... In this case, because polarimetry is not currently possible with the 3-mm system, only task mfcal is needed to perform bandpass and antenna calibration. ... This section outlines an alternative calibration approach exploiting the dual frequency bands of the ATCA. ... Unlike the approach of Chapter 11 , the approach described here does not split the data into separate single source, single frequency files before calibration. ... Input multi-source, dual-band dataset. select=source(1921-293) . ...

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• An alternative approach to calibration

The following files list line and continuum emissivities from the Arcetri Spectral Code. ... Ne = 10^8 g-zipped file (phot cm^3 s^-1); Ne = 10^8 g-zipped file (erg cm^3 s-1) . ... File format (html): File format for the continuum files . ... File format (html): File format for binned line emission files The following files list transitions whose emissivities have values greater than a fixed amount (10^-19 phot s^-1 cm^+3 and 10^-30 erg s^-1 cm^+3 respectively): . ...

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• Star Formation Group of the Arcetri Astrophysical Observatory

... The first of the equations defines the position of the spectral orders, m , in the raw image, while the second equation gives, for each order, the dispersion relation in one dimension. ... where the coefficients are computed using least squares techniques on a grid , i.e. sample number and line number of points located within the spectral orders of the image. These points in the grid are found automatically by an order--following algorithm, normally using the FLAT or STD image. ...

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• Averaging and Merging Frames
• HyperLEDA: documentation
• HYPERLEDA Help

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. ...

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• The 2175? feature

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

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• Old Calibration Data

... Team . ... The main goal of observations of GRB host galaxies is accumulation of statistics of their spectroscopic and photometric properties. ... The Hubble diagram for 22 GRB host galaxies with known magnitudes and redshifts (GRB 970228, GRB 970508, GRB 970828, GRB 971214, GRB 980613, GRB 980703, GRB 990123, GRB 990510, GRB 990712, GRB 9912008, GRB 991216, GRB 000131, GRB 000210, GRB 000301C, GRB 000418, GRB 000911, GRB 000926, GRB 001109, GRB 010222, GRB 010921, GRB 011121 and GRB011211). ... 600...

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• RESEARCH PROBLEMS of the LRS
• Optimization of spectroscopic observations
• Fabry-Perot Interferometer: Data cubes

... sas (gui-1.37.5) [?? Meta Index / Home Page / Developer's notes / Layout file . It is recommended that the following guidelines are followed when developing tasks for use with the GUI: . Use the special parameter types which are available (see documentation of the param package), so that the GUI can use appropriate widgets. ... Use tab cards to organize a complex dialog into a set of pages. ... Use labeled frames to group together a set of related parameters, with a label. ...

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• SciSim Release Track
• Dealing with MOS1 data in Timing Mode
• Description

... Information about a variety of different calendars for different cultures (e.g., Christian, Jewish, Muslim, Chinese, Hindu etc.) ... In addition, the Chinese had two different ways of interpreting and observing celestial events. One way the Chinese used astronomy was known as lifa; it was a discipline that aimed to understand the regularities and the predictable events in the celestial system through careful, observations, measurements and records. ... back to Teachers' Newsletter Main Page ...

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• ASP: A Flag for Mars
• ASP: Stellar Evolution (a la Chez Stella)
• ASP: Light Pollution

... European Remote Sensing Satellite (ERS-1) was launched on 17 July 1991, and the follow mission ERS-2 (with the same sensors and an Ozone monitoring instrument added) was launched on 21 April 1995. ... ERS-2 has a fixed repeat cycle of 35 days, and follows ERS-1 tracks with one day's delay. ... Swath width is 102.5 km (telemetered), spatial resolution is about 25x25 m. The Advanced SAR (ASAR) instrument is carried by ESA's ENVISAT satellite launched on 1 March 2002. ... Swath . ... Spatial Resolution...

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• Some results from Intmins
• The Face on Mars
• Lagrangian Points

... When I display the weight map generated for my final drizzled image (or any of the single drizzled images as well), there seem to be representations of the objects in my science image. ... Most likely you need to refine the parameters that are set during the driz_cr step which detects cosmic rays in each of your science frames. ... I've calculated refined offsets between my science images but when I supply MultiDrizzle with the delta shifts the final image is not aligned properly. ...

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• http://www.stsci.edu/~borders/cgvc120/Project05_Final.pdf
• Target Identification
• WFC3 Instrument Handbook

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 21, 1999 . Follow The Spots . Credit: Louis Strous ( LMSAL ), SOHO - MDI Consortium, ESA , NASA . ... Just follow the sunspots . ... It shows the Sun's visible surface for most days of August 1999 so that the same sunspots appear many times as the solar rotation carries them across the face of the Sun . ... About APOD > . ...

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• Configuration Options
• Astronomy Picture of the Day's Educational Links
• APOD: 2007 October 19 - IC 5067 in the Pelican Nebula

These are very prominent absorption lines is most all galaxies. ... These pair of absorption lines will appear in all the spectra and they should be your principle source for determining the redshift. ... When this applet opens you will see an iconic representation of galaxies in the left hand side of the applet and a target area in the right side of the applet. ... Note: What you are doing in this excercise is identical to what Hubble did in the 1920's and you are using the same galaxies. ...

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• Fabry-Perot Images of Spiral Galaxies
• Venus and Mars
• Lecture V.

... Archives . ... If you do not mind the time predictor, it is hard to believe that this is a light curve, time dependent data. ... It?s hard to say this data set is designed for time series analysis apart from the complication in statistical inference due to measurement errors. How to design the statistical study with measurement errors, huge gaps in time, and unequal time intervals is complex and unexplored. ... The following is R output without measurement errors. ... Chandra Blog . ...

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• zhtools
• Correlating Spectral Data with Spatial Gain Variations
• A matrix of tweets from #AAS223

The preliminary version of documentation of the format for the interchange of calibrated optical/IR data being developed by Tom Pauls of NRL and John Young of COAST was presented and a number of issues discussed. The proposed format is in the general form of a relational database with different components stored in FITS binary tables. ... Should there be a single data table type that includes all data types, or multiple table types, one per data type? What data types are needed? ...

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• Limits on Phase Correction Performance Due to Differences Between Astronomical
• OptInt PmWiki : PmWiki / Custom InterMap
• OptInt PmWiki : PmWiki / Access Keys

... 430 plots . ... 430 dome . 430 rcvr dome and carriage house centered at 430 MHz. interim correlator: . ... the old optical lab (or photometer lab) is on 110V Power from Building 1. several incandescent lights . ... seq: off, off . ... seq: on . ... A dotted purple line was made where it looked like rfi was coming from this location. spectral results 430 dome, all locations vertical scale .04Tsys (.ps) ( .pdf ) . spectral results 430 dome, all locations vertical scale .2 Tsys (.ps) ( .pdf ) . ...

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• Spectral-Line Observing
• Data and Analysis
• The Mock Spectrometer

Astronomy Discussion Forums . ... Post Message | ... As all my friends know, my mouth exerts a strong pull on my foot, so that the latter often ends up inside the former. ... I grew up with the distinct feeling that I'm different from most people. ... I don't believe in blindly following authority, and I believe no one should. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• There Are Two Different Situations Here! - an Astronomy Net Blackholes Forum
• A Different Time Subject When I Was A Child. - an Astronomy Net General Forum
• Everyone Will Give You A Different Answer - an Astronomy Net Bigbang Forum

... Laboratory for Spectroscopy of Molecular Structures . ... Optics and spectroscopy of molecular and liquid crystals, fullerenes, superthin molecular films. Optical studies of structure, phase transitions, pretransitional phenomena, structural modifications in external field and under high pressure. ... Methods developed in the laboratory enable to determine in free standing films of different types liquid crystals values of polarization, two-dimensional constants of orientational elasticity. ...

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• International Astronomy Olympiad: Application to be ANRAO
• International Astronomy Olympiad: Form for the short report of National
• VII International Astronomy Olympiad: information available before

In this chapter we will consider an example of visual expert system written on the Actor Prolog language. ... There are a lot of methods of oil field bed stimulation that increase output of the oil production: thermal, physical-chemical, gas, microbiological, and others. ... Fig. ... The Top-Most diagram consists of three blocks: the "Describe parameters of hydrocarbon field" block, the "Check adaptability of existed methods of oil production" block, and the "Display solution" block. ... Gas methods. ...

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• Atmospheric influence on the different radioengineering systems functioning.
• SETI League Guest Editorial -- Transforming SETI to METI

... The instrument modes and arms should be indicated and described, and the keywords that distinguish between different modes should be indicated (usually INS.MODE is used if it is a mode and OCS keys are used in case it is related to an arm). ... Raw frames The format of the raw frames for each mode and arm should be described. ... The design should be checked on pre-processing or processing, which involves products only (no trigger via raw frames). ... QC parameters. ...

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• FORS1 Photometric System Characterization
• ESO - ESO sky correction tools
• DFS group delivery procedure

Gamma-rays from the GC . M.Chernyakova (DIAS), D.Malyshev (DIAS), F.Aharonian (DIAS, MPIK), R.M.Crocker(MPIK), D.I.Jones(MPIK) 1 10°x10° Count and TS maps (>300 GeV) Gamma-rays from the GC 2 TS maps of the GC at different energies 300 MeV ­ 3GeV 3 GeV ­ 30 GeV 30 GeV ­ 300 GeV Gamma-rays from the GC 3 4 Gamma-rays from the GC Lightcurve 5 Gamma-rays from the GC Source spectrum Model X-ray and low-energy emission come from the central object, probably SMBH accretion disk. ...

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• Fast search through RTT150 data archive
• Second Spectrum-RG/eROSITA Conference