... The task accepts two sources lists: the observation source list and the exposure source list. ... List of selected sources. This le contains a table, called SRCLIST, with the following columns: Name Type Description SRC NUM Integer Source ID from observation source list RA Double RA from exposure source list DEC Double Declination from expoure source list RATE Real Count rate from observation source list COUNTS Real Number of source counts, from exposure source ...

Session 9 - The Hubble Deep Field. ... The Hubble Deep Field (HDF) experiment is a unique project to explore at unprecedented depth and angular resolution the faintest and most distant galaxies. ... This allows study of broad-band spectral energy distribution, morphology and number count statistics for galaxies that span the largest, if not the whole, time interval of galaxy history. ... Here we present preliminary number counts, color-magnitude and color-color diagrams for the 4 HDF frames. ...

Images of Pluto taken by the NASA Hubble Space Telescope with the ESA Faint Object Camera. These images, taken in late June and early July, 1994 are the first views which allow resolution of features on Pluto's surface. ... The large lower images are processed versions made from a number of Hubble observations. ... Central Latitude/Longitude (deg): N/A . ... Instrument: HST ESA Faint Object Camera (FOC) . ... Illumination Incidence Angle (deg): N/A . ... Greenbelt, MD 20771, USA . ...

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. ...

... Behemoth black hole found in an unlikely place . ... black holes . ... Observing springtime deep-sky objects with a large telescope . ... Could large numbers of black holes account for much of the "dark matter" estimated to exist in our universe? ... NASA, ESA, M.J. Jee and H. Ford (Johns Hopkins University) No, because the universe never had the raw material to grow enough black holes to account for current estimates of dark matter. Get instant access to subscriber content on Astronomy.com! ...

Next: Why do Radiopulsars not Up: Ejectors in Massive Binary Previous: The Evolutionary Status of . ... Numerical simulation of the evolution of NS shows (Lipunov and Prokhorov, 1987[ 115 ]) that the fraction of ejecting stars in massive systems with normal components may be as high as several tens of percent of the total number of binary systems (see Figure 27 ). ... Mike E. Prokhorov . ...

General Forum Message . Forums: . ... The Telescope's F/number . ... The f/number (focal ratio) of any telescope tells two things about the telescope and that is it's intended purpose and it's photographic performance. The brightness of a star depends on the telescope's aperture not the telescope's f/number. ... The f/number of any objective lens or a mirror of a telescope has nothing to do with the visual brightness of an image, the bigger the aperture the better. ... www.astronomy.net . ...

Procedure to be followed by DMD secretary for DFS Group documentation . Initial email comes from author requesting document number. ... An email is then sent by the DMD secretary to the Technical Archive (tecarch@eso.org) with the same information, to request the last 4 digits of the document number (the 'chronological number'). ... Some time will pass and then the author, using the DFS Group tool 'WebCheck', will post a web readable version of the document on the DFS Group website. ...

Next: Command Line Editing Up: Command Syntax Previous: Command Syntax . The last 15 commands entered on the terminal are kept in an internal buffer (the no. of commands saved can be changed via SET/BUFFER ). To recall (and execute) any of these commands, simply type the associated command number. This is the number ``xyz'' appearing in the prompt Midas xyz > when that command was entered. ... For example, if the last two commands in your command buffer are: . 22 READ/IMAGE supernova . ...

Two major reasons: the number of stars isn't really seven (it's many more), and they all have different brightnesses, so that you see more or fewer of them depending on viewing conditions. The brightness of stars is measured on the magnitude scale, where the most prominent stars in the sky are around 1st magnitude, and the faintest you can see with your eye are about 6th. ... I think this makes it quite likely that the list will be truncated at Taygeta, giving six visible stars. ...

We are now in the midst of the annual Perseid meteor shower. The shower continues through August till 24th, with a broad peak of activity expected after midnight on the night of 12/13th. This shower is one of the most reliable meteor displays of the year. During peak activity, up to 100 observable meteors per hour may enter the Earth's atmosphere. ... FOR FURTHER INFORMATION PLEASE CONTACT: John McFarland at the Armagh Observatory, College Hill, Armagh, BT61 9DG. ... Bright Taurid Meteor . ...