May 2021 ISSN 2397
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CENTAURI II Benutzerhandbuch
CENTAURI II Benutzerhandbuch SW-Version ab 3.1.0.73 MAYAH, CENTAURI, FLASHCAST sind eingetragene Warenzeichen. Alle anderen verwendeten Warenzeichen werden hiermit anerkannt. CENTAURI II Benutzerhandbuch ab SW 3.1.0.73 Bestell-Nr. CIIUM001 Stand 11/2005 (c) Copyright by MAYAH Communications GmbH Die Vervielfältigung des vorliegenden Handbuches, sowie der darin besprochenen Dokumentationen aus dem Internet, auch nur auszugsweise, ist nur mit ausdrücklicher schriftlicher Genehmigung der MAYAH Communications GmbH erlaubt. 1 Einführung ........................................................................................................... 1 1.1 Vorwort......................................................................................................... 1 1.2 Einbau / Installation ...................................................................................... 2 1.3 Lieferumfang ................................................................................................ 2 1.4 Umgebungs- / Betriebsbedingung................................................................ 2 1.5 Anschlüsse................................................................................................... 3 2 Verbindungsaufbau ............................................................................................. 4 2.1 ISDN Verbindungen mit dem Centauri II ...................................................... 4 2.1.1 FlashCast Technologie und Audiocodec Kategorien............................. 4 2.1.2 Wie bekomme ich eine synchronisierte Verbindung -
Breakthrough Propulsion Study Assessing Interstellar Flight Challenges and Prospects
Breakthrough Propulsion Study Assessing Interstellar Flight Challenges and Prospects NASA Grant No. NNX17AE81G First Year Report Prepared by: Marc G. Millis, Jeff Greason, Rhonda Stevenson Tau Zero Foundation Business Office: 1053 East Third Avenue Broomfield, CO 80020 Prepared for: NASA Headquarters, Space Technology Mission Directorate (STMD) and NASA Innovative Advanced Concepts (NIAC) Washington, DC 20546 June 2018 Millis 2018 Grant NNX17AE81G_for_CR.docx pg 1 of 69 ABSTRACT Progress toward developing an evaluation process for interstellar propulsion and power options is described. The goal is to contrast the challenges, mission choices, and emerging prospects for propulsion and power, to identify which prospects might be more advantageous and under what circumstances, and to identify which technology details might have greater impacts. Unlike prior studies, the infrastructure expenses and prospects for breakthrough advances are included. This first year's focus is on determining the key questions to enable the analysis. Accordingly, a work breakdown structure to organize the information and associated list of variables is offered. A flow diagram of the basic analysis is presented, as well as more detailed methods to convert the performance measures of disparate propulsion methods into common measures of energy, mass, time, and power. Other methods for equitable comparisons include evaluating the prospects under the same assumptions of payload, mission trajectory, and available energy. Missions are divided into three eras of readiness (precursors, era of infrastructure, and era of breakthroughs) as a first step before proceeding to include comparisons of technology advancement rates. Final evaluation "figures of merit" are offered. Preliminary lists of mission architectures and propulsion prospects are provided. -
The Search for Another Earth – Part II
GENERAL ARTICLE The Search for Another Earth – Part II Sujan Sengupta In the first part, we discussed the various methods for the detection of planets outside the solar system known as the exoplanets. In this part, we will describe various kinds of exoplanets. The habitable planets discovered so far and the present status of our search for a habitable planet similar to the Earth will also be discussed. Sujan Sengupta is an 1. Introduction astrophysicist at Indian Institute of Astrophysics, Bengaluru. He works on the The first confirmed exoplanet around a solar type of star, 51 Pe- detection, characterisation 1 gasi b was discovered in 1995 using the radial velocity method. and habitability of extra-solar Subsequently, a large number of exoplanets were discovered by planets and extra-solar this method, and a few were discovered using transit and gravi- moons. tational lensing methods. Ground-based telescopes were used for these discoveries and the search region was confined to about 300 light-years from the Earth. On December 27, 2006, the European Space Agency launched 1The movement of the star a space telescope called CoRoT (Convection, Rotation and plan- towards the observer due to etary Transits) and on March 6, 2009, NASA launched another the gravitational effect of the space telescope called Kepler2 to hunt for exoplanets. Conse- planet. See Sujan Sengupta, The Search for Another Earth, quently, the search extended to about 3000 light-years. Both Resonance, Vol.21, No.7, these telescopes used the transit method in order to detect exo- pp.641–652, 2016. planets. Although Kepler’s field of view was only 105 square de- grees along the Cygnus arm of the Milky Way Galaxy, it detected a whooping 2326 exoplanets out of a total 3493 discovered till 2Kepler Telescope has a pri- date. -
Optical Astronomy from Antarctica
PLEAS£ TYPE THE UNIVERSITY OF NEW SOUTH WALES Thesis/Project Report Sheet Surname or Fam ily name: Dempsey Fi rst name : Jessica Other name/s: Tui Abbreviation for degree as given in the University ca len dar : PhD School: Physics Faculty: Science Title : The view from the ice at the bottom of the world: Optical Astronomy from Antarctica Abstract 350 words maximum: (PLEAS£ TYPE) The high Antarctic plateau may offer the best site on earth for optical astronomy. This thesis work includes the construction of an infrared cloud-observing instrument, COBBER, which utilises a thermopile detector optimised at lOf.Lm. COBBER was installed at Dome C in January 2003. In 71 observing days, only four days of cloud were measured. A detailed study of the effect of auroral emission on optical observations is conducted. Analysis of auroral measurements at South Pole show that in an average winter season, the B band sky brightness is below 21.9 mag/arcsec2 for 50% of the observing time. In V band, the median sky brightness contribution is 20.8 mag/arcsec2 in an average winter. Calculations are used to show that at Dome C, the contribution to sky background in Band Vis up to 3.1 magnitudes less than at South Pole. The first optical stellar spectra observed from the high Antarctic plateau were taken at South Pole station with the Antarctic Fibre Optic Spectrometer (AFOS). The AFOS was installed on a dual telescope alt-az mount in January of 2003. A thorough instrument analysis revealed tower sinkage and telescope flexure problems that were overcome with more frequent pointing runs. -
On the Application of Stark Broadening Data Determined with a Semiclassical Perturbation Approach
Atoms 2014, 2, 357-377; doi:10.3390/atoms2030357 OPEN ACCESS atoms ISSN 2218-2004 www.mdpi.com/journal/atoms Article On the Application of Stark Broadening Data Determined with a Semiclassical Perturbation Approach Milan S. Dimitrijević 1,2,* and Sylvie Sahal-Bréchot 2 1 Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia 2 Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique, Observatoire de Paris, UMR CNRS 8112, UPMC, 5 Place Jules Janssen, 92195 Meudon Cedex, France; E-Mail: [email protected] (S.S.-B.) * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +381-64-297-8021; Fax: +381-11-2419-553. Received: 5 May 2014; in revised form: 20 June 2014 / Accepted: 16 July 2014 / Published: 7 August 2014 Abstract: The significance of Stark broadening data for problems in astrophysics, physics, as well as for technological plasmas is discussed and applications of Stark broadening parameters calculated using a semiclassical perturbation method are analyzed. Keywords: Stark broadening; isolated lines; impact approximation 1. Introduction Stark broadening parameters of neutral atom and ion lines are of interest for a number of problems in astrophysical, laboratory, laser produced, fusion or technological plasma investigations. Especially the development of space astronomy has enabled the collection of a huge amount of spectroscopic data of all kinds of celestial objects within various spectral ranges. Consequently, the atomic data for trace elements, which had not been -
Astrobiology Math
National Aeronautics andSpace Administration Aeronautics National Astrobiology Math This collection of activities is based on a weekly series of space science problems intended for students looking for additional challenges in the math and physical science curriculum in grades 6 through 12. The problems were created to be authentic glimpses of modern science and engineering issues, often involving actual research data. The problems were designed to be one-pagers with a Teacher’s Guide and Answer Key as a second page. This compact form was deemed very popular by participating teachers. Astrobiology Math Mathematical Problems Featuring Astrobiology Applications Dr. Sten Odenwald NASA / ADNET Corp. [email protected] Astrobiology Math i http://spacemath.gsfc.nasa.gov Acknowledgments: We would like to thank Ms. Daniella Scalice for her boundless enthusiasm in the review and editing of this resource. Ms. Scalice is the Education and Public Outreach Coordinator for the NASA Astrobiology Institute (NAI) at the Ames Research Center in Moffett Field, California. We would also like to thank the team of educators and scientists at NAI who graciously read through the first draft of this book and made numerous suggestions for improving it and making it more generally useful to the astrobiology education community: Dr. Harold Geller (George Mason University), Dr. James Kratzer (Georgia Institute of Technology; Doyle Laboratory) and Ms. Suzi Taylor (Montana State University), For more weekly classroom activities about astronomy and space visit the Space Math@ NASA website, http://spacemath.gsfc.nasa.gov Image Credits: Front Cover: Collage created by Julie Fletcher (NAI), molecule image created by Jenny Mottar, NASA HQ. -
Instruction Manual
iOptron® GEM28 German Equatorial Mount Instruction Manual Product GEM28 and GEM28EC Read the included Quick Setup Guide (QSG) BEFORE taking the mount out of the case! This product is a precision instrument and uses a magnetic gear meshing mechanism. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount. You must hold the mount firmly when disengaging or adjusting the gear switches. Otherwise personal injury and/or equipment damage may occur. Any worm system damage due to improper gear meshing/slippage will not be covered by iOptron’s limited warranty. If you have any questions please contact us at [email protected] WARNING! NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER! Looking at or near the Sun will cause instant and irreversible damage to your eye. Children should always have adult supervision while observing. 2 Table of Content Table of Content ................................................................................................................................................. 3 1. GEM28 Overview .......................................................................................................................................... 5 2. GEM28 Terms ................................................................................................................................................ 6 2.1. Parts List ................................................................................................................................................. -
Mars Culture Lore 1 the Martian Character
Mars Culture Lore Mars in the late 2250s and early 2260s has a population estimated at anywhere from 10 million to 15 million, making it the most populous planet in the Solar System after Earth and one of the most populous of all human worlds. It has been settled for almost a century and there are several fourth-generation Martians who can trace their ancestries back to John Carter's crew or even Carter himself. 1 The Martian Character The people on Mars are highly varied and there are few if any dominant `Marzie' traits. There is no well-defined Martian accent, for example, or broad stereotypical behaviour. The domes of Mars include Christians Jews, Muslims, Foundationists, atheists and others in roughly the same proportions as Earth, though there are a number of growing doctrinal differences. There are no unusual skewings in Martian sexual orientation or preferred practices, although families tend to have more children (despite the cramped conditions) and there is a slight but statistically meaningful reduction in the rate of divorce. In general, Martians tend to be more tolerant of private behaviour and less tolerant of public expressions of it. The cramped domes, tight tube trains, smallish public facilities and few open spaces mean that it is difficult to escape rude behaviour on the parts of others, from excessive body odor to second-hand smoke to loud music. What happens behind closed doors is considered to be nobody's business but in public Martians expect their neighbours to reduce the impact of their actions on each other. The general closeness of Martian life means that personal space is at a premium and that close contact is simply a part of day-to-day life. -
Centauri User Manual 1
CentauriCentauri High End Laser Power/Energy Meter User Manual Centauri Ophir Optronics Solutions Ltd. Table of Contents 1 Introduction ................................................................................................................... 5 1.1 This Document ............................................................................................................... 5 1.2 Related Documentation ................................................................................................ 5 1.3 Support .......................................................................................................................... 5 2 Quick Reference ............................................................................................................. 6 2.1 Getting Started .............................................................................................................. 6 2.2 Thermal Sensors ............................................................................................................ 7 2.2.1 Using Centauri with Thermal Sensors ................................................................ 7 2.2.2 Using Centauri to Measure Laser Power ........................................................... 7 2.2.3 Using Centauri to Measure Single Shot Energy ................................................. 7 2.3 Photodiode Sensors ....................................................................................................... 8 2.3.1 Using Centauri with Photodiode Sensors ......................................................... -
Handbook of the Heavens 1935.Pdf
PAGES MISSING WITHIN THE BOOK ONLY 59&60 ro OU 160401 5m OQ 1 CO OSMANIA UNIVERSITY LIBRARY Call No. S~< ?> Accession No. AuthorAih . This book should be returrted on or before the date last marked below. HANDBOOK OF THE H HAVENS Dana K. Bailey, J.A.C. CIRCUMPOLAR TRAILS. A small camera, focused with a magnifier, was placed upon the ground and pointed at the North Star and its neighbors. In an hour's exposure, the stars revealed the rotation of the earth by recording on the photographic plate a fraction of the apparent daily circle of each. The group arrangement of the Little Dipper with the Pole Star at the end of the handle has been indicated at the initial position and the trails show its subsequent motion. This picture was made with a fine lens in the clear desert air of southern Arizona, and the original negative shows the trails of forty stars within the diurnal circle of Polaris. Anyone with even a box camera can make similar pictures. HANDBOOK OF THE HEAVENS SPONSORED BY The ?American *%Cuseum of D^atural History Editors HUBERT J. BERNHARD Director of Publication^ftihior Astronomy Club DOROTHY A. Assistant Curator of thf llaydfn Planetarium', Adviser, Junior Astronomy Club HUGH S. RICE in Astrono Associate Astronomy, American. Museum, Sctrtl'fiJ'ic Associate , Junior WITH A * ORE WORD BY PROFESSOR HARLOW SHAPLEY l)irector t Harvard College Observatory New York WHITTLESEY HOUSE London MCGRAW-HILL BOOK COMPANY, INC. Copyright, 1935, by the McGRAW-HjLL BOOK COMPANY, INC. All rights reserved. This book, or parts thereof, may not be reproduced in any form without permission of the publishers SKCOM) PRINTING PUBLISHED BY WHITTLESEY HOUSE A division of the McGraw-Hill Book Company, Inc. -
Instruction Manual
iOptron® GEM45 German Equatorial Mount Instruction Manual Product GEM45 (#7600A series) and GEM45EC (#7600ECA series, as shown) Please read the included GEM45 Quick Setup Guide (QSG) BEFORE taking the mount out of the case! This product is a precision instrument. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount. You must hold the mount firmly when disengaging the gear switches. Otherwise personal injury and/or equipment damage may occur. Any worm system damage due to improper operation will not be covered by iOptron’s limited warranty. If you have any questions please contact us at [email protected] WARNING! NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER! Looking at or near the Sun will cause instant and irreversible damage to your eye. Children should always have adult supervision while using a telescope. 2 Table of Contents Table of Contents ........................................................................................................................................ 3 1. GEM45 Introduction ............................................................................................................................... 5 2. GEM45 Overview ................................................................................................................................... 6 2.1. Parts List .......................................................................................................................................... 6 2.2. Identification -
Deep-Sky Companions: the Messier Objects,Second Edition
Deep-Sky Companions Stephen James O’Meara Proof stage “Do not Distribute” DEEP-SKY COMPANIONS The Messier Objects, Second Edition The bright galaxies, star clusters, and nebulae cata- engaging and informative writing style and for his logued in the late 1700s by the famous comet hunter remarkable skills as a visual observer. O’Meara Charles Messier are still the most widely observed spent much of his early career on the editorial staff celestial wonders in the sky. The second edition of of Sky & Telescope before joining Astronomy mag- Stephen James O’Meara’s acclaimed observing guide azine as its Secret Sky columnist and a contribut- to the Messier objects features improved star charts ing editor. An award-winning visual observer, he for helping you find the objects, a much more robust was the first person to sight Halley’s comet upon telling of the history behind their discovery – includ- its return in 1985 and the first to determine visu- ing a glimpse into Messier’s fascinating life – and ally the rotation period of Uranus. One of his most updated astrophysical facts to put it all into con- distinguished feats was the visual detection of text. These additions, along with new photos taken the mysterious spokes in Saturn’s B-ring before with the most advanced amateur telescopes, bring spacecraft imaged them. Among his achieve- O’Meara’s first edition more than a decade into the ments, O’Meara has received the prestigious Lone twenty-first century. Expand your universe and test Stargazer Award, the Omega Centauri Award, and your viewing skills with this truly modern Messier the Caroline Herschel Award.