... Discussions about options for introducing polarizing optics to the high resolution spectrometer NES, recently developed at the 6m telescope by V.Panchuk, have also been held. ... A strong double-peaked emission in the H-alpha line was found in 1985 and explained in terms of a rotating equatorial disk model, first proposed by Jones et al. (1993) for this object. ... Based on high resolution optical spectra we obtained in 1995, the effective temperature Teff=8500K has been estimated for IRC+10420. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... New engineering model of the feed system is under development now. ... Appendix (The list of used acronyms) ASC Cold Plate DC Astro Space Center of Lebedev Physical Instutute cooled LNAs and antenna feed hermetic device container (part of payload); it contains Formatter, Rb oscillators, synthesizer, control unit and is placed under dish DM Device Module = DC + H-maser EGSE Electronic Ground Support Equipment Electronic Complex ­ all SRT electronics EM Engineering Model FC Focal ...

... Watchouts . ... Any XMM-Newton users, who need to convert OM count rates in the optical and UV filters into fluxes (expressed, e.g. , in erg/cm/cm/s/A), can do it by following any of the methods we outline below. OM count rates can be obtained with SAS. ... UVW1 . ... UVM2 . ... convert from count rate, obtained with SAS (files *SWSRLI*, corrected count rate in CORR_RATE column), to flux, selecting the most appropriate factor for the chosen spectral type and filter from the following Tables: . ...

... II 9 Install internal baffles 17 Measure 2ry translation 19 Test 2ry support forces 20 Install 1ry support servo 21 Measure 1ry translation 22 Test 1ry support forces 23 Test 1ry support servo 24 Complete installation of wind ­ baffle servos 41 Measure wind ­ baffle friction 47 Test axis limits 61 Test wind ­ baffle bumpers 48 Model as­built optical system 27 ...

... Experimental base . ... The experimental base of the investigations is the topside sounding data obtained on board of the Intercosmos-19 and Cosmos-1809 satellites. ... It carried on board the following scientific payload: satellite ionospheric station for radio sounding of ionosphere (IS-338) and apparatus for the measurements of low-frequency electromagnetic field (VLF-2ME), electric component of high-frequency field (AHF-2K), electron temperature (KM-3), and spectrometer of photoelectrons (SF3-M)...

... Thermal Mars . ... Credit: TES Team , MGS , JPL , NASA Explanation: It's 2 AM on Mars and surface temperatures range from -65C to -120C, as measured by the Thermal Emission Spectrometer (TES) onboard the Mars Global Surveyor spacecraft. ... Near Mars' equator, the variations in nighttime temperatures are related to surface materials. ... Публикации с ключевыми словами: Mars - temperature - Марс - температура . Публикации со словами: Mars - temperature - Марс - температура . ... Вид на Марс . ...

... Luminosity (L) · · · · A source's luminosity is the power that it emits in radiation. ... NB Astronomers often say `flux' when they mean `flux density' · SI units are Wm-2Hz -1 -26 filter · Also used are Jy 10 Wm-2Hz -1 E= РРРF d dA dt Specific Intensity, Surface Brightness (I) · Specific intensity (or surface brightness) is the power received (or emitted) per unit area per unit frequency per unit solid angle. ч F at surface of a spherical source = I · · Specific intensity is independent of distance...

... SMIS ] . noise temperature of the low noise amplifier less than 100 K . automatic frequency and polarization adjustment of the received signal . double transform of frequency . power supply: single phase, 220 V, 50 Hz . power consumption: less than 30 Wt . the unit measures: 470 x 300 x 130 mm . weight: less than 10 kg . ... Back to SMIS Home Page . ...

... 2000 October 19 . The Farthest Explosion Yet Measured . ... What is known is that satellites across our Solar System reported on 2000 January 31 a tremendous explosion of gamma rays had occurred towards some previously uninteresting direction. ... The VLT not only recorded an optical counterpart , shown above , but also was able to estimate that the cosmologically-induced redshift was an astonishing 4.5 -- placing GRB000131 farther across the universe than any explosion so measured. ...

... Using the uvby -photometry and proper motion data for about 5500 F stars within 80 pc from the Sun, we have studied velocity ellipsoid parameters and obtained the following results. 1) The sizw of all wllipsoid semiaxes increase systematically for groups of stars with the decrease of both temperature (at constant metallicity) and metallicity (at constant temperature). ... As a result, each of the three parameters - temperature, metallicity and velocity dispersion - is an age indicator. ...

AUTOMATIC STATION OF ECOLOGICAL CONTROL . ... BASIC PERFORMANCE SPECIFICATION . STATE OF ASEC DEVELOPMENT . AIR POLLUTION MONITORING . ... OF MEASURING CHANNELS . ... unit of measurement . ... Nitric oxide (NO) concentration, . ... power measured by ASEC . ... In particular, RSC Energia finalizes its work on measurement systems designed to measure dust, volumetric activity of radioactive gases and aerosols and other environmental parameters. ... Official WEB-site of S.P.Korolev RSC Energia . ...

. I will briefly summarise the methods to estimate the magnetic field strengths of different types of neutron stars and the caveats associated with them. In this context I will present some recent results we have obtained in finding the limits to the field strengths of accreting millisecond X-ray pulsars from the interaction between the accretion disk and neutron star magnetosphere.

... You must have the frames with a dark current and flat field for preliminary processing of the images. ... The flat field is necessary for the account of the variations in the sensitivity of pixels. ... 1) Open the frame with a flat field by . ... In the dialogue choose a frame with a dark current. There will be a subtraction of the dark frame from the flat field. ... 3) Apply the flat field by . Note  If several files are open, a dark current and flat field will apply for all. ...

Establishment and Observation of Space Debris Laser Ranging Zhang Zhongping, Zhang Haifeng, Wu Zhibo, Li Pu, Meng Wendong, Chen Juping, Chen WanZhen Shanghai Observatory, Chinese Academy of Sciences Contents: Introduction Establishment of laser ranging to space debris system Observation results Summary Introduction Large amount of space debris around the earth currently. ... Laser ranging (LR) is a kind of real-time measuring technology with meter or sub-meter precision for space-debris observation. ...