTER . Russian . Earth Orbiting Complex "Mir" . The material submitted to the UNO Science and Engineering Subcommittee 38 session on peaceful use of space (Vienna 12-13 Feb 2001) as an oficial UNO document . Press-conference at MCC February 28, 2001, U.N. Koptev

As announced by the IAU Central Bureau for Astronomical Telegrams in Circular No. 9004 on 11 December 2008, Bulletin C36 of the International Earth Rotation and Reference Systems Service announced that a positive leap second will be added on 1 January 2009. ... Bulletin C is mailed every six months, either to announce a time step in UTC or to confirm that there will be no time step at the next possible date. Daniel GAMBIS Head Earth Orientation Center of IERS Observatoire de Paris, France ...

July 19, 1998 . ... An example of the EUV large-scale chain revealed by the modified TRACE EUV images. The TRACE EUV (171 A) image of July 19, 1998 with a number of complicated chains and threads. In particular, an "8"-like structure appear to be present at the central area of the disc restricted by points 1-2-3-4. Some fragments of this structure consist of the two parallel threads. ... Back to the page of the TRACE chains . Back to the parent page . Last update: 9 August 1998 . ...

The Calendar of Bloody A.tecs. Living in Central Mexico from the XII century to the being of the XVI century warlike A.tecs devoted much time to sciences including astronomy. For needs of agriculture A.tecs, using the knowledge received from the forecomers, developed the exact calendar system. 52 years of the moon-and-the sun cycle formed the basis of it (something like our conception of "a century"). ... A.tecs year was divided into 18 months with 20 days each. ... Mesopotamian astronomy. ...

... Specialists from the TESIS Control Centre, at the FIAN Laboratory of Solar X-ray Astronomy, have succeeded in fixing a malfunction in one of the observatory's central telescopes, which occurred in the second half of May. ... The main version of events pointed to a malfunction in the drive mechanism's reducer, which is responsible for the rotational power from the main shaft of the motor to its output shaft, which is connected to the shutter. ... The TESIS observatory © TESIS: www.tesis.lebedev.ru . ...

... Salyut-7 . ... Salyut-3/5 (Almaz) . ... Salyut-6/7 with . ... Proton with Salyut-2 . Inside Salyut-6 . Salyut-6 trainer . Central control post. Hatch to the transfer compartment is also visible. Note: left part of the control panel is an exact copy of Soyuz panel. ... Backward view from the very front of working compartment. Extendable shower (see below) is seen in upper left corner. ... Extendable shower . ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

STARTEST IMAGES GALLERY . Type: Maksutov Cassegrain . ... Inside Focus . ... Outside Focus . ... These is are the startest images of two alike 6"F/10 Maksutov Cassegrain?s. The central obstruction on these images is slightly larger than in the reality. ... Another rather easy done simulation for the second image from the left in the second table with images. ... Also the middle-ring is brighter in the simulation according to the PSF?s , this is however not so clear when you look at the images. ...