Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums . ... Brightest Northern Hemisphere Galaxy . Forum List | ... Post Message | ... In which constellation would I find the brightest galaxy in the northern hemisphere? ... 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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• You Can Make Stellar Images Brighter - an Astronomy Net Article
• The Constellation Cepheus - by Astronomy Net
• The Constellation Bootes - by Astronomy Net

Target Acquisition Reference Information . ... In almost all cases where an onboard acquisition will not work (because the object is in a crowded field, or is variable, or is a moving target), it is sufficient to use an early acquisition to get a WFPC2 or FOC image a few weeks in advance of the GHRS observation. ... Explicit BRIGHT and FAINT limits may be specified if you desire, although there is an increased risk of a failed acquisition unless you are confident of those fluxes. ... MAPs . ...

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• Flux Data [Flux and Other_Fluxes]
• Observing Faint Targets Near Bright Objects
• GHRS Instrument Handbook

. Figure 3. Dark dimmings and bright post-eruption arcades in solar sources of the severest FDs over the solar cycle 23 in SOHO/EIT 195 е fixed-base difference images. The FD magnitude of the strongest disturbances and the dates and time of their registration are specified in the upper right corner of each panel. The dates and time of EIT images subjected to the subtraction are specified at the bottom of each panel.

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... Classes . ... Constellation Class Reference . ... getEquinoxEquatorialPos (const StelCore *core) const . Get observer-centered equatorial coordinate at the current equinox The frame has it's Z axis at the planet's current rotation axis At time 2000-01-01 this frame is almost the same as J2000, but ONLY if the observer is on earth. ... getJ2000GalacticPos (const StelCore *core) const . ... Get observer-centered hour angle + declination (at current equinox) It is the geometric position, i.e. More.. ...

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• Stellarium: StarMgr Class Reference
• Stellarium: TuiNodeActivate Class Reference
• Stellarium: StelSkyLayerMgr Class Reference

... Meta Index / Home Page / Description / Specifying source region shapes . When radiusstyle =`contour', the task calculates the source region shape as an elliptical locus which approximates the contour of the PSF at a given flux value. ... Clearly, in order to calculate the shape of such a flux contour, it is necessary firstly to normalize the PSF to the source brightness and secondly to determine the flux level (in `brightness' units per pixel) at which to find the contour. ...

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• Description
• Algorithm

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... A bright nova has recently been discovered in the constellation of Delphinus (The Dolphin). ... The nova was confirmed late on August 14 at a magnitude of 6.3 (in a dark sky the faintest naked-eye stars are approximately 6.0 magnitudes - the lower the magnitude the brighter a star). ... Nova explosions occur in binary systems composed of a star similar to our Sun but only ~1/10 of its mass, and a star called a white dwarf. ...

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• ASTRONOMICAL PHENOMENA FROM MARS
• Armagh Observatory Geminid Meteors

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• Star Names
• Standard On
• Cummings generator routines

... Miriad has a couple of tasks available for finding positions of sources (see also cgcurs in Chapter 17 ). ... It fits a 2-D parabola to the image intensities in a 3 by 3 pixel box centred on the brightest pixel in a specified region and reports the fitted location and intensity. ... Input image . ... The quality of your fit can improve significantly by selecting a snug region, and/or using the clip keyword to keep pixel values with little signal (e.g. sidelobes and noise) out of the fitting process....

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• Function Summary
• Deconvolution with CLEAN
• moment

... It displays information about every token from document as they produced by a parser and processed by dictionaries as it was defined in configuration, specified by cfgname or oid . tsdebug type defined as CREATE TYPE tsdebug AS ( "Alias" text, "Description" text, "Token" text, "Dicts list" text[], "Lexized token" text . ... In this example, the word 'Brightest' was recognized by a parser as a Latin word (alias lword ) and came through a dictionaries public.en_ispell,pg_catalog.en_stem . ...

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• APOD: 2002 June 20 - Bright Galaxy M81
• APOD: 2000 June 11 - Sirius: The Brightest Star in the Night
• APOD: 2006 July 7 - Bright Galaxy M81

In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...

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• ASP: Light Pollution

... Field size . Object name . ... Map size . ... Field size: the approximate size of the map in the Y direction. ... Galaxies: . ... Galaxies, which size exceeds some value depending on the field and map sizes, are displayed with their real positional angles and sizes by 25m isophote. ... In the "tools" fields there are links to the several famous AVO (Astrophysical Virtual Observatory) resources: NED and Simbad databases and DSS2 (Palomar Digitized Sky Survey) images of the corresponding sky area. ...

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• Sirius: The Brightest Star in the Night
• Астронет > Sirius: The Brightest Star in the Night
• Bright Galaxy M81

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... ESO . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... This chart shows the location of the bright star Fomalhaut in the constellation of Piscis Austrinus (The Southern Fish). ... Fomalhaut is the brightest star in the constellation and one of the brightest stars known to have an orbiting planet. ...

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• The bright star Fomalhaut in the constellation of Piscis Austrinus
• The bright star cluster Messier 7 in the constellation of Scorpius
• The bright star clusters Messier 47 and Messier 46 in the constellation of

Next: Power Law fit to Up: Spectral Analysis Previous: Error Determination . With PROS2.3 all fitting is performed using Poisson statistics , rather than Gaussian, so that results will be correct even for small counts ( ) in some channels. Power Law fit to a Point Source . Raymond Model . Two-Temperature Raymond Model . Limiting Energy Channels Input to the Fit . Multiple Data Sets . ... Fit a source with a small number of net counts . Inspection of results . ...

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• Autoconfigure of Frame #1
• Target Finding
• Event File Specifications

... Since moonshine is really reflected sunlight, the full Moon is on the average slightly brighter in mid-winter, when Earth is closest to the Sun. In addition, the distance of the full Moon also varies, due to the ellipticity ("eccentricity") of the Moon's orbit. On 22 December, 1999, the two effects combined to produce the brightest full Moon of the century. ... This year will be the first full moon to occur on the winter solstice, Dec. 22nd, commonly called the first day of winter. ...

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• Finding the Pole Star

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

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• Bright Supernova - Archives
• Supernovae 2012fr in NGC 1365
• Supernova 2011iy in NGC 4984

... 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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• Optical component of GRB080319B

... Class . ... METHOD . ... java.lang.Object java.awt.Component java.awt.Container java.awt.Window java.awt.Frame ij.plugin.frame.PlugInFrame ij.plugin.frame.ContrastAdjuster . ... public class ContrastAdjuster . ... Nested classes/interfaces inherited from class java.awt.Frame . ... Nested classes/interfaces inherited from class java.awt.Window . ... Nested classes/interfaces inherited from class java.awt.Container . ... Nested classes/interfaces inherited from class java.awt.Component . ... void . ...

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• WindowManager (ImageJ API)
• Orthogonal_Views (ImageJ API)
• CommandFinder (ImageJ API)

... Drag data has the following properties: . Drag action type (ie GDK_ACTION_COPY, GDK_ACTION_MOVE). ... A GDK_ACTION_COPY would be a typical drag-and-drop without the source data being deleted while GDK_ACTION_MOVE would be just like GDK_ACTION_COPY but the source data will be 'suggested' to be deleted after the received signal handler is called. ... Sent and received data format types ( selection target ) come into play only in your request and received data handler functions. ...

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• Access LEDA from Aladin
• Function Specification
• Specifying Sub-Image

... Restrictions ) are used. If specified form of output is EMP then astrometric equatorial coordinates are printed in the form usual for Ephemerides of Minor Planets, with formal precision of 0.01 minute of time in R.A. and 0.1 minute of arc in declination. ... It should be noted that the near-opposition ephemerides are not calculated for bodies/ points with numbers from –12 to 0 (in case they are included into task for computation of such ephemerides only their names are displayed in the results). ...

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