. Next: Unit Conversion Up: Calibration Previous: Brightness Units . Sometime the nominal Tsys measurement at the telescope is wrong due to an incorrect noise diode calibration. This can easily be corrected for with the scale function. By default, scale only scans the spectra and not the corresponding Tsys. ASAP> scans.scale(1.05, tsys=True) . Malte Marquarding 2005-11-30

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... are preliminary IAU-style names for ChaMP objects. Finalization of names awaits the final systematization of optical coordinates and source identification. ... The yellow regions highlight atmospheric telluric bands at ~6900A and ~7600A. The optical ID, X-ray ID, classification, and redshift are given at the top of each plot, and a series of lines are shown that are often found in sources of that given classification. ... HS limit? ... g' band magnitude; calibrated SExtractor Kron mag or limit . ...

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• Notes on IPC and PSPC Spectral Fitting
• The AstroStat Slog Blog Archive [Q] systematic error
• The Lynxx Tools

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Equatorial coronal hole (top left), polar CH (top right), quiet Sun (bottom left) and quiet Sun with TCHs (bottom right) with the positions of all the corresponding identified brightening pixels over-plotted. ... We found that in comparison to the quiet Sun, the boundaries of coronal holes are abundant with brightening events including areas inside the coronal holes where closed magnetic field structures are present. ...

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• CONCLUSION (2)
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• Stellar spectroscopy

Fabry-Perot data cubes. Introduction: what is "data cubes"? Observations with the IFP consist of successive acquisition of a few dozen images of interference rings from the object (or from a calibration lamp) when changing the optical path between the flat-parallel plates. The radius of the rings is a function of wavelength and gap between the plates of the interferometer. ... Its interference rings of Ne line which use for phase calibration (convert object data to wavelength-scale). ...

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• Application-specific functions
• di_eks
• Observational data and reduction

... The IUE high dispersion spectra available in NEWSIPS format of IUE final archive can not be directly analyzed in IRAF. ... We describe the process of obtaining the data, converting it to IRAF format, echelle orders merging, and continuum fitting up to the measurements of radial velocity of selected resonance lines. ... For that purpose the best way is taking the NEWSIPS absolutely calibrated data available as MXHI (high dispersion) and MXLO (low dispersion) files of IUE Final Archive. ...

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• The ISOPHOT Interactive Analysis PIA, a Calibration and Scientific Analysis...
• The Basic Calibrated Data Processing Pipeline for SIRTF IRS
• ADASS 2002 Conference Proceedings

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• Using Apache With RPM Based Systems (Redhat / CentOS / Fedora) - Apache HTTP
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• Procedures for Data Reduction

... Corresponding authors will receive an e-mail with a PDF file of paged proof for checking and correction. The file can be read and edited using Adobe Acrobat Reader (version 9 and higher) which can be free downloaded via the Internet ( http://get.adobe.c om/reader/ ). ... You can use text correction tools to make corrections (after selecting the necessary text fragment). ... For users of Adobe Reader 9: . ... to insert text without replacing the existing text, use the "Insert text at cursor" tool. ...

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• Sun image

. N OTE: . Only clusters with R<60 kpc were used to compute the spatial parameters and metallicity gradients for all subsystems except the corona. The numbers in parantheses give the number of clusters for which the corresponding parameter is known. The X O scale length of the old halo is strongly distorted by the observed asymmetry of the distribution of the corresponding clusters projected onto the XY plane ( Fig. 4А ) . discussion in the text | previous table .

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• Mid Scales Role
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• INVESTIGATION OF JOINT EFFECT OF TWO

... This function can also be used for particular types of subtypes or kinds: KIND (0) integer KIND (0.0) floating point number KIND (.FALSE.) logical variable KIND ("A") string of characters There is an intrinsic function SELECTED_REAL_KIND , which returns the kind of the type REAL that has a representation with (at least) the precision and the exponential range requested. ... With the choice SELECTED_INT_KIND (5) all integers between (but not including the limits) -100 000 and +100 000 are permitted. ...

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• Notation
• The Chirplet Transform: Physical Considerations
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Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... StelToneReproducer Class Reference . ... Set the eye adaptation luminance for the display (and precompute what can be) Usual luminance range is 1-100 cd/m^2 for a CRT screen. ... Set the eye adaptation luminance for the world (and precompute what can be) More... љ . ... Return adapted luminance from world to display. ... Return adapted luminance from world to display with 1 corresponding to full display white. ... xyYToRGB (float *xyY) const . ...

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MAKING THE PROFILES . First of all you are expected to load a FITS file ("FILE"-"LOAD"). ... By pressing the middle button you copy the profile from the first profile window to the second one. ... An example: first integral can correspond to the profile of active region and second integral can correspond to the profile of quiet chromospheric region. ... The second profile (which is subtracted from the first one) you extract after clicking on "SUBTRACT"-"MARK QUIET PROFILE" and marking the region. ...

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• ji0010

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...

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... About 10% of the time is allocated to moving the telescope to the zenith and exchanging the spectrographic cartridges. ... Focus telescope (open-loop)* . ... TOTAL TIME (seconds) . ... This assumes two 60 second arc exposures and two 55 second readouts. ... Otherwise, the arc exposure will likely consist of a 30 second integration followed by a quick 28 second readout, half the normal time. ... The flat-field exposure can be read out with a quick 28 second readout, half the normal time. ...

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• Tilt and Sag Coefficients: 14 Apr 2000
• Tracking error budget
• lsst.coordConv: coordConv::Site Class Reference

... Particle distribution: dN d - with =1- ln pcn ln g Electron-photon conversion e + _ + _ electron _ e e electron/ positron high- energy photon e+ positron -25 cm cross-section, 10 8 6 4 2 0.5 1.0 center-of-momentum energy , MeV (log scale) 2 e + _ Proton-neutron conversion cm cross-section, 10 proton u +2/3 2 -28 d -1/3 6 u +2/3 4 resonance _ u d d+1/3 -1/3 d u+2/3 +2/3 -1/3 2 150 340 center-of-momentum ... Does the peak (cut-off) energy decrease with observation angle? Not always. ...

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• RTT150 Technical Description
• Пширков Максим Сергеевич (ПРАО АКЦ ФИАН)
• Титарчук Лев Григорьевич (NRL)

... OXIDIZED AND HYDRATED SILICATES ON M- AND S- ASTEROIDS: SPECTRAL INDICATIONS. ... In particular, it was shown that a considerable fraction (ab. 35%) of the mainbelt M-type asteroids have absorption bands at 3 µm [3, 6] diagnostic of water of hydration. At the same time it was found that the visible-range reflectance spectra of some M- and Sasteroids include absorption features characterizing presence of oxidized silicates [4, 5]. ... The reflectance spectra of 161 Athor (Fig. 1), 497 Iva (Fig. ...

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• http://selena.sai.msu.ru/Shev/Publications/ms38/ms083.pdf
• http://selena.sai.msu.ru/Bus/Publications/UFN2007(Bus_etal)(engl).PDF
• http://selena.sai.msu.ru/Bus/Publications/SSR-05(Prok-Boch-Bus).pdf

The Planewave Instruments 20-inch (0.5-meter) f/6.8 corrected Dall-Kirkham telescope at Moore Observatory in Kentucky and its identical companion at Mt. ... The CDK20 North at Moore Observatory has been our primary platform for developing technology for remote and robotic operation in the Shared Skies program. ... g'r'z'i' filter wheel . ... Axis quad video server to send realtime video to the remote observer . ... Telescope monitor camera in the dome also on the video server . ...

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• Shared Skies Photo Gallery
• API Help (ImageJ API)
• University of Louisville Moore Observatory

... Saturn from Above . ... This image of Saturn could not have been taken from Earth. ... Since Earth is much closer to the Sun than Saturn, only the day side of the ringed planet is visible from the Earth. Three Galaxies and a Comet . ... Sh2 155: The Cave Nebula . ... Venus, Zodiacal Light, and the Galactic Center . ... The Great Carina Nebula . ... Hale Bopp: The Great Comet of 1997 . ... Sixteen years ago, Comet Hale-Bopp rounded the Sun and offered a dazzling spectacle in planet Earth's night. ...

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• PG 1115+080: A Gravitational Cloverleaf
• Астронет > PG 1115+080: A Gravitational Cloverleaf

Blackholes2 Forum Message . ... Clarification . ... You seem to differentiate between the destruction of matter and the conversion of it into energy, for wjich I presume you assume it is not destroyed. ... However, there is one place in the universe where the matter/energy conservation may not hold up. ... The white hole is not part of our universe, being a new spacetime that then expands in a big bang into a new universe that presumably becomes similar ours in size and energy. ... www.astronomy.net . ...

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• Re: Catalog Conversion Utility - an Astronomy Net XEphem Forum Message
• Conversion Of A Vintage 7x50 Binocular To A 18x90 Binocular - an Astronomy Net
• Catalog Conversion Utility - an Astronomy Net XEphem Forum Message

... FTP access the basic models is here . ... Below, we put short descriptions of the used SED models for the photometric redshifts providing by the current server . ... The uniqueness of this model consists in expanding to the near IR (NIR) of Rocca-Volmerange and Guiderdoni's (1988) atlas of synthetic spectra with a revised stellar library, which includes parameters of cool stars. ... Homepage of the GISSEL model). ... Another model used earlier is the model of synthetic spectra of Poggianti (1997). ...

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• To gravitational wave discovery with LIGO

... We can help students grasp the significance of Hubble's extremely keen eye, and learn a bit about angles and math in the process, with the following in-class activity. ... Looking through binoculars or telescopes allows us to magnify a small section of the sky. To measure sizes or distances in that small section, astronomers divide a degree into 60 smaller pieces called arcminutes, and further subdivide minutes into 60 smaller sections called arcseconds. ... 30 feet = . ... 36 seconds . ...

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• ASP: Family ASTRO: Night Sky Adventure
• ASP: Family ASTRO: Race to the Planets
• ASP: Good Astronomy Activities on the WWW