... The Time shift for April, 17-18 20 April 1999 . ... The INTMINS April 1999 operations schedule was done on the base of the MIR ground track long-term prediction using the MIR's orbital elements status on 29/03/99 . ... The investigation of the time shift behaviour was began before 29/03/99 on the base of the different orbital elements determined (by KIAM RAN) 22/03/99, 25/03/99 and continued on the base of the orbital elements determined at 31/03/99, 5/04/99. ... Modified 20 April 1999  ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

... Bojan Nikolic web pages (r. 329) . ... casata: CASA Tools for Analysis . The most recent version of CASA. I get my from https://svn.cv.nrao.edu/casa/linux_distro/ . ... bzr branch http://www.mrao.cam.ac.uk/~bn204/alma/casata/b/trunk/ . ... Let bzr know who you are: . ... One you feel ready to share your contribution, send them to everybody using: . bzr send --mail-to=mrao-casa-devs@lists.cam.ac.uk . ... Contributing to casata . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Sources found in the local detection step (task eboxdetect ) at significance levels (column SIGMA of eboxdetect source list) exceeding a user-specifiable threshold (input parameter mlmin ) in the respective energy band are removed from the image using a suitable PSF and source brightness dependent cut-out radius (determined to be the radius at which each source contributes more than a user-specifiable number of counts/arcsec to the background; parameter scut ; default value: 0.01). ...

Visual Discovery of SN 1996X in NGC 5061. ... It was not until the IAU Circular was issued that we found out there had been an independent amateur photographic discovery of this supernova by Kesao Takamizawa of Japan. ... Earlier in the week, 660 galaxies had been observed during two nights we had use of the 40 inch telescope at Siding Spring. ... The supernova in NGC 5061 was first seen with the smaller telescope about 10pm local time on Friday, April 12 (April 12.5 UT). ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

... Because the DMR instrument is differential and every pixel is multiply sampled, sky maps are produced by solving a coupled system of linear equations (the normal equations) to minimize a chi-squared. ... This is reflected in the algebraic form of the normal equations matrix, so that, if one were to diagonalize the matrix, one would find a single eigenvector whose eigenvalue was identically zero, and the associated eigenvector, viewed as a sky map, would have a constant value. ...

ACS Insturment Handbook for Cycle 24 . ... Advanced Camera for Surveys Instrument Handbook for Cycle 24 > Chapter 9: Exposure-Time Calculations > 9.1 Overview . ... 9.1.1 The ACS Exposure Time Calculator . In this chapter we explain how to use sensitivities and throughputs to determine the expected count rate from your source and how to calculate exposure times to achieve a given signal-to-noise ratio for your ACS observations taking all background contributions into account. ...