... An OGIP-standard [ 1 ] timeseries with a binary table extension called RATE . ... All header and RATE table keywords from the input source TS (except those pertaining to the DSS) are propagated to the output, with the following additions to the header of the RATE extension: . ... BACKAPP - T if the background has been subtracted from the output timeseries, F otherwise. BACKSCAL - a real-valued keyword which records the ratio between the source collection area and the background collection area. ...

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• Description
• Extraction and correction of an X-ray light curve for a point-like source
• rgsspectrum

Next: Sky background definition Up: Background Definition Previous: Smoothing spline interpolation . The command BACKGROUND/SMOOTH enables to define the background without previous order definition. This feature is useful for example to correct for the background the image required for the order definition. ... All above methods are implemented in command BACKGROUND/ECHELLE and selected by the echelle keyword BKGMTD . ...

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• LEDA data base
• Order Definition
• HTML Tag Reference

System Throughput and SNR / Exposure Time Estimation . ... Figure 6.11 shows the photometric monitoring data for the standard star GRW+70D5824 (a white dwarf classified DA3; B-V = -0.09) in the WF3 and PC1 for the set of filters which are routinely monitored. ... Figure 6.12 shows the throughput decline in all four chips as a function of days since the last decontamination for the F170W filter. ... Figure 6.12: - Throughput for the F170W Filter Following Decontaminations. ... Time. ...

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• HDF-S Sydney Meeting Follow-up Notes
• Python: module aifc
• FOC F/96 COSTAR-corrected Point Spread Function Library

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

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• Relevant Standards - Apache HTTP Server
• SWXCS
• SDSSmosaic

Next: *.imh and *.qp Extensions Up: IRAF/PROS Files Previous: IRAF Image Arrays . The x-ray data are stored in QPOE files (Quick Position-Ordered Events, *.qp ) rather than image arrays. ... Note that, unlike IRAF images, QPOE files have no associated header file, and are always stored in the current directory, unless explicitly specified otherwise. Non-PROS IRAF tasks can also access QPOE data files in place of image arrays. ... rp110590.qp[pi=2:30] . ... The ROSAT PSPC qp file images are . ...

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• T Tauri Stars, Naked and Otherwise
• Eyes on the Sky, Feet on the Ground: How to Use this Book
• A quick look at tweets from the #AAS221

... 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: Resource Lists and Background Reading
• ASP: Following the Martian Coastline

... 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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• GRB follow-up team GRB workshop 2009

... Step 1: The magnetic field line tracing from the satellite position up to magnetic equatorial plane using IGRF magnetic field model. Step 2: Tracing back from the point (produced on the Step 1) to the Ionosphere (by using only dipole magnetic field) . ... The magnetic field line tracing from the satellite position up to the Ionosphere (the stop trace altitude 110 km) using Main (dipole) + Extraterrestrial magnetic field model (for example, Tsyganenko [1987], or [1989], or [1990] ) . ...

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• Magnetic mapping
• The FSP ASCII file description
• The simulative geophysical regions cross-sections coordinates

Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... Just A Little Background On Dick . Forum List | ... Post Message | ... Posted by Harvey on November 25, 2002 21:07:26 UTC . ... He knows a lot of math, probably more than anyone on this forum. ... www.astronomy.net . About Astronomy Net | Advertise on 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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• You Followed The Apology With The Same Foolish Insult - an Astronomy Net
• I Don't Follow You! - an Astronomy Net Exploration Forum Message
• Follow Up - an Astronomy Net Observation_reports Forum Message

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Management | ... Astrophysics graduate student programs . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... an ATNF upgrade of its Compact Array radio telescope to operate at high frequencies (corresponding to millimetre wavelengths), and an extension of its very long baseline interferometry (VLBI) capabilities; . ...

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• Initial ``fixes'' to millimetre data
• PmWiki | PmWiki / Images
• correlator:loaddisks [ATNF VLBI Wiki]

OptInt PmWiki : Pm Wiki / Wiki Style Examples . Wiki styles | ... PmWiki uses WikiStyles for styling text with color and other attributes. PmWiki 2.0 introduced the ability to control the styling further and to even place styles on blocks. ... In addition, an author can define a style "shortcut" by using the define= property. For example, to define a style of %red% , one can use: . define=mystyle color=red% Here is some %mystyle% red text created using a style shortcut. ...

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• AMI-Planck Follow-up Observation Database
• FrontPage Run-Time Component Page
• OptInt PmWiki : Wiki Style Examples

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

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• HdrDownloader
• ESO - ESO sky correction tools
• Procedure to be followed by DMD secretary for DFS Group documentation

... Graphics are imbedded in RTF in either a binary format or an (ASCII) hex dump of that binary. I have never seen a binary format graphic - I don't think that the filter will process binary correctly. It does handle the hex format of graphics, by converting the hex back into binary and writing the binary to a file. ... If a graphic is encountered when the filter is in the process of generating a link, the IMG form of the link is used even without the -I command line option. ...

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• Bring a job into the foreground
• Entering commands
• Evaluating shell variables

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

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• Siding Spring Survey Follow-up Obs
• Naomi McClure-Grffiths
• GSAOI RSAA Pictures Page

. All images here are thumbnailed to make them smaller and faster to load. To view the full-sized image, click on the thumbnail. The following are some backgrounds I have made. They all produce seamless patterns when tiled. Some of them are pretty rough on the eyes, however. There is a much a larger (and better) background collection at uoknor.edu, and another GREAT one at Joe Laffey's home page.

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• Adding new plug-ins to The Gimp
• APOD: October 21, 1999 - Follow The Spots
• Hands On; Dropshadows

... Step 1: The Footprint position calculation by the magnetic field line tracing from the satellite position up to the Ionosphere by using IGRF + Tsyganenko [1987] magnetic field model (the stop trace altitude 110 km). Step 2: Tracing back from the Footprint (produced on the Step 1) to the dipole equatorial plane (by using only IGRF magnetic field model up to the geocentric distance 8 RE and dipole field model after this distance). ... Back to the description . ...

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• Sensors
• Current Solar Wind Conditions
• Format Documentation of kpyymm.tab Files

... This information may be for older NA2 filters?? Filters There are 7 filter positions, containing the following filters from Custom Scientific . ... 0 - Bessell R . ... The only filter requiring a focus offset is the ND2 + R filter which will be measured on the sky. ... The red filter attached to the ND2 in position 6 is not the same as the Bessell R. Number 6 is an RG610 red glass filter ( Rolyn 65.1355 ) for the 610 nm cut-on. ... Focus . ... Guider Mechanical Controller (filter and focus) . ...

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• TUI:Instruments:Echelle:Echelle window
• Untitled Document
• TCC UDP Packets

.

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• http://zebu.uoregon.edu/2000/ph123/nw2.html
• http://zebu.uoregon.edu/disted/ph123/nw2.html
• http://zebu.uoregon.edu/2003/hum399/lec05.html

JSC History . ... NASA History . ... Search . ... Contact the JSC History Collection Archivist . ... The JSC History Collection is located in the university archives in the UHCL Alfred R. Neumann Library. For more location information, a map, and information on how to use the archives, visit the JSC History Collection Web page . The JSC History collection is listed in the following two databases / search indexes. ... Information on accessing the materials in the JSC History Collection . ...

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• Astronauts
• Houston History, Oral Histories
• Astronaut Bio: Mark C. Lee 10/2006

... Excel file with explanations how to fill; please, save the table in format not later Excel-1997-2003.) ... Rules and Regulations for a participant of the Olympiad that have to be translated into native languages of participants (if using Word, please, save the translation in format not later Word-1997-2003), attention for additions during last years ( blue and red text ): . ... Dr. Michael G. Gavrilov, Founding Chairman and Coordinator of the Asian-Pacific Astronomy Olympiad (APAO) . ...

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• XIX International Astronomy Olympiad, applications
• XVII International Astronomy Olympiad, applications
• The XX International Astronomy Olympiad, applications