... HST . ... Data . ... HST Overview . Overview . ... Retrieving HST Data . ... This FORM is a quick tool for flux conversion between diverse unit systems. ... INPUT FLUX or MAGNITUDE UNITS CLEAR Jy W/m2/Hz W/m2/um W/cm2/um erg/cm2/s/Hz erg/cm2/s/A photons/m2/w/um photons/cm2/s/A AB magnitude magnitude V magnitude U magnitude B magnitude R magnitude I magnitude J magnitude H magnitude K magnitude L magnitude L1 magnitude M magnitude N magnitude Q . ... Enter the Input Flux or Magnitude Value : . ...

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• Target Count Rates
• ACS Instrument Handbook
• ACS Instrument Handbook for Cycle 20

... Files . ... File List . File Members . casa . Quanta . ... National Radio Astronomy Observatory 00023 //# 520 Edgemont Road 00024 //# Charlottesville, VA 22903-2475 USA 00025 //# 00026 //# $Id: UnitName.h 20551 2009-03-25 00:11:33Z Malte.Marquarding $ 00027 00028 #ifndef CASA _ UNITNAME _H 00029 #define CASA _ UNITNAME _H 00030 00031 00032 //# Includes 00033 #include casa /aips.h 00034 #include casa /BasicSL/String.h 00035 #include casa / Quanta / ...

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• casacore: casa/Quanta/UnitDim.h Source File
• casacore: tables/Tables/ExprUnitNode.h Source File
• casacore: casa/Quanta/QBase.h Source File

... College . Astronomy . ... In 1950, about 500,000 college degrees were awarded in the country (432,000 bachelors, 58,000 masters, 6,000 PhD's). ... In 1997, according to the U.S. Dept of Education, about 15 million students were enrolled in some institution of higher education, from community college to research university. ... We have three levels of higher education in our state: the elite University of California at the top and the extensive system of over 100 community colleges at the bottom. ...

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• ASP: Planetaria
• ASP: Clubs and Organizations

... 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...

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• http://www.mrao.cam.ac.uk/ALLSMOG/Data_download/tab3.txt
• James Gordon - Research

... ESO, the European Southern Observatory . ... Member States . ... United Kingdom . ... Survey Telescopes . ... Images . ... Usage of ESO Images and Videos . ... Usage of ESO Videos and Images . ... VLT Unit Telescopes Names . ... ESO 3.6-metre telescope . ... Astronomy Communication Resources . ... This SIMBA image is centered on IRAS 17271-3439 and includes an extended bright source that is associated with several compact HII regions as well as a cluster of weaker sources. ... IRAS 17271-3439 . ...

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• SIMBA image of the infrared source IRAS 18434-0242 | ESO United States
• SIMBA image of the infrared source IRAS 17175-3544 | ESO United States
• Sub-Millimetre Image of a Stellar Cradle | ESO United States

... 1 SRCNUM none . 2 XPOS pixels x-coordinate of centroided source centre . ... 5 RATE counts/sec Total measured source counts (after background subtraction) within default source extraction aperture (r=12 un-binned pixels), divided by exposure time. 6 RATE_ERR counts/sec . ... Point-sources (EFLAG=1) will have this value set to zero. ... For example, a source with a bad pixel and lying on or close to a read-out streak would have bits 0 and 1 set and thus have a quality flag value of 3. ...

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• Input
• Input Files
• Parameters

... The models provided are: . abs - absorption of x-rays by neutral gas with solar abundances. parameter 1 = . ... parameter 2 = . ... normalization - logarithmic value of the flux density at 1 keV in units of keV cm -2 s -1 keV -1 . ... normalization - logarithmic value of the normalization of the gaussian in units of keV cm -2 s -1 . ... absorption ( params )* model ( params ) . ... A single value for the normalization (i.e., fixed normalization) will force the program to use that value. ...

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• *tvimcontour* - Overlay contours and/or source positions on the display
• The AstroStat Slog units
• The AstroStat Slog Blog Archive keV vs keV [Eqn]

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . FileљList . ... python . tcc . axis . kwDict . ... 4 љ help = "Text message" , . ... 28 љ Float(help= "position" , units= "deg" ), . 29 љ Float(help= "velocity" , units= "deg/s" ), . 30 љ Float(help= "time (tai)" , units= "s" ), . 31 љ Float(help= "posErr" , units= "deg" ), . 32 љ Float(help= "velErr" , units= "s" ), . ... 36 љ Float(help= "max error" , units= "deg" ), . 37 љ Float(help= "average error" , units= "deg" ), . ...

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• lsst.tcc: python/tcc/base/testUtils.py Source File
• lsst.tcc: include/tcc/basics.h Source File
• lsst.tcc: include/tcc/instPos.h Source File

... Phone : (551) 7706147 . Fax : (551) 7706146 . ... Cumberland, Rhode Island 02864-5361 United States . ... Coolwell Co Inc . ... Fairfield, New Jersey 07004-3221 United States . ... San Diego, California 92126-4850 United States . ... Rockaway, New Jersey 07866 United States . ... Bozeman, Montana 59771 United States . ... Chelmsford, Massachusetts 01824 United States . ... 5645-E General Washington Dr. Alexandria, Virginia 22312 United States . ... Santa Clara, California 95054 United States . ...

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• Physical Constants and Astronomical Data
• The ROSAT All-Sky Survey Faint Source Catalogue
• The Effelsberg 11 cm Survey

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

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• SAO RAS - Telescopes - BTA - MSS

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

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• TELEVISION CAMERA TVC

. R=4.7k-10 kOhm . Ca=Cc=2*Cb . Cb=Cd=1/(2*sqr(2)*pi*Fc*R) . Units: R [Ohm], Cx [F], Fc [Hz] . Contributor: Joakim жgren . Source: . ? . Copyright The Hardware Book Team 1996-2001. May be copied and redistributed, partially or in whole, as appropriate. Document last modified: 2001-06-07

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• HwB: Active Filter: Butterworth 6dB Highpass (Offline)
• HwB: Active Filter: Butterworth 12dB Highpass (Offline)
• HwB: Active Filter: Bessel 24dB Highpass (Offline)

... The filter "Lighting Effects" is a freebie that came with this program, and in my opinion is practically worth the whole purchase price all by itself. ... You can select different light sources, and combine them with texture channels to warp your image. ... Depending on how you use it, pure white is the highest point on the image, and black the lowest. ... You can adjust the brightness and spread here, or choose other types of lighting. ... Use these if your image is turning out too dark or light. ...

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• A Plea for Support of the Space Program
• APOD: June 17, 1996 - The United States at Night
• APOD: August 30, 1997 - The United States at Night

... 1 erg = 0.1 microjoules . 1 Jansky = 10**-26 watts per metre square per hertz . 1 Angstrom = 0.1 nanometres . ... 1 Astronomical unit = 1.4960 times 10**11 m . ... Mass of Sun = 1.989 times 10**30 kg . ... Mass of the Earth = 5.976 times 10**24 kg . Mass of Jupiter = 318 times mass of Earth . Solar constant = 1.37 kW per metre . c= 3 times 10**8 metres per second . ... Mass of Proton = 1836.1 times mass of electron . ... Stefan Boltzmann constant = 5.67 times 10**-8 W m**-2 K**-4 . ...

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• Observational Techniques: Units and Coordinates Notes
• Key formulae
• pynifs.nifscube

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... This listing's details have proven difficult to confirm. See many more Astronomy Listings by: Category or Alphabet . ... Listed Since July 09, 2001 . ... Web Site . ... Web . www.astronomy.net . About 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 ...

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• Astronomy articles, forums, listings, and other resources about Astronomy.
• United Astronomy Clubs of New Jersey, Inc., AstroGuide Listing
• United Kingdom Infrared Telescope - UKIRT, AstroGuide Listing

Journals This page contains links to servers for professional astronomy and astronomy-related journals. ApJ - The Astrophysical Journal . ApJ Online - The Astrophysical Journal Online . ApJS - The Astrophysical Journal Supplement . AJ - The Astronomical Journal . ... 1995-1999 Irish Astronomical Journal, Downshay, 12 Heather Lea Avenue, Dore, Sheffield S17 3DJ, S. Yorkshire, United Kingdom . WWW Contact: Alastair G Gunn Back to IAJ Home Page ...

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• Abstract
• IAJ: Resources: Software
• IAJ: Resources: Vacancies

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... From its introduction in 1992, the LX200 has always been a product for which all others compared to. ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... Coronado€о Solar . SolarMax II Solar Telescopes . ... Double Stacking Units . ... Coronado Accessories . ...

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• Meade Series 4000 Broadband Nebular Filters

.

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• Geology Materials
• Physics 161: Winter 1999 Physics 161: Energy and The Environment Fall 1999
• Fossil Fuel Primer

... The IVOA Data Access Layer (DAL) working group is defining a Simple Spectral Access (SSA) protocol for accessing 1D spectra and SEDs. ... The survey consists of two parts. ... Elodie: 25000 extracted Echelle spectra, resolution 42000, 4000 - 6800 ? ... ISO 1D Spectral Data: 10000 files, 2.4-197 micron, resolution 40-30000 . ... XMM-Newton 1D Spectral Data: XMM/RGS, 20000 spectra (expected), 0.35-2.5 keV, resolution 200-800; XMM/EPIC, 1.5 mio. spectra (expected), 0.35-15 keV, resolution 20-50 . ...

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• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• QPSIM: An IRAF/PROS Tool for Source Simulation
• An Extragalactic Point Source Simulator for SIRTF Pipeline Testing

SIMPLE = T / file does conform to FITS standard BITPIX = 8 / number of bits per data pixel NAXIS = 0 / number of data axes EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A .. ... IMAGEW = 4256 / image width IMAGEH = 2832 / image height ANRUN = T / Solve this field! ...

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• http://www.astro.louisville.edu/shared_skies/archive/select/stars/pegasus/enif/20101007/nikon_1286507318_enif.match
• http://www.astro.louisville.edu/shared_skies/archive/select/dwarf_planets/pluto/20120530/astrometry/pluto_R_20120530_00149dfw.match
• http://www.astro.louisville.edu/software/sbig/archive/xmccd-4.1/xmccd-4.1e/libcfitsio/libcfitsio-3.310/cfitsio.toc