... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

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... We measured these galaxies individually, and they are distinguished in our list by the suffixes a, b, c,... in order of increasing J2000 right ascension. ... The first column contains the UGC catalog number, to which we have added lower-case suffixes a, b, c,\dots in order of increasing J2000 right ascension to distinguish individual galaxies in groups. ... The third column lists the degrees, arcminutes, and arcseconds of J2000 declination plus the rms uncertainty in arcseconds. ...

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• ADDSTAR/ROMAFOT
• Culgoora catalog
• A General Catalog of HI Observations of Galaxies

... In the above example, the second region uses the global coordinate system (PHYSICAL by default). ... Supported systems include: name description ---- ----------- PHYSICAL pixel coords of original file using LTM/LTV IMAGE pixel coords of current file FK4, B1950 sky coordinate systems FK5, J2000 sky coordinate systems GALACTIC sky coordinate systems ECLIPTIC sky coordinate systems ICRS currently same as J2000 LINEAR linear wcs as defined in file In addition, two mosaic coordinate ...

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• *ftpplot* - Distribution of FFT coefficient values
• The SAOimage Menu (options within SAOimage)
• The AstroStat Slog Blog Archive [ArXiv] The Importance of Being First: Position

... Original Xiaomi Mi Position Activated Carbon Filter . Brand: Xiaomi . ... Package Contents: 1 x Original Xiaomi Mi Position Activated Carbon Filter . Цвет: узор черный/экрю . ... Цвет: серебристый . ... Цвет: серый . ... Пол: Женский . ... Цвет: Синий . ... Пол: Для девочки . ... Джинсовая куртка темно-синего цвета марки MAYORAL для девочек. ... Цвет: белый . ... Цвет: Черный . ... Пол: Мужской . ...

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... The dataset for a TRANSFER Mode observation includes all of the acquisition phases described in "Target Acquisition and Tracking" on page 9-16 , as well as the transfer scans described in "Transfer Scans" on page 9-21 . Each TRANSFER mode observation consists of a number of scans specified in the original proposal. Simultaneous guide star data cover the entire observation. ... The pipeline generates three ASCII files for every scan, one for each FGS. ...

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• http://www.stsci.edu/ops/swat/safing/07158/safing_recovery.txt
• http://www.stsci.edu/documents/dhb/web/c29_wfpc2data.fm3.html
• COS Instrument Handbook

... Roger Ritenour Title : Earth Filename : Earth.wad Author : Roger Ritenour Emale Address : ritenour@mail.comet.net Description : Ten level episode replacement for first episode of Hell on Earth. ... Play Information * Episode and Level # : Map01-Map10 of Doom II Single Player : Yes Cooperative Player : Yes (untested) Deathmatch : Yes (untested) Difficulty Settings : Yes, full range, all settings are slightly more difficult than standard Doom settings. ...

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• Dynamic HTML in Communicator
• Long description illustrating absolute positioning with respect to the initial
• Long description for change bar example

... The Tails of Comet NEAT Q4 . ... Comet NEAT (Q4) is showing its tails. ... M13: The Great Globular Cluster in Hercules . ... Endurance Crater on Mars . ... Scroll right to see the inside of Endurance Crater, the large impact feature now being investigated by the Opportunity rover rolling across Mars. ... Look West for a NEAT Comet . ... Missoula Crater on Mars . ... Scroll right to see the rocks, craters, and hills that were in view for the Spirit rover last week as it continued its trek across Mars...

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The Arcetri Catalog contains measures and bibliographic data for all known H2O maser sources north of declination = -30 degrees (to be observable with the Medicina radiotelescope). ... This database is fully described in Cesaroni et al. ... A statistical analysis on the atlas has been carried (Palagi et al 1993). R. Cesaroni, F. Palagi, M. Felli, M. Catarzi, G. Comoretto, S. Di Franco, C. Giovanardi, F. Palla: A Catalogue of H2O maser sources north of delta=-30 , Astronomy and Astrophysics Suppl., ...

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• The Discovery of the Galilean Satellites
• Memorial Station (Pathfinder)

Program: GETVAL Purpose: Get image values at given positions in a set Category: UTILITY File: getval.c Author: M.G.R. Vogelaar Keywords: INSET= Give set (,subset): Maximum number of subsets is 1. ... The image values are formatted according the string entered in FORMAT= APPEND= Ok to append? ... The flag characters and their meanings are: - The result of the conversion is left- justified within the field. ... If the result of a conversion is longer than the field width, an asterisk is returned. ...

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• The HIPASS Bright Galaxy Catalog
• SPC header items
• Duchamp Source Finder

NASA Johnson Space Center Oral History Project . Photos provided by NASA JSC Image Repository and Terry Slezak . ... from the primary NASA humidity-controlled cold storage vault built for the permanent preservation of spaceflight films. ... the other vault, situated in a remote corner of the NASA property, is used to store a complete duplicate set of the films, . ... at 0 F (-18 C) and 20% RH, houses a second duplicate set of backup copies and documentation of the spaceflight films. ...

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... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

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... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

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• AO Spectral Line Position Search Database.
• The Pleiades
• lbw 1200 Mhz tone

... The combination is based on the two common columns across the tables, the CYCLE column and the QUADRANT column. ... For each row in the combined table that the same CYCLE/QUADRANT pair appears, epauxcomb writes out the noted values to the corresponding columns in the combined table. ... A table labelled PNAUX1 containing the following columns:  FRAME of type int-32  CYCLE of type int-32  FTCOARSE of type int-16  FTFINE of type unsigned int-16  QUADRANT of type int-8  CCDID of type int-8 2. ...

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• http://xmm.vilspa.esa.es/sas/8.0.0/doc/epauxcomb.ps.gz
• http://xmm.vilspa.esa.es/sas/6.0.0/doc/epauxcomb.ps.gz
• http://xmm.vilspa.esa.es/sas/5.4.1/doc/epauxcomb.ps.gz

. Image created by Miruna Popescu, showing some of the objects displayed in the Armagh Observatory's Human Orrery. Original images from NASA were used.

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• Historical Background
• HISTORICAL BACKGROUND
• Armagh Observatory

Natural Satellites Service. ... Apparent Encounters . of the Tycho-2 Catalogue stars and the main natural planetary satellites . ... Suggestions . ... Here we present the precalculated circumstances of the apparent encounters of the stars of the Tycho-2 Catalogue with the main satellites of Saturn (S1-S8) for the period from November 2004 to February 2010, and with the Galilean satellites of Jupiter for the period from November 2004 to October 2010. ...

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• IDL programs
• Data bases of Natural Satellites. Documentation. Manual

User catalogs allow you enter positions for your objects into a file, to save time during an observing run. ... Before diving into the details, here is an example: # default coordinate system and object # (these are the standard defaults, so if you like them you can omit this line) CSys=FK5; Date =2000; RotType= Object ; RotAng=0 # some random objects # Name Pos1 (e.g. RA) Pos2 (e.g. Dec) Options in keyword-value format NGC6543 rot 90 ... Object Data . Defaults . Catalog Options . ...

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• SDSS Camera Move to Clean Room
• TUI:Introduction
• TPM log files

An introduction to the celestial sphere, describing its . apparent rotation and the special role of the pole star. ... This lesson plan supplements the web page listed below. Originally named "The sky above us" , it was split into two parts, each of which now has a lesson plan. ... Celestial sphere, constellation, zodiac, celestial pole, the Pole Star ("Polaris"), celestial equator, rotation of the Earth, planets [theodolite, equatorial axis]. ... What makes the Pole Star special? ...

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• The INTERBALL Tail PROBE orbital elements
• Trigonometry--what it is good for?
• Corrected Geomagnetic Coordinates

Astronomy Discussion Forums . ... Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... New Model: How Do The Sun And Moon Appear To Move Across The Sky . ... Post Message | ... focused on the Sun and the Moon as they appear from the given location of the Earth surface: . ... www.astronomy.net . About 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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• Teleportation - an Astronomy Net Gravity Forum Message
• Let Me Be More Clear - an Astronomy Net Exploration Forum Message
• Allentown School District Planetarium, AstroGuide Listing

... This plug-in enables you to add various types of lighting effects to your (RGB) image. ... Directional light . ... Well, you get the idea :) The default settings for this light-type is [-0.5,-0.5,-1.0]. ... Higher values makes your image reflect a lot of light (appear lighter or more intense), while smaller values makes it appear more dull or matte. ... A value of 1.0 makes your image very shiny (bright high-lights) while smaller values makes you image less shiny, making the high-lights dimmer. ...

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• APOD: 2004 May 13 - Rungs of the Red Rectangle
• Ranking
• APOD: 2010 June 15 - Starry Night Scavenger Hunt

... The original pro of used the fact that () any two such embeddings are related by isotopy and crossing changes, where edges are allowed to pass through each other. ... Lemma 5 is obviously false as stated: the sum should be over all unordered pairs of disjoint edges, i.e. it should be fact (), and this is what is assumed in the pro of. In the earlier argument, at the top of p.4, this do esn't matter because here, edges e and e that share a vertex automatically have lk (e, e ) = 0.) ...

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• http://www.mccme.ru/dfc/2012/reports/Kaledin_report-2014.pdf
• http://www.mccme.ru/dfc/2010/Program2/shlapunov_summary_eng.pdf
• Labo J.-V.Poncelet: L.O.Chekhov