Prime Focus Year Continues Through November 7Th
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Today Our Place in the Universe
Our place in the Universe , and other sources ully T , Bob Patterson, Donna Cox (NCSA), Data: Hipparcos, Brent iz: Stuart Levy V Tom Abel Today KIPAC The Birth, Life & Aftermath of the First Stars Tom Abel KIPAC/Stanford work with Matt Turk (Birth) John Wise (Life) Ralf Kähler (Scientific Visualization) Outline • Conception • A difficult birth • A surprising life • Remarkable consequences • Three-D radiation transport around point sources • Spatially & temporally structured adaptive cosmological & relativistic hydrodynamics • public version of enzo at: http://lca.ucsd.edu/portal/software/enzo Discovery by How we find things: Computer? 6 6.28 Conception Physics problem: • Initial Conditions: COBE/ACBAR/ Boomerang/WMAP/CfA/SDDS/ 2DF/CDMS/DAMA/Edelweiss/... + Theory: Constituents, Density Fluctuations, Thermal History • Physics: Gravity, MHD, Chemistry, Radiative Cooling, Radiation Transport, Cosmic Rays, Dust drift & cooling, Supernovae, Stellar evolution, etc. Ralf Kähler & Tom Abel for PBS • Transition from Linear to Non- Origins. Aired Dec 04 Linear: • Using patched based structured adaptive (space & time) mesh refinement Making a proto-star Simulation: Tom Abel (KIPAC/Stanford), Greg Bryan (Columbia), Mike Norman (UCSD) Viz: Ralf Kähler (AEI, ZIB, KIPAC), Bob Patterson, Stuart Levy, Donna Cox (NCSA), Tom Abel © “The Unfolding Universe” Discovery Channel 2002 Dynamic range ~1e12. Typically 3 solar mass dm particles > 30 levels of refinement > 8 cells per local Jeans Length tens of thousands of grid patches non-equilibrium chemistry dynamically load balanced RT effects above 1e12 cm-3 Zoom in MPI. 16 processors enough Turk & Abel in prep Note disks within disks happen routinely in turbulent collapses! Mass Scales? Kelvin Helmholtz time at ZAMS Abel, Bryan & Norman 2002 Recap First Stars are isolated and very massive • Theoretical uncertainty: 30 - 300 solar mass Many simulations with three different numerical techniques and a large range of numerical resolutions have converged to this result. -
October, 2011
IN THIS ISSUE: OCTOBER 2011 Event Calendar, News Notes Minutes of the September Meeting MVAS Reminders: Party-on MVAS Activities: On The Road Again Observer’s Notes: Variable Heroines MVAS Homework: M-76, Little Dumbbell Homework Charts: Algol, asteroid (15) Eunomia Constellation of the Month: Perseus November 2011 Sky Almanac Gallery: Comet Quest, Summer Photos Meteorite Editor: Phil Plante 1982 Mathews Rd. #2 Youngstown OH 44514 OCTOBER 2011 NEWS NOTES Newsletter of the Mahoning Valley Astronomical Society, Inc. The Big Ear. Lofar (Low Frequency Array) is a new kind of radio telescope. It can see radio waves with low frequencies, similar to those that give us FM radio. Rather than collecting MVAS CALENDAR signals from individual radio sources, Lofar continuously monitors large swathes of sky. Lofar is more sensitive to the OCT 22 Business meeting at the MVCO 8:00 PM longest observable radio waves than any other telescope. It can OCT 29 Halloween Party at the MVCO 7:00 PM see many billions of light years out into space, back to the time before the first stars formed, a few hundred million years after NOV17/18 Leonid Meteor watch. On your own? Midnight… the Big Bang. On Monday, September 21, 2011, Sweden's Minister for Education and Research, Jan Bjorklund, opened the NOV 19 Business meeting at YSU. Show at 8:00 PM Onsala Space Observatory's newest telescope; to become part NOV 26 Star Party at the MVCO. 7:00 PM till…. of Lofar, which is the world's largest radio telescope. The 192 new radio antennas at Onsala's Lofar station will be linked together with 47 similar stations over the whole of NATIONAL & REGIONAL EVENTS Europe, and sent over the Internet to a central supercomputer in OCT 24 - 30 CSPG Fall Star Party, held in Chiefland, FL . -
List of Bright Nebulae Primary I.D. Alternate I.D. Nickname
List of Bright Nebulae Alternate Primary I.D. Nickname I.D. NGC 281 IC 1590 Pac Man Neb LBN 619 Sh 2-183 IC 59, IC 63 Sh2-285 Gamma Cas Nebula Sh 2-185 NGC 896 LBN 645 IC 1795, IC 1805 Melotte 15 Heart Nebula IC 848 Soul Nebula/Baby Nebula vdB14 BD+59 660 NGC 1333 Embryo Neb vdB15 BD+58 607 GK-N1901 MCG+7-8-22 Nova Persei 1901 DG 19 IC 348 LBN 758 vdB 20 Electra Neb. vdB21 BD+23 516 Maia Nebula vdB22 BD+23 522 Merope Neb. vdB23 BD+23 541 Alcyone Neb. IC 353 NGC 1499 California Nebula NGC 1491 Fossil Footprint Neb IC 360 LBN 786 NGC 1554-55 Hind’s Nebula -Struve’s Lost Nebula LBN 896 Sh 2-210 NGC 1579 Northern Trifid Nebula NGC 1624 G156.2+05.7 G160.9+02.6 IC 2118 Witch Head Nebula LBN 991 LBN 945 IC 405 Caldwell 31 Flaming Star Nebula NGC 1931 LBN 1001 NGC 1952 M 1 Crab Nebula Sh 2-264 Lambda Orionis N NGC 1973, 1975, Running Man Nebula 1977 NGC 1976, 1982 M 42, M 43 Orion Nebula NGC 1990 Epsilon Orionis Neb NGC 1999 Rubber Stamp Neb NGC 2070 Caldwell 103 Tarantula Nebula Sh2-240 Simeis 147 IC 425 IC 434 Horsehead Nebula (surrounds dark nebula) Sh 2-218 LBN 962 NGC 2023-24 Flame Nebula LBN 1010 NGC 2068, 2071 M 78 SH 2 276 Barnard’s Loop NGC 2149 NGC 2174 Monkey Head Nebula IC 2162 Ced 72 IC 443 LBN 844 Jellyfish Nebula Sh2-249 IC 2169 Ced 78 NGC Caldwell 49 Rosette Nebula 2237,38,39,2246 LBN 943 Sh 2-280 SNR205.6- G205.5+00.5 Monoceros Nebula 00.1 NGC 2261 Caldwell 46 Hubble’s Var. -
Patrick Moore's Practical Astronomy Series
Patrick Moore’s Practical Astronomy Series Other Titles in this Series Telescopes and Techniques (2nd Edn.) Observing the Planets Chris Kitchin Peter T. Wlasuk The Art and Science of CCD Astronomy Light Pollution David Ratledge (Ed.) Bob Mizon The Observer’s Year Using the Meade ETX Patrick Moore Mike Weasner Seeing Stars Practical Amateur Spectroscopy Chris Kitchin and Robert W. Forrest Stephen F. Tonkin (Ed.) Photo-guide to the Constellations More Small Astronomical Observatories Chris Kitchin Patrick Moore (Ed.) The Sun in Eclipse Observer’s Guide to Stellar Evolution Michael Maunder and Patrick Moore Mike Inglis Software and Data for Practical Astronomers How to Observe the Sun Safely David Ratledge Lee Macdonald Amateur Telescope Making The Practical Astronomer’s Deep-Sky Stephen F. Tonkin (Ed.) Companion Observing Meteors, Comets, Supernovae and Jess K. Gilmour other Transient Phenomena Observing Comets Neil Bone Nick James and Gerald North Astronomical Equipment for Amateurs Observing Variable Stars Martin Mobberley Gerry A. Good Transit: When Planets Cross the Sun Visual Astronomy in the Suburbs Michael Maunder and Patrick Moore Antony Cooke Practical Astrophotography Astronomy of the Milky Way: The Observer’s Jeffrey R. Charles Guide to the Northern and Southern Milky Way Observing the Moon (2 volumes) Peter T. Wlasuk Mike Inglis Deep-Sky Observing The NexStar User Guide Steven R. Coe Michael W. Swanson AstroFAQs Observing Binary and Double Stars Stephen F. Tonkin Bob Argyle (Ed.) The Deep-Sky Observer’s Year Navigating the Night Sky Grant Privett and Paul Parsons Guilherme de Almeida Field Guide to the Deep Sky Objects The New Amateur Astronomer Mike Inglis Martin Mobberley Choosing and Using a Schmidt-Cassegrain Care of Astronomical Telescopes and Telescope Accessories Rod Mollise M. -
198 7Apjs. . .63. .645U the Astrophysical Journal Supplement
.645U The Astrophysical Journal Supplement Series, 63:645-660,1987 March © 1987. The American Astronomical Society. All rights reserved. Printed in U.S.A. .63. 7ApJS. A CO SURVEY OF THE DARK NEBULAE IN PERSEUS, TAURUS, AND AURIGA 198 H. Ungerechts and P. Thaddeus Goddard Institute for Space Studies and Columbia University Received 1986 February 20; accepted 1986 September 4 ABSTRACT A region of 750 square degrees including the well-known dark nebulae in Perseus, Taurus, and Auriga was surveyed in the 115 GHz, J = l-0 line of CO at an angular resolution of 0?5. The spectral resolution of the survey is 250 kHz, or 0.65 km s-1, and the rms noise per spectrometer channel is 0.14 K. Emission was detected from nearly 50% of the observed positions; most positions with emission are in the Taurus-Auriga dark nebulae, a cloud associated with IC 348 and NGC 1333, and a cloud associated with the California nebula (NGC 1499) and NGC 1579, which overlaps the northern Taurus-Auriga nebulae but is separated from them in velocity. Other objects seen in this survey are several small clouds at Galactic latitude —25° to —35° southwest of the Taurus clouds, and the L1558 and L1551 clouds in the south. The mass of each of the IC 348 and NGC 1499 4 4 clouds is about 5X10 M0, and that of the Taurus-Auriga clouds about 3.5 X10 M0; the total mass of all 5 clouds surveyed is about 2x10 Af0. On a large scale, the rather quiescent Taurus clouds are close to virial equilibrium, but the IC 348 and NGC 1499 clouds are more dynamically active. -
GTO Keypad Manual, V5.001
ASTRO-PHYSICS GTO KEYPAD Version v5.xxx Please read the manual even if you are familiar with previous keypad versions Flash RAM Updates Keypad Java updates can be accomplished through the Internet. Check our web site www.astro-physics.com/software-updates/ November 11, 2020 ASTRO-PHYSICS KEYPAD MANUAL FOR MACH2GTO Version 5.xxx November 11, 2020 ABOUT THIS MANUAL 4 REQUIREMENTS 5 What Mount Control Box Do I Need? 5 Can I Upgrade My Present Keypad? 5 GTO KEYPAD 6 Layout and Buttons of the Keypad 6 Vacuum Fluorescent Display 6 N-S-E-W Directional Buttons 6 STOP Button 6 <PREV and NEXT> Buttons 7 Number Buttons 7 GOTO Button 7 ± Button 7 MENU / ESC Button 7 RECAL and NEXT> Buttons Pressed Simultaneously 7 ENT Button 7 Retractable Hanger 7 Keypad Protector 8 Keypad Care and Warranty 8 Warranty 8 Keypad Battery for 512K Memory Boards 8 Cleaning Red Keypad Display 8 Temperature Ratings 8 Environmental Recommendation 8 GETTING STARTED – DO THIS AT HOME, IF POSSIBLE 9 Set Up your Mount and Cable Connections 9 Gather Basic Information 9 Enter Your Location, Time and Date 9 Set Up Your Mount in the Field 10 Polar Alignment 10 Mach2GTO Daytime Alignment Routine 10 KEYPAD START UP SEQUENCE FOR NEW SETUPS OR SETUP IN NEW LOCATION 11 Assemble Your Mount 11 Startup Sequence 11 Location 11 Select Existing Location 11 Set Up New Location 11 Date and Time 12 Additional Information 12 KEYPAD START UP SEQUENCE FOR MOUNTS USED AT THE SAME LOCATION WITHOUT A COMPUTER 13 KEYPAD START UP SEQUENCE FOR COMPUTER CONTROLLED MOUNTS 14 1 OBJECTS MENU – HAVE SOME FUN! -
Searching for Comets on the World Wide Web: the Orbit of 17P/Holmes from the Behavior of Photographers
Searching for comets on the World Wide Web: The orbit of 17P/Holmes from the behavior of photographers Dustin Lang1;2 & David W. Hogg3;4 ABSTRACT We performed an image search for \Comet Holmes," using the Yahoo! Web search engine, on 2010 April 1. Thousands of images were returned. We as- trometrically calibrated|and therefore vetted|the images using the Astrom- etry.net system. The calibrated image pointings form a set of data points to which we can fit a test-particle orbit in the Solar System, marginalizing over image dates and detecting outliers. The approach is Bayesian and the model is, in essence, a model of how comet astrophotographers point their instruments. In this work, we do not measure the position of the comet within each image, but rather use the celestial position of the whole image to infer the orbit. We find very strong probabilistic constraints on the orbit, although slightly off the JPL ephemeris, probably due to limitations of our model. Hyperparameters of the model constrain the reliability of date meta-data and where in the image astrophotographers place the comet; we find that 70 percent of the meta-data ∼ are correct and that the comet typically appears in the central third of the image footprint. This project demonstrates that discoveries and measurements can be made using data of extreme heterogeneity and unknown provenance. As the size and diversity of astronomical data sets continues to grow, approaches like ours will become more essential. This project also demonstrates that the Web is an enormous repository of astronomical information; and that if an object has been given a name and photographed thousands of times by observers who post their images on the Web, we can (re-)discover it and infer its dynamical properties. -
December 2019 BRAS Newsletter
A Monthly Meeting December 11th at 7PM at HRPO (Monthly meetings are on 2nd Mondays, Highland Road Park Observatory). Annual Christmas Potluck, and election of officers. What's In This Issue? President’s Message Secretary's Summary Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night Member’s Corner – The Green Odyssey Messages from the HRPO Friday Night Lecture Series Science Academy Solar Viewing Stem Expansion Transit of Murcury Edge of Night Natural Sky Conference Observing Notes: Perseus – Rescuer Of Andromeda, or the Hero & Mythology Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society Baton Rouge Astronomical Society Newsletter, Night Visions Page 2 of 25 December 2019 President’s Message I would like to thank everyone for having me as your president for the last two years . I hope you have enjoyed the past two year as much as I did. We had our first Members Only Observing Night (MOON) at HRPO on Sunday, 29 November,. New officers nominated for next year: Scott Cadwallader for President, Coy Wagoner for Vice- President, Thomas Halligan for Secretary, and Trey Anding for Treasurer. Of course, the nominations are still open. If you wish to be an officer or know of a fellow member who would make a good officer contact John Nagle, Merrill Hess, or Craig Brenden. We will hold our annual Baton Rouge “Gastronomical” Society Christmas holiday feast potluck and officer elections on Monday, December 9th at 7PM at HRPO. I look forward to seeing you all there. ALCon 2022 Bid Preparation and Planning Committee: We’ll meet again on December 14 at 3:00.pm at Coffee Call, 3132 College Dr F, Baton Rouge, LA 70808, UPCOMING BRAS MEETINGS: Light Pollution Committee - HRPO, Wednesday December 4th, 6:15 P.M. -
7.5 X 11.5.Threelines.P65
Cambridge University Press 978-0-521-19267-5 - Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer’s New General Catalogue Wolfgang Steinicke Index More information Name index The dates of birth and death, if available, for all 545 people (astronomers, telescope makers etc.) listed here are given. The data are mainly taken from the standard work Biographischer Index der Astronomie (Dick, Brüggenthies 2005). Some information has been added by the author (this especially concerns living twentieth-century astronomers). Members of the families of Dreyer, Lord Rosse and other astronomers (as mentioned in the text) are not listed. For obituaries see the references; compare also the compilations presented by Newcomb–Engelmann (Kempf 1911), Mädler (1873), Bode (1813) and Rudolf Wolf (1890). Markings: bold = portrait; underline = short biography. Abbe, Cleveland (1838–1916), 222–23, As-Sufi, Abd-al-Rahman (903–986), 164, 183, 229, 256, 271, 295, 338–42, 466 15–16, 167, 441–42, 446, 449–50, 455, 344, 346, 348, 360, 364, 367, 369, 393, Abell, George Ogden (1927–1983), 47, 475, 516 395, 395, 396–404, 406, 410, 415, 248 Austin, Edward P. (1843–1906), 6, 82, 423–24, 436, 441, 446, 448, 450, 455, Abbott, Francis Preserved (1799–1883), 335, 337, 446, 450 458–59, 461–63, 470, 477, 481, 483, 517–19 Auwers, Georg Friedrich Julius Arthur v. 505–11, 513–14, 517, 520, 526, 533, Abney, William (1843–1920), 360 (1838–1915), 7, 10, 12, 14–15, 26–27, 540–42, 548–61 Adams, John Couch (1819–1892), 122, 47, 50–51, 61, 65, 68–69, 88, 92–93, -
Tim Hutchison
Photonic Cleaning Technologies presents: Tim Hutchison The Horsehead and Flame I have always been a photography enthusiast. In my early 20’s I began getting serious about landscape and nature photography. However, my family and my professional career as the founder and CEO of a small software company consumed the majority of my time. Photography for me was always a side hobby. I was fortunate to be able to retire at 50 years of age. One day, after breakfast, I made the mistake of suggesting a better way to load the dishwasher to my wife. I was politely (ahem) told that she “...did not need someone to CEO the house...” and that perhaps I should find a team to coach, or something else to keep busy. That year, she purchased a Celestron Edge HD8 telescope for me as a birthday gift. I was absolutely hooked the very first night. My first attempt at astrophotography was an absolutely terrible image of M42 taken with a Nikon D810 (unmodified). Still, I was so excited that I couldn’t wait to get out the next night. Like everyone in this hobby, I proceeded to purchase more and more gear. I live in a suburb of Pittsburgh, PA where we have a lot of cloudy nights and bortle 5-ish skies. While I still have the Edge HD8, my current main telescope here in the backyard is a Takahashi TOA-130, a 10Micron IC1318a in Cygnus GM1000-HPS mount, QHY600M camera, and Filters from Chroma Technologies. I built a small roll-off- roof observatory in my backyard to house this rig. -
108 Afocal Procedure, 105 Age of Globular Clusters, 25, 28–29 O
Index Index Achromats, 70, 73, 79 Apochromats (APO), 70, Averted vision Adhafera, 44 73, 79 technique, 96, 98, Adobe Photoshop Aquarius, 43, 99 112 (software), 108 Aquila, 10, 36, 45, 65 Afocal procedure, 105 Arches cluster, 23 B1620-26, 37 Age Archinal, Brent, 63, 64, Barkhatova (Bar) of globular clusters, 89, 195 catalogue, 196 25, 28–29 Arcturus, 43 Barlow lens, 78–79, 110 of open clusters, Aricebo radio telescope, Barnard’s Galaxy, 49 15–16 33 Basel (Bas) catalogue, 196 of star complexes, 41 Aries, 45 Bayer classification of stellar associations, Arp 2, 51 system, 93 39, 41–42 Arp catalogue, 197 Be16, 63 of the universe, 28 Arp-Madore (AM)-1, 33 Beehive Cluster, 13, 60, Aldebaran, 43 Arp-Madore (AM)-2, 148 Alessi, 22, 61 48, 65 Bergeron 1, 22 Alessi catalogue, 196 Arp-Madore (AM) Bergeron, J., 22 Algenubi, 44 catalogue, 197 Berkeley 11, 124f, 125 Algieba, 44 Asterisms, 43–45, Berkeley 17, 15 Algol (Demon Star), 65, 94 Berkeley 19, 130 21 Astronomy (magazine), Berkeley 29, 18 Alnilam, 5–6 89 Berkeley 42, 171–173 Alnitak, 5–6 Astronomy Now Berkeley (Be) catalogue, Alpha Centauri, 25 (magazine), 89 196 Alpha Orionis, 93 Astrophotography, 94, Beta Pictoris, 42 Alpha Persei, 40 101, 102–103 Beta Piscium, 44 Altair, 44 Astroplanner (software), Betelgeuse, 93 Alterf, 44 90 Big Bang, 5, 29 Altitude-Azimuth Astro-Snap (software), Big Dipper, 19, 43 (Alt-Az) mount, 107 Binary millisecond 75–76 AstroStack (software), pulsars, 30 Andromeda Galaxy, 36, 108 Binary stars, 8, 52 39, 41, 48, 52, 61 AstroVideo (software), in globular clusters, ANR 1947 -
Non-Radial Pulsations in the O Stars Ξ Persei and Λ Cephei
UvA-DARE (Digital Academic Repository) Non-radial pulsations in the O stars xi-Persei and lambda-Cephei de Jong, J.A.; Henrichs, H.F.; Schrijvers, C.; Gies, D.R.; Telting, J.H.; Kaper, L.; Zwarthoed, G.A.A. Publication date 1999 Published in Astronomy & Astrophysics Link to publication Citation for published version (APA): de Jong, J. A., Henrichs, H. F., Schrijvers, C., Gies, D. R., Telting, J. H., Kaper, L., & Zwarthoed, G. A. A. (1999). Non-radial pulsations in the O stars xi-Persei and lambda- Cephei. Astronomy & Astrophysics, 345, 172-180. General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. UvA-DARE is a service provided by the library of the University of Amsterdam (https://dare.uva.nl) Download date:29 Sep 2021 Astron. Astrophys. 345, 172–180 (1999) ASTRONOMY AND ASTROPHYSICS Non-radial pulsations in the O stars ξ Persei and λ Cephei J.A.