... The HDF Project. ... How to obtain the data catalogs. Observing logs and ancillary information. Technical information on the data reduction pipeline. Technical information on image registration and combination. Technical information on source detection and photometry. HDF Clearinghouse -- followup observations and analysis. ... Hubble Deep Field Academy -- Educational Resource for Middle School students . Hubble Deep Field South The Space Telescope Science Institute home page . ...

... ОТЧЕТЫ СТУДЕНТОВ О ПРАКТИКЕ В САО . Лето 2001 года . ОТЧЕТ . ... Золотухина Ивана . ... 0.07 . ...

... Солнце . ...

Next: BVR light curve (Della Up: Optical light curves Previous: Optical light curves . ... 1=J.D. 2=U, mag 3=U-err, mag # 4=B, mag 5=B-err, mag # 6=V, mag 7=V-err, mag # 8=R, mag 9=R-err, mag # 10=I, mag 11=I-err, mag 12=B-V, mag # 13=B,LF 14=B-err,LF # 15=V,LF 16=V-err,LF # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2448290.18 10000 0.01 14.38 0.16 14.05 0.05 14.13± 0.22 00.01 0000 0.33 -10.96077 0.064 -11.11061 0.02 2448291.22 10000 0.01 14.23 0.08 13.82 0.10 13.77± 0.05 13.39 ...

Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... The average annual indices of sunspot activity . Visual indices of solar activity by National Geophysical Data Center . ... 0.06 . ...

... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...

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. ...

Next: Results and discussion Up: Observations and data reduction Previous: Reduction of photometric data . ... Since HS 0822+3542 had a known optical redshift, we split the 1024-channel autocorrelator in two halves and used a dual-polarization receiver to increase the S/N ratio. ... 0.077 0.005 . ... 0.004 0.003 . ... 0.005 0.004 . ... 0.005 0.04 . ... 0.49 0.03 . ... Next: Results and discussion Up: Observations and data reduction Previous: Reduction of photometric data Labaratory "Structure" . ...

Optical and UV Spectrophotometric Standard Stars . ... Two papers detail the observations: the first is devoted to wavelengths from 3300 to 7550A (Hamuy et al., ... -------------------------------------------------------- 718 Xi2 Cet B9 III -O.107 -0.056 4.279 -0.023 -0.063 1544 Pi2 Ori Al V 0.01 4.355 0.014 0.039 3454 Eta Hya B3 V -0.743 -0.200 4.295 -0.083 -0.200 4468 Theta Crt B9.5 V -0.18 -0.07 4.700 -O.023 -0.063 4963 ...

... Optical photometric data were taken of fields encompassing all these sources during a total of seven telescope runs. ... The initial goal of the photometric observations is to follow up the X--ray sources, assign them colors in a standard system, so that the observed objects can be placed on a color--magnitude diagram. This can be used to verify that the X--ray sources are indeed PMS stars. ... Aperture photometry was performed using the APPHOT package in IRAF. ...

... We thank the Swift team for their rapid scheduling of this observation. ... 2455705.20851 V 14.15 0.03 2455707.83079 V 14.10 0.03 2455710.84028 V 13.53 0.02 2455713.64631 V 13.66 0.02 2455714.65479 V 14.11 0.03 2455714.71823 V 14.12 0.02 2455714.78596 V 14.20 0.02 2455717.39593 V 14.37 0.03 2455726.62861 V 14.83 0.04 2455727.16343 V 14.57 0.04 2455730.50586 V 14.57 0.03 2455730.57329 V 14.56 0.03 2455730.70360 V 14.66 0.04 2455738.32865 V 14.00 0.02 2455742.86146 V 14.21 ...

... 2003) RX J1856.5­3754 Black-body fit No narrow absorption features ! Chandra LETGS XMM EPIC-pn Photon Energy (keV) Spectrum constant over time scales of years Haberl (2006) A `stable` neutron star Model : tbabs*bbody Simultaneous fit with all parameters linked except norm: 1.000 1.008 0.995 0.983 0.989 · 5 observations in FF mode + thin1 filter · 1 observation in timing mode + thin1 filter ± ± ± ± 0.005 0.005 0.005 (*) 0.004 (*) 69 intervals in STDGTI extension Cross ...

... (FIRPO-TIRGO) w/error AR, Sun Aug 24 10:34:33 MET DST 1997 ############################################################# Sp:K4 irc10007 J 1.509 0.028 irc10007 J 1.65+/- 0.06 [ 0.05 ] 0.14 0.09 irc10007 H 0.961 0.006 irc10007 H 1.03+/- 0.04 [ 0.04 ] 0.07 0.05 irc10007 K 0.606 0.040 irc10007 K 0.85+/- 0.05 [ 0.03 ] 0.24 0.09 Sp:M2 irc10024 J 2.099 0.028 irc10024 J 2.31+/- 0.04 [ ...

We present quasi-simultaneous multi-colour optical/near-IR photometry for 157 radio selected quasars, forming an unbiassed sub-sample of the Parkes Flat-Spectrum Sample. ... The spectral energy distributions of the radio- and optically-selected sources are quite different. ... We show that the colours of our red quasars lie close to the stellar locus in the optical: they will be hard to identify in surveys such as the Sloan Digital Sky Survey. ...

To main of Laboratory . The research work and design of optical and optical-electronic devices are carries out by laboratory staff: . ... Lens: . ... In the layout 1 prism systems perform functions of dispersive element, corrector of aberrations, optical reducer. ... Spectral range 200 - 400 nm; . ... Back Forward . ... The main corrector's function are compensation of field aberrations of the main spherical mirror of a telescope (diameter of 600 mm, f'=1200 mm) and increase aperture ratio. ...

Wide-angle telescopes for photometry and polarimetry in optical and infrared ranges . ... Investigation of the Earth’s atmosphere, comets, interplanetary and interstellar medium with brightness and linear polarization measurements of extended sources and sky background in optical and infrared spectral ranges. ... The devices are small diameter telescopes with CCD-detectors for optical and infrared spectral range with spectral and polarization filters. ... 15-cm telescope with cooling down to 80 K . ...

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... Plastic forming and welding of optical elements for laser technologies and optical telecommunications. A set of technological processes of manufacturing of optical elements with sophisticated profiles for laser technologies and optical telecommunications has been developed in the Institute of Solid State Physics . ... тАв€а to form optical surfaces with non-spherical and rather sophisticated profiles, improving essentially effectiveness of laser technologies and optical telecommunications; . ...

The Navy Prototype Optical Interferometer . Articles | ... John Huggins, October 1, 1998 . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...