... For the HCTE the command first averages the rows given as the second parameter. The command uses the number of image pixels, the last image pixel and the first bias overscan pixel is obtained and computes the HCTE according to the formula: . where: bs are the counts above the bias level in the first overscan pixel in a row; ic are the count above the bias level in the last image pixel in a row; ni are the number of image pixels in a row. ...

... Keywords: Proper Motions, Schmidt Plates, Astrometry, Guide Star Catalog, Palomar Sky Survey . In this paper we describe a program of determining proper motions from digitized scans of 1950's-era Palomar Sky Survey (POSS) Schmidt Plates and 1980's-era Palomar Oschin Schmidt `Quick V' plates that were taken for the Hubble Space Telescope ( HST ) Guide Star Catalogue. ... Arrows indicate the magnitude and direction of the proper motion for the stars. ...

Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...

... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Finding the Bivariate Brightness Distribution of galaxies from an H I selected sample . ... A method is presented that will enable the bivariate luminosity/surface brightness distribution of galaxies to be determined from a relatively small H I selected sample. ... PICASSO - an automated galaxy finder . ...

Astronomy Picture of the Day . ... In low Earth orbit there is not enough atmosphere to diffuse and scatter sunlight, so shadows are black and the sky is dark - even when the Sun shines. ... While modern astronomers still refer to M57 as a planetary nebula, at one light-year across M57 is not a planet but the gaseous shroud of a dying sun-like star. ... NGC 7293: The Helix Nebula . ... The Helix Nebula is the closest example of a planetary nebula created at the end of the life of a Sun-like star. ...

... Finding Stars . ... Handling Bad Pixels . ... The guide camera image controller can control one or more guide cameras. ... Each time the camera is read, the image is automatically saved to a fits file on a shared disk. ... Cameras that have bad pixels require "bad pixel maps" in order to find stars, centroid or even compute statistics for the image. ... View this image (for instance in NIH Image) and determine an upper and lower cutoff; pixels whose values are outside of this range are considered...

... The bright supernova (hereafter SN) in the galaxy NGC 4527 was first sighted by S. Knight (USA) on April 13.17UT at magnitude ~14.0v. The report of the sighting was subsequently forwarded by phone to the AAVSO. ... SN 1991T. The galaxy NGC 4527 is an Sb(s)II type galaxy with an apparent Blue magnitude of 11.32 (Shapley-Ames, 1981). ... An analysis of this event utilizing visual observations by amateurs, plus a light curve is presented.. ... THE LIGHT CURVE: . ... ISN SN 1991T web page . ...

From: TerryMosel aol.com Date: Sat, 12 Jun 2004 19:20:37 EDT Subject: Delta Scorpii Bright? ... I quote: "Delta Scorpii tonight was estimated as not far off the brightness of Antares, unless it's my eyes playing tricks! According to Starry Night Pro 4.5, Delta is supposed to be mag 2.3 but it seems to be nearly equal brightness with Antares which is supposed to be mag 1.1 and that is still allowing for the difference in colour. ... Clear Skies, Terry Moseley . ...

The technical memorandum: Time and Time Interval Measurement with Application to Computer and Network Performance Evaluation (PostScript) describes a number of techniques for conducting experiments typical of computer network and transmission systems engineering. ... The usual data collected during a performance run of some experiment might include time offsets, time delays, frequency offsets and various error statistics. ...

... CEPHEID VARIABLE STARS: A Cepheid variable or Cepheid is a member of a particular class of very luminous, massive variable stars with pulsation periods of 1-70 days. ... The relationship is calibrated using data collected from Cepheids whose distances are determined by other means. ... Browse through the 68 CCD fits images he sent you, using ds9 and locate the Cepheid variable. ... Image credits: ESA - "http://sci.esa.int/science-e-media/img/20/cepheid-variables.jpg" . ...

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

Home About Meade Product Information Dealer Locator Customer Support Investor Relations Dealer Support Employment Opportunities Site Map . Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . Magellan Telescope Computer System Instruction Manual . Magellan II . ... Mode . ... Telescope Port . ... Telescope Mode . ... Coordinate Mode . ... Timer Mode . ... Index of Instruction Manuals . ... Copyright 2006 Meade Instruments Corporation, All Rights Reserved. ...

... Package . Class . ... PREV PACKAGE NEXT PACKAGE . FRAMES NO FRAMES All Classes . Class Summary . ... Displays the ImageJ Channels window. ... Implements the Image/Color/Color Picker command. ... This plugin implements the Brightness/Contrast, Window/level and Color Balance commands, all in the Image/Adjust sub-menu. ... ImageJ plugin that does curve fitting using the modified CurveFitter class. ... Implements ImageJ's Paste Control window. ... This is ImageJ's macro recorder. ...

Can be found at the Sinclair ZX Spectrum 128. (at the computer) . at the monitor cable) . 8 PIN DIN (DIN45326) FEMALE at the computer. 8 PIN DIN (DIN45326) MALE at the monitor cable. Pin . ... Note: Direction is Computer relative Monitor. ... Online ZX Spectrum 128 Manual Page 3 . ...

... 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. ...

. Scientists at Brown, Carnegie Mellon, and Cambridge universities have detected gamma ray emissions from the direction of the galaxy Reticulum 2. Bright areas indicate a strong gamma ray signal coming from the direction of the galaxy, according to the researchers search algorithm. NASA/DOE/Fermi-LAT Collaboration/Geringer-Sameth Walker, Carnegie Mellon Univ./Koushiappas, Brown Univ.

... Follow these steps to get the package and install it. ... Specify this as an environmental variable drsRoot: mkdir /cool2/jaffe/ews setenv drsRoot /cool/jaffe/ews (csh) export drsRoot=/cool/jaffe/ews (sh) This assignment must be made whenever you want to use EWS, so it is most convenient to put it in a .login, .profile,.alias.... type file. ... After fixing cfitsio/Makefile, return to $drsRoot and type gmake install_c This should recompile the c-code using the new Makefile. ...

NAUTICAL ASTRONOMICAL YEARBOOK for 2010 (in Russian) . Foreword . ... The EPM2004 domestic numerical theory of movement of the Sun, the Moon, and major planets is used in т??Nautical Astronomical Yearbookт?? In NAY the positions of stars are published in the system of stellar catalogues FK6 and HIPPARCOS. ... conditions of visibility of the planets, apparent places of stars, star charts, tables of azimuths of Polaris ? ... Examples for NAY 2010 are calculated by M.V.Lukashova, M.L.Sveshnikov. ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...