home education > resources . ... Resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Space Science Education Resource Directory . ... An asteroid space ship being chased by an enemy missile goes through the ergosphere of a rotating black hole, taking energy out and making the chasing missile fall in the event horizon. ... In the far future, a virtual human is dropped into a black hole and makes an interesting discovery about space and time. ...

Optical characteristics of non-spherical scatterers . ... A list of reviews (under preparation) and links to the databases of Hovenier's and Gustafson's groups on the visible/infrared and microwave light scattering experiments, respectively. ... Light scattering codes . ... Benchmarks in optical properties . Tables of different light scattering characteristics carefully calculated by different codes (methods). Dependence of optical properties on scatterer parameters . ...

Catalogs of sources found in the HDF-S images can be obtained from this page. ... version 1 . ... HDF-N SExtractor catalog . ... Objects that were considered to be "over merged" in the first catalog were deleted from that catalog and the entries for their various subcomponents were taken from a catalog with a higher detection threshold. ... The number of objects added and deleted for the different catalogs were WFPC2: 24 deleted, 31 added; STIS: 26 deleted, 8 added; and NICMOS: 14 deleted, 29 added. ...

... Source definition list: a dataset containing the SRCLIST table, and to which the region extensions will be added. evlist . ... The dispersion-axis spacing of vertices for image regions and the spatial background region, specified as the number of vertices across a node. ... Downward size of image regions, specified by the percentage of the cross-dispersion PSF covered between the source cross-dispersion off-axis angle and the lower of each pair of vertices with the same dispersion coordinate. ...

... R. E. Jackson . ... H.-M. Adorf . ... D. C. Wells . ... AstroWeb is a World Wide Web (WWW) interface to a collection of Internet accessible resources aimed at the astronomical community. ... The goal of AstroWeb is to be the most complete, up to date, and useful listing of Internet accessible astronomical resources available anywhere. ... Jackson, Wells, and Adorf noticed that they and others had created largely overlapping lists of Astronomical resources. ...

... This section will deal with obtaining photons within specified regions of an image. Available regions are: Annulus Box Circle Ellipse Field -- entire field Irregular region based on intensity of map... i.e. region defined by contour levels. ... The imcnts task in the xray-spatial package sums the source and background counts in specified regions, and subtracts one from the other properly normalized. ... imcnts* - Find counts in an extended region, after removing an embedded point source . ...

... A modern driver for a device will find out the bus-resource configuration without you having to tell it anything. ... In the worst case you must hard-code the bus-resources into the kernel (or a module) and recompile. In the middle are cases such as where you run a program to give the bus-resource info to the driver or put the info in a configuration file. ... You give such bus-resources as a parameter to the kernel or to a loadable module. ... Setserial is often run from a start-up file. ...

Next: Program use Up: Description of program searchdup Previous: Description of program searchdup . Parameter input is done with a graphic user interface. ... Input file: Name of the input catalog file. It has to be formatted, one record per source/observation, according to the format used in the Arcetri observations and source archives. ... Minimum number of observations per source Source with less than this number of independent observations are not included in the output file . ...

Links and Resources for Energy and the Environment . The world is finally becoming globally aware that exponential resource usage in combination with finite reserves is a recipe that ensures our great grandchildren won't be born. ... National Environmental Information Service . ... Electronic Energy Journal . ... Sustainable Development Dimensions , including sections on Environmental information , Environmental policy, planning and management and Energy for development . ... Acid Rain Resource . ...

The Astronomy Net . Articles | AstroGuide | ... Forums . ... H ere you can find resouces to help understand perhaps the grandest of all sciences. ... Upcoming Sky Events . ... This site includes lists of manufacturers, vendors, software, etc. organized in the AstroGuide to help when you are looking to purchase your tools. ... Astronomy Articles . ... Are you interested in writing an article for the Astronomy Net? ... www.astronomy.net . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... CentralProcessor 0.11 documentation . ... Only continuum source-finding is done at this point - spectral-line source-finding will be added in the future. The source-finding applies a spatially-varying signal-to-noise threshold, and fits 2D Gaussians to detected islands to create a component catalogue. At this point, only a limited set of Selavy?s possible parameters are made available through these scripts. ... nsubx ( Selavy Basics ) . ... User Parameters - Mosaicking Continuum images . ...