Detection and Characterization of Io's Atmosphere from High
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Kugelsternhaufen
www.vds-astro.de ISSN 1615-0880 IV/2010 Nr. 35 Zeitschrift der Vereinigung der Sternfreunde e.V. Schwerpunktthema Kugelsternhaufen Klein, rund und plump! Die Botschaft von den Grundlagen der JPG-Foto- Seite 54 Sternen metrie Seite 87 Seite 111 [email protected] • www.astro-shop.com Tel.: 040/5114348 • Fax: 040/5114594 Eiffestr. 426 • 20537 Hamburg Astroart 4.0 Canon EOS 1000D Astro Photoshop Astronomy Die aktuellste Version Ab sofort erhalten Sie bei uns speziell für die Der Autor arbeitet seit fast 10 Jahren mit Photo- des bekannten Bildbe- Astronomie modizierte Canon EOS Kameras, shop, um seine Astrofotos zu bearbeiten. Die arbeitungspro- ab Lager und mit Garantie! dabei gemachten Erfahrungen hat er in diesem grammes gibt es jetzt Die 1000D Astro hat eine um den Faktor 5 speziell auf die Bedürfnisse des Amateurastro- mit interessanten höhere Rotempndlichkeit im Bereich von nomen zugeschnitte- neuen Funktionen. H-alpha nen Buch gesammelt. Moderne Dateifor- bzw. SII. Die behandelten The- men sind unter ande- mate wie DSLR-RAW Endlich rem: die technische werden unterstützt, können Ausstattung, Farbma- Bilder können Regionen nagement, Histo- durch automa- am Himmel gramme, Maskie- tische Sternfelderken- sichtbar rungstechniken, nung direkt überlagert werden, was die Bild- gemacht Addition mehrerer feldrotation vernachlässigbar macht. Auch die werden, die Bilder, Korrektur von Bearbeitung von Farbbildern wurde erweitert. vorher auf Astroaufnahmen nur ansatzweise Vignettierungen, Besonderes Augenmerk liegt auf der Erken- sichtbar waren oder im Himmelshintergrund Farbhalos, Deformationen oder nung und Behandlung von Pixelfehlern der schlicht 'abgesoen' sind. Somit stellt die EOS überbelichteten Sternen, LRGB und vieles Aufnahme-Chips. 1000D Astro eine preisgünstige Alternative zu mehr. -
Sky-High 2009
Sky-High 2009 Total Solar Eclipse, 29th March 2006 The 17th annual guide to astronomical phenomena visible from Ireland during the year ahead (naked-eye, binocular and beyond) By John O’Neill and Liam Smyth Published by the Irish Astronomical Society € 5 P.O. Box 2547, Dublin 14, Ireland. e-mail: [email protected] www.irishastrosoc.org Page 1 Foreword Contents 3 Your Night Sky Primer We send greetings to all fellow astronomers and welcome them to this, the seventeenth edition of 5 Sky Diary 2009 Sky-High. 8 Phases of Moon; Sunrise and Sunset in 2009 We thank the following contributors for their 9 The Planets in 2009 articles: Patricia Carroll, John Flannery and James O’Connor. The remaining material was written by 12 Eclipses in 2009 the editors John O’Neill and Liam Smyth. The Gal- 14 Comets in 2009 lery has images and drawings by Society members. The times of sunrise etc. are from SUNRISE by J. 16 Meteors Showers in 2009 O’Neill. 17 Asteroids in 2009 We are always glad to hear what you liked, or 18 Variable Stars in 2009 what you would like to have included in Sky-High. If we have slipped up on any matter of fact, let us 19 A Brief Trip Southwards know. We can put a correction in future issues. And if you have any problem with understanding 20 Deciphering Star Names the contents or would like more information on 22 Epsilon Aurigae – a long period variable any topic, feel free to contact us at the Society e- mail address [email protected]. -
The Observer, November
The OBSERVER The Newsletter of the Twin City Amateur Astronomers, Inc. November 2001 Volume 26, Number 11 Adventures in Meteor Hunting — Duane Yockey In This Issue: REETINGS to my brother and and binoculars just in case the meteors sister sky watchers, didn't live up to their billing. Saturday G was clear here in central Illinois, and • Meteor Hunting Adventures ...1 when I got back from a Duane shows that he has the The long awaited day play at Illinois State right stuff as he tears after the of the Leonid meteor University around Leonids and finds them! shower arrived Satur- 10:30 p.m. the sky was day. I was really still showing lots of • TCAA Calendar ........................1 looking forward to stars. I called Laura Use our calendar to mark going out to the (my oldest daughter), your calendar. observatory with who said the skies were other Twin City clear down in southern • TCAA Annual Holiday Bash....3 Amateur Indiana and I could Party like it’s, um, 2001, at Astronomers and see- drive down there, if the Vic & Cindy’s! ............................ ing the "show" from clouds rolled in (ha, 2:00 a.m. to 6:00 a.m. ha). I assured her that • Club Notes................................4 early Sunday morn- the sky would cooper- Wow, it’s been a busy month! ing. So I packed my ate, and it was looking car early with a lawn good then, and I wished • Software Review: DSE ...........5 chair and threw in my her good luck (if she And just think, if you never telescope, star charts turn to page 5, you’ll never know continued on next page what DSE stands for.. -
Galileo Reveals Best-Yet Europa Close-Ups Stone Projects A
II Stone projects a prom1s1ng• • future for Lab By MARK WHALEN Vol. 28, No. 5 March 6, 1998 JPL's future has never been stronger and its Pasadena, California variety of challenges never broader, JPL Director Dr. Edward Stone told Laboratory staff last week in his annual State of the Laboratory address. The Laboratory's transition from an organi zation focused on one large, innovative mission Galileo reveals best-yet Europa close-ups a decade to one that delivers several smaller, innovative missions every year "has not been easy, and it won't be in the future," Stone acknowledged. "But if it were easy, we would n't be asked to do it. We are asked to do these things because they are hard. That's the reason the nation, and NASA, need a place like JPL. ''That's what attracts and keeps most of us here," he added. "Most of us can work elsewhere, and perhaps earn P49631 more doing so. What keeps us New images taken by JPL's The Conamara Chaos region on Europa, here is the chal with cliffs along the edges of high-standing Galileo spacecraft during its clos lenge and the ice plates, is shown in the above photo. For est-ever flyby of Jupiter's moon scale, the height of the cliffs and size of the opportunity to do what no one has done before Europa were unveiled March 2. indentations are comparable to the famous to search for life elsewhere." Europa holds great fascination cliff face of South Dakota's Mount To help achieve success in its series of pro for scientists because of the Rushmore. -
Active Volcanism on Io: Global Distribution and Variations in Activity
Icarus 140, 243–264 (1999) Article ID icar.1999.6129, available online at http://www.idealibrary.com on Active Volcanism on Io: Global Distribution and Variations in Activity Rosaly Lopes-Gautier Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 E-mail: [email protected] Alfred S. McEwen Department of Planetary Sciences, Lunar and Planetary Laboratory, University of Arizona, P. O. Box 210092, Tucson, Arizona 85721-0092 William B. Smythe Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 P. E. Geissler Department of Planetary Sciences, Lunar and Planetary Laboratory, University of Arizona, P. O. Box 210092, Tucson, Arizona 85721-0092 L. Kamp and A. G. Davies Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 J. R. Spencer Lowell Observatory, Flagstaff, Arizona 86001 L. Keszthelyi Department of Planetary Sciences, Lunar and Planetary Laboratory, University of Arizona, P. O. Box 210092, Tucson, Arizona 85721-0092 R. Carlson Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 F. E. Leader and R. Mehlman Institute of Geophysics and Planetary Physics, University of California—Los Angeles, Los Angeles, California 90095 L. Soderblom Branch of Astrogeologic Studies, U.S. Geological Survey, Flagstaff, Arizona 86001 and The Galileo NIMS and SSI Teams Received June 23, 1998; revised February 10, 1999 in 1979. A total of 61 active volcanic centers have been identified Io’s volcanic activity has been monitored by instruments aboard from Voyager, groundbased, and Galileo observations. Of these, 41 the Galileo spacecraft since June 28, 1996. We present results from are hot spots detected by NIMS and/or SSI. -
October 2015 BRAS Newsletter
October, 2015 Next Meeting: Monday, Oct. 12th at 7pm at the HRPO Lunar Eclipse on Sept 27th, 2015. Image by BRAS member David Leadingham, one of the few that got a clear view for a couple of minutes through the clouds in our area! Click on the pic for more info on upcoming eclipses What's In This Issue? President's Message AstroShort: Simulating the Universe Secretary's Summary of Sept. Meeting Message From the HRPO Recent BRAS Forum Entries 20/20 Vision Campaign Observing Notes by John Nagle (He's Back!) President's Message “Astronomy is useful because it raises us above ourselves; it is useful because it is grand. It shows us how small is man’s body, how great his mind, since his intelligence can embrace the whole of this dazzling immensity, where his body is only an obscure point, and enjoy its silent harmony." – Henri Poincare, 19th Century mathematician and physicist We all have our reasons for being involved in astronomy. That quote elegantly expresses just one man’s thoughts. What attracted you to astronomy? What do you tell people who ask? I think we all have experienced some indefinable draw to the night sky and the wonders of the universe. Maybe that is it. Wonder. At least for me it is. Wonder, beauty, harmony, perspective. Where does it end? Think about those things and let me know if you have something about that you would like to say at our next meeting. Alternately, you could write up something for this newsletter. Well the total lunar eclipse certainly was a washout. -
Michael H. Wong Abstract Science Programs Requirements for PDX
A Dedicated Space Telescope for Time-Domain Solar System Science Máté Ádámkovics Gordon Bjoraker Leigh N. Fletcher Erich Karkoschka Julianne I. Moses Joachim Saur Nathan J. Strange Michael H. Wong UC Berkeley NASA GSFC JPL Univ. Arizona LPI Univ. Cologne JPL mikewong@ astro.berkeley.edu STScI (Instruments Division) Sushil K. Atreya John R. Casani Richard G. French Jian-Yang Li Keith Noll Kunio Sayanagi Anne Verbiscer UC Berkeley (Astronomy Department) Univ. Mich. JPL Wellesley Univ. Maryland STScI Caltech Univ. Virginia Don Banfield John T. Clarke William Grundy Franck Marchis Glenn S. Orton Nick Schneider Padmavati A. Yanamandra-Fisher Cornell Boston Univ. Lowell SETI/UC Berkeley JPL CU JPL Jim Bell Imke de Pater Amanda R. Hendrix Melissa A. McGrath Kathy A. Rages Eric H. Smith Cornell UC Berkeley JPL NASA MSFC SETI Lockheed Martin Susan Benecchi Scott G. Edgington Daniel Hestroffer William J. Merline Kurt Retherford Lawrence A. Sromovsky STScI JPL Obs. Paris Meudon SwRI SWRI UW-Madison Abstract Requirements for PDX Resolution / sensitivity / volume trades Time-variable phenomena with scales ranging from minutes to The chief requirements for time-domain solar system science are angular resolution, For most space telescope missions, photometric sensitivity is a major requirement. For time-domain solar system decades have led to a large fraction of recent advances in many sampling interval, and campaign duration. Although many ground- and space-based astronomy, a trade can be studied between sensitivity and payload volume, since relatively bright solar system aspects of solar system science. We present the scientific telescopes satisfy the angular resolution requirement, only a dedicated solar system targets are less demanding of sensitivity. -
Keck AO Survey of Io Global Volcanic Activity Between 2 and 5 Mu M
Keck AO Survey of Io Global Volcanic Activity between 2 and 5µm F. Marchis Astronomy Department, University of California, Berkeley, California 94720-3411, U.S.A. and D. Le Mignant W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, Hawaii 96743, U.S.A. and F. H. Chaffee W.M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela HI96743, U.S.A. and A.G. Davies Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, California 91109-8099, U.S.A. and S. H. Kwok W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, Hawaii 96743, U.S.A. – 2 – and R. Prang´e Institut d’Astrophysique Spatiale, bat.121, Universit´eParis Sud, 91405 Orsay Cedex, France and I. de Pater Astronomy Department, University of California, Berkeley, California 94720-3411, U.S.A. and P. Amico W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, Hawaii 96743, U.S.A. and R. Campbell W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, Hawaii 96743, U.S.A. and T. Fusco ONERA, DOTA-E, BP 72, F-92322 Chatillon, France and – 3 – R. W. Goodrich W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, Hawaii 96743, U.S.A. and A. Conrad W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, Hawaii 96743, U.S.A. Received ; accepted Manuscript: 82 pages; 7 tables, 6 figures – 4 – Running title: Keck AO Survey of Io Global Volcanic Activity between 2 and 5 µm Send correspondence to F. Marchis, University of California at Berkeley, Department of Astronomy, 601 Campbell Hall, Berkeley, CA 94720, USA tel: +1 510 642 3958 e-mail: [email protected] ABSTRACT We present in this Keck AO paper the first global high angular resolution observations of Io in three broadband near-infrared filters: Kc (2.3 µm), Lp (3.8 µm) and Ms (4.7 µm). -
The Astrology of Space
The Astrology of Space 1 The Astrology of Space The Astrology Of Space By Michael Erlewine 2 The Astrology of Space An ebook from Startypes.com 315 Marion Avenue Big Rapids, Michigan 49307 Fist published 2006 © 2006 Michael Erlewine/StarTypes.com ISBN 978-0-9794970-8-7 All rights reserved. No part of the publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the publisher. Graphics designed by Michael Erlewine Some graphic elements © 2007JupiterImages Corp. Some Photos Courtesy of NASA/JPL-Caltech 3 The Astrology of Space This book is dedicated to Charles A. Jayne And also to: Dr. Theodor Landscheidt John D. Kraus 4 The Astrology of Space Table of Contents Table of Contents ..................................................... 5 Chapter 1: Introduction .......................................... 15 Astrophysics for Astrologers .................................. 17 Astrophysics for Astrologers .................................. 22 Interpreting Deep Space Points ............................. 25 Part II: The Radio Sky ............................................ 34 The Earth's Aura .................................................... 38 The Kinds of Celestial Light ................................... 39 The Types of Light ................................................. 41 Radio Frequencies ................................................. 43 Higher Frequencies ............................................... -
Astronomy News
Astronomy News Night Sky 2019 - February Sunrise Sunset Mercury Sets Venus Rises st st th st 1 – 7:48am 1 – 5:01pm 10 – 5:55pm 1 – 5:04am th th th th 10 – 7:34am 10 – 5:17pm 15 – 6:29pm 10 – 5:16am th th th th 20 – 7:15am 20 – 5:35pm 20 – 7:00pm 20 – 5:23am th th th th 28 – 6:58am 28 – 5:49pm 25 – 7:23pm 28 – 5:25am Moon Rise Moon Set Moon Rise Moon Set st st th th 1 – 5:32am 1 – 1:56pm 15 – 12:34pm 16 – 5:02am nd nd th th 2 – 6:23am 2 – 2:46pm 16 – 1:31pm 17 – 6:00am rd rd th th 3 – 7:07am 3 – 3:42pm 17 – 2:40pm 18 – 6:49am th th th th 4 – 7:44am (New) 4 – 4:42pm (New) 18 – 4:00pm 19 – 7:28am (Full) th th th th 5 – 8:14am 5 – 5:45pm 19 – 5:24pm (Full) 20 – 8:00am th th th st 6 – 8:40am 6 – 6:49pm 20 – 6:49pm 21 – 8:27am th th st nd 7 – 9:02am 7 – 7:54pm 21 – 8:13pm 22 – 8:52am th th nd rd 8 – 9:22am 8 – 9:00pm 22 – 9:34pm 23 – 9:16am th th rd th 9 – 9:42am 9 – 10:05pm 23 – 10:52pm 24 – 9:41am th th th th 10 – 10:01am 10 – 11:12pm 25 – 12:07am 25 – 10:07am th th th th 11 – 10:22am 12 – 12:21am (FQ) 26 – 1:19am (LQ) 26 – 10:37am (LQ) th th th th 12 – 10:46am (FQ) 13 – 1:32am 27 – 2:26am 27 – 11:12am th th th th 13 – 11:14am 14 – 2:44am 28 – 3:27am 28 – 11:54am th th 14 – 11:49am 15 – 3:55am A useful site: www.heavens- above.com A S Zielonka There is an uncrewed test flight this month of the Commercial Crew Program which will provide data on the performance of the Falcon 9 rocket, Crew Dragon spacecraft, and ground systems, as well as on- orbit, docking and landing operations. -
Meteor Activity Outlook for November 14-20, 2020
Meteor Activity Outlook for November 14-20, 2020 During this period, the moon reaches its new phase on Sunday November 15th. At this time, the moon is located near the sun and is invisible at night. As this period progresses, the waxing crescent moon will enter the evening sky but will not interfere with meteor observations, especially during the more active morning hours. The estimated total hourly meteor rates for evening observers this week is near 4 as seen from mid-northern latitudes and 3 as seen from tropical southern locations (25S). For morning observers, the estimated total hourly rates should be near 20 as seen from mid- northern latitudes (45N) and 14 as seen from tropical southern locations (25S). The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness, and experience in watching meteor activity. Note that the hourly rates listed below are estimates as viewed from dark sky sites away from urban light sources. Observers viewing from urban areas will see less activity as only the brighter meteors will be visible from such locations. The radiant (the area of the sky where meteors appear to shoot from) positions and rates listed below are exact for Saturday night/Sunday morning November 14/15. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. -
Radiant Flux from Earth's Subaerially Erupting Volcanoes
International Journal of Remote Sensing Vol. 29, No. 22, 20 November 2008, 6443–6466 Radiant flux from Earth’s subaerially erupting volcanoes R. WRIGHT* and E. PILGER Hawaii Institute of Geophysics and Planetology, Honolulu, Hawaii, USA During the past decade an average of 60 volcanoes erupted each year, around 20 of which were erupting on any given day. Some of these, such as Erta Ale in Ethiopia, are persistently active, whereas others, such as Bezymianny in Russia, erupt more sporadically. Satellite remote sensing offers a convenient way to monitor changes in the thermal budgets of these volcanoes from space. Using data acquired by the National Aeronautics and Space Administration (NASA) Moderate Resolution Imaging Spectroradiometer (MODIS) sensor, we show how the amount of heat radiated into the Earth’s atmosphere by 65 active volcanoes has varied between 26 February 2000 and 31 December 2006. We find that the radiant volcanic heat flux into the atmosphere occurs at a relatively steady-state baseline level, superimposed on which are large thermal emission ‘spikes’. These anomalous emission events are associated with the emplacement of basaltic ‘a’a lava flows at volcanoes such as Mount Etna, Italy, and Nyamuragira, in the Democratic Republic of Congo. We also demonstrate how these data can be used to estimate lava effusion rates during effusive eruptions, and magma flux rates at persistently active volcanoes that host active lava lakes. 1. Introduction In addition to the eruption of lava and volatiles, active volcanoes emit copious amounts of thermal energy. A volcano that becomes active after a period of quiescence invariably exhibits an increase in geothermal heat flux, during either the emplacement of shallow intrusions (which increase in the vigour of pre-existing hydrothermal systems) or the actual eruption of lava.