... These are the filter transmission, the field of view (determined by the NICMOS optics external to the dewar, in combination with the HST mirrors), the reflectivities of the various external mirrors and the transmission of the dewar window. ... The sensitivity will obviously be affected by the pixel field of view. ... Finally, the optical efficiency will be degraded further by the reflectivities of the aluminum with MgF 2 overcoated HST primary and secondary mirrors. ... Primary mirror temperature . ...

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

... Suppose we have two images of the same part of the sky, taken by the same instrument, in the same energy band and containing the same fraction of background contribution. ... These two scenarios may be thought of as extreme cases of the more general procedure of forming a weighted sum of the two images. Indeed we may expect that, for the general case where an image is formed as the weighted sum of contributory images , . ...

Next: Photometry Up: Regions and Source Parameters Previous: *imcnts* - Find counts . This task (developed for use with optical images, but also useful with x-ray data) will quickly compute location, size, ellipticity, and position angle of sources. ... User can generate contour plots of any portion of the image and count rates in slices through the image. The program is advertised as ``quick [optical] photometry''. input file: rp110590_im1.imh . output file: logfile . ... Photometry . ...

Next: The root filesystem Up: Overview of the Directory Previous: Overview of the Directory . This chapter is loosely based on the Linux filesystem standard, FSSTND, version 1.2 (see the bibliography, [ Qui95 ]), which attempts to set a standard for how the directory tree in a Linux system is organized. ... This chapter does not explain all files in detail. ... The major parts are the root, /usr љ , /var љ , and /home љ filesystems (see figure 2.1 ). ... Figure 2.1: Parts of a Unix directory tree. ...

The angular power spectrum of the anisotropy of the CMB contains information about the formation of the Universe and its current contents. ... The image above shows an all-sky map with only ell=2 power on the left, and another map with only ell=16 power on the right. ... The current status of microwave background anisotropy measurements in my compilation from the literature has 95 data points from 25 experiments. These are all plotted in the figure below: . ...

. This diagram illustrates how anonymous block boxes may spring into existence around anonymous content. It shows two rectangular boxes that contain text, the first being anonymous. It has a light grey background and contains the words "Some text". Just below it is a P box with a dark grey background that contains the words "More text". The boxes are both within a DIV box. Return to image.

The CHIANTI database consists of 4 primary ASCII files for each ion in the database. contains the energy levels in cm^(-1) It includes both experimental data and theoretical values of the levels energies. References: %observed energy levels: NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61, 1995. %observed energy levels (12,13,41): Jupen et al., ... Have used the scaled superstructure energy relative to the 3P1 level. ...

... Report on Cosmic Call 1999 . ... Cosmic Call Sessions . ... This Report outlines methodology, hard- and software, which were developed to transmit first public Interstellar messages from Evpatoria Deep Space Center (EDSC), and describes four Cosmic Call Sessions, which were fulfilled in EDSC on May 24 and June 30 - July 1, 1999. ... Each Cosmic Call consists of two parts. ... Dutil Message, . ... The software for gathering all messages and creating the Cosmic Call stream, was written on C language. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... We have observed 210 Seyfert galaxies and 81 starburst galaxies with the 275-km Parkes - Tidbinbilla Interferometer (PTI) at 2.3 GHz (Norris et al., ... This result shows a significant difference between the two samples, and shows clearly that, although a few starburst galaxies may contain a buried AGN, the majority do not. ...

slitless -- Extract a spectrum from a direct/GRISM image pair slitless image grism output PARAMETERS . ... A two dimensional direct image to be used to select an object. grism . A two dimensional GRISM image containing slitless spectra of objects present in the direct image. output . ... Toggle whether or not a background estimate is subtracted from the extracted object spectrum. mingood = INDEF . Pixels of the grism image with values smaller than this are ignored. maxgood = INDEF . ...

... The trapping regions of high-energy charged particles surrounding the Earth are called radiation (or van Allen) belts (Van Allen et al., 1958; Van Allen and Frank, 1959). The inner one, located between about X = 1.1 - 3.3 Re (Earth radii, geocentric) in the equatorial plane, contains primarily protons with energies exceeding 10 MeV. ... The radiation belts are of importance primarily because of the harmfull effects of high energy particle radition for man and electronics: . ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

The following pages contain some examples of what you can do with my merge-anim script.. I tried to minimize the size of the images on these pages (all animations are smaller than 50 Kb), but you will probably have to be patient anyway. ... Adding a background to an animation . ... It merges a background (or top) layer with all other layers in an animation. ... I will probably add some options for applying a layer mask to an animation or applying an animated mask to a static layer. ...

... Cosmic Ripples Implicate Dark Universe . ... The cosmic microwave background radiation emanating from the universe could only have the above fuzzy pattern if it contained clear amounts of dark matter and dark energy. The Very Large Array of Radio Telescopes . ... The Pipe Dark Nebula . ... The dark clouds, suggestively shaped like smoke rising from a pipe, are caused by absorption of background starlight by dust. ... Moon and Planets by the Eiffel Tower . ... The Galactic Center Radio Arc . ...

... self-absorption - the absorption of light shining on an object by a process similar to that which produced the light originally; if a cloud emits less light than it absorbs from other clouds behind it, this net loss of light, termed self-absorption , causes the foreground cloud to appear darker than the background field (the term is from spectroscopy, where small absorption dips sometimes occur in larger emission lines, making the latter look as if it is absorbing part of itself) . ... HISA Main ...

ANTHONY LASENBY - PROFESSOR OF ASTROPHYSICS AND COSMOLOGY . My main fields of interest are in cosmology, the Cosmic Microwave Background radiation, gravitational theory and mathematical physics. I am a member of the Astrophysics Group at the Cavendish Laboratory Cambridge, and also Deputy Director of the Kavli Institute for Cosmology , Cambridge. ... Anthony Lasenby . Professor of Astrophysics and Cosmology . Astrophysics Group . ... Cambridge . CB3 OHE . ... 44 1223 337293/4 . ...

... The requirements contained in the current National Electrical Code and NFPA Standard for Electrical Requirements for Employee Workplaces apply to all electrical equipment, installations, and usage's at APO. ... do not use defective electrical equipment. ... the Site Safety Officer is to be notified of overloaded circuits in order to replace fuses and reset circuit breakers. ... the only multiple outlet adapter, other than extension cords, allowed are those have internal circuit breakers. ...

... Cabinets containing the Palomar, ESO and UKSTтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: Cabinets containing the Palomar, ESO and UKST survey plates and films. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ...