M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

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... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Chapter 4: Imaging > 4.6 Photon and Cosmic Ray Persistence . ... HgCdTe detector arrays like those in NICMOS are subject to image persistence. ... Experiments using Cycle 7 NICMOS data have shown that it is possible to scale and subtract such ?post-SAA darks? from subsequent science exposures taken later in the same orbit, and thus to remove a significant fraction of the CR persistence signal. ...

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• Observing Faint Targets Near Bright Objects

... 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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• Phil Plait's Bad Astronomy: Bitesize Tour of the Solar System

... September 28, 1999 . Mystery Object Explained . ... The so-called mystery object appeared star-like but displayed colors unlike most stars or quasars . Further investigation has now revealed the object to be a Broad Absorption Line (BAL) quasar , a relatively rare type of active center of a distant galaxy. Different atoms and molecules in the absorbing gas surrounding the BAL quasar 's center probably cause the unusual colors. ... About APOD > . ...

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• APOD Index - Messier Objects
• Astronomical Names
• Kuiper-Oort

... Mystery Object Explained . ... Further investigation has now revealed the object to be a Broad Absorption Line (BAL) quasar , a relatively rare type of active center of a distant galaxy. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Публикации с ключевыми словами: далекие галактики - квазары - линии поглощения - активная галактика - ядра активных галактик . Публикации со словами: далекие галактики - квазары - линии поглощения - активная галактика - ядра активных галактик . ...

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• Mystery Object Explained
• Is Mystery Object an Orphan Afterglow
• Астронет > Is Mystery Object an Orphan Afterglow

... Duchamp | ... Top | Duchamp is a solution to this problem of three-dimensional source finding. ... A list of the detections and their properties, as well as the input parameters that were used. [text file] . ... It can be downloaded in source format, in a gzipped tar archive. ... Changes from the previous version can be seen here (this file is included in the tar archive), while the archive files and documentation from the previous release versions are here , if you are really interested. ...

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• uvfit
• casacore: casa::LELCoordinates Class Reference
• imfit

There are six possible ways of object description: . a) by number(s) . ... d) by list . e) by orbital elements . ... They should be introduced as year, month, day with tenth (e.g. 20021104.1). d) Computations are performed for all objects listed in the file whose path and name should be introduced into assigned data field. ... On pressing Edit file button user has a possibility to look through the list of object elements or their coordinates and velocities to add or to change it. ...

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• LAB Ephem. Astronomy-ERA

... This chapter documents all the JavaScript objects, along with their methods and properties. ... Full entries for each object appear in alphabetical order; properties and functions not associated with any object appear in Chapter 2, "Top-Level Properties and Functions." ... Tables included in the description of each object summarize the object's methods and properties. Full entries for an object's methods and properties appear in alphabetical order after the object's entry. ...

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• Accretion disks in luminous young stellar objects
• NICS News
• New Features in this Release

... 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: Making Your Own Astronomical Camera
• ASP: Biography of a Star: Our Sun's Birth, Life, and Death
• ASP: Using Multicultural Dimensions to Teach Astronomy

... The 209 candidates were selected from our first and second priority samples introduced in Paper IV. Of 169 first priority candidates, 141 objects appeared in our list as new ones. 28 objects were listed in the NED as galaxies or objects from various catalogs with known redshifts and some of them already had information on emission lines in earlier publications. ... The ``random selected sample'' was created to access the fraction of BCGs in the second priority list and contains 43 objects. ...

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• The random selected sample
• Definition of objects, sky subtraction and extraction of objects
• HYPERLEDA Help

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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• sgs summary
• TUI:Guiding:User's Guide
• TUI:Telescope:Offset Types

... The first column shows the kinematical diagrams, where is the angle between the line of sight on the object and the vector of rotation about Z -axis, and V S is objects line-of-sight velocity relative to an observer at rest at the position of the Sun. The straight lines are regression fits, whose slopes yield the subsystem’s rotation rate. The second column shows the relations between metallicity and distance from the Galactic plane. ... privious figure | next figure . ...

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... Since the reddening found for the stars in Table 13 was small, no reddening correction was attempted. ... These diamonds indicate the positions of very low mass, 3 Myr old, objects from the work of Burrows et al. ... This optical V versus R - I scheme is a very powerful method of detecting very low mass (VLM) objects. ... Because of this, young brown dwarfs are intrinsically no more difficult to observe in the optical than low mass stars at the age of Orionis. ...

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• Spatial Region Coordinates
• The AstroStat Slog Blog Archive [ArXiv] A fast Bayesian object detection
• The galaxy M100

... Next: Object Detection Using Up: Object Detection and Previous: Automated Classification of . ... A status report of the The GSC Object Classifier (GOC) project is presented. ... The GSC contains multiple entries for some objects due to plate overlap. It classifies objects as stars, non-stars, galaxies, blends and potential artifacts; the latter three classifications are rare, and only exist in GSC version 1.1, to which they were added manually. ... star, . ... non-star, . ...

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• Modern CCD Observations of Moving Celestial Objects: Algorithms and Software
• Refining the Guide Star Catalog: Plate Evaluations
• ADASS 2002 Conference Proceedings

This photograph shows the Large Magellanic Cloud, a neighbouring galaxy to the Milky Way. ... By studying how their light changes and other properties of these systems, astronomers can measure the distances to eclipsing binaries accurately. A long series of observations of these objects has now led to the most accurate determination so far of the distance to the Large Magellanic Cloud тАФ a crucial step in the determination of distances across the universe. ...

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• How can the Hubble Space Telescope (HST) take pictures of objects light-years
• Easy-to-find Objects in the 2015 Winter Sky | Astronomy.com
• What effect, if any, do the objects in the Kuiper Belt and Oort Cloud have on

SN 1999aa - A Third Supernova Discovery . Just 9 weeks after the discovery of SN 1998ey a suspect was found 1" east and 28" north from the centre of NGC 2595 on Feb.11.0166 U.T.. ... Further inspection of 6 images of NGC 2595 taken during Feb. and March 1998 showed no object at the position of the suspect. ... Beijing Astronomical Observatory recorded SN 1999aa on Feb. 11.6 and 12.6 UT, the first obervation being only 14 hours after the discovery. ... Back to Supernova 1999aa in NGC 2595 . ...

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• Supernova 2002an in NGC 2575

... Satellites of the planets are assigned a provisional designation (indicating year of discovery) by the Central Bureau for Astronomical Telegrams ( CBAT ) upon satisfactory demonstration of the existence of a new object. ... In the past, Comets were first given a provisional designation, consisting of the year and a lowercase letter indicating the order of discovery in the year (e.g., 1994a was the first comet discovered or recovered in 1994, 1994b the second, etc.) ... Names .. ...

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• The Principle of the Rocket
• Kuiper-Oort
• Newton's theory of "Universal Gravitation"

... The function is accessible, if the file with the image is open, and Ю identification of a star field is made. ... a) Load a first image by the command " Open ", and others by the command " Open +". b) Make an identification of the field. c) Open the menu " File ", select " Next " or press . ... It is necessary tree or more images. a) Load the first image by the command " Open" , and others by the command " Open + ". b) Open the menu " Marking ", select "Detect moving objects" or press - . ...

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... 8) Why does WolfEdit crash when I fill a large area? ... Use one of the four "man pointing a gun" icons in the top left corner of the palette. ... Use the Lift Control Panel item. You can only have a control panel which faces east or west - the north or south face will appear as a lift side panel, although it will work as a control panel. Similarly, a lift side panel viewed from the east or west will appear as a control panel, but won't work as one. ... Because you used the Get Info... box. ...

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• Alignment, font styles, and horizontal rules in HTML documents
• Dynamic HTML in Communicator