December 2019 OBSERVER

Total Page:16

File Type:pdf, Size:1020Kb

December 2019 OBSERVER THE OBSERVER OF THE TWIN CITY AMATEUR ASTRONOMERS Volume 44, Number 12 December 2019 INSIDE THIS ISSUE: 1«Editor’s Choice: Image of the Month – NGC 7331 2«President’s Note 3«Calendar of Celestial Events – December 2019 3«New & Renewing Members/DUes BlUes/E-Mail List 4«This Month’s Phases of the Moon 4«This Month’s Solar Phenomena 4«TCAA Calendar of Events for 2019-2020 5«MinUtes of the November 5th BoD Meeting 6«AstroBits – News from AroUnd the TCAA 8«TCAA Loses Another Benefactor – Ernie Finnigan 9«Make Plans Now to Attend TCAA AnnUal Meeting 9«December 2019 with Jeffrey Hunt 15«TCAA Active on Facebook 15«Renewing YoUr TCAA Membership 16«E/PO Updates for November 2019 16«Did YoU Know? 17«Public Viewing Sessions for 2020 18«TCAA Image Gallery IMAGE OF THE MONTH: EDITOR’S CHOICE – NGC 7331 « 19 TCAA Treasurer’s Report as of November 26, 2019 This month’s image of NGC 7331 and the sUrroUnding area was taken by Bob Finnigan and Scott Wade on the evenings of November 22 and 23 Using the 14” telescope and new fUll-frame The TCAA is an affiliate of the QHY 367 color camera at PSO. The image shown here consists of Astronomical LeagUe as well as its thirteen 600-second and nine 900-second subs. The image was North Central Region. For more processed by Scott using Pixinsight and Photoshop. information about the TCAA, be NGC 7331 is a spiral galaxy aboUt 40 million light-years away in certain to visit the TCAA website at the constellation of PegasUs. It was discovered by William Herschel tcaa.Us/ in 1784. NGC 7331 is the brightest member of the NGC 7331 GroUp of galaxies which is seen in the backgroUnd. This region of Visit AstroleagUe.org for additional space is jUst loaded with galaxies. Barely oUt the field of view to information aboUt the LeagUe and its the lower right is Stephan’s QUintet. numerous membership benefits Stephan's QUintet is a visual including observing programs. grouping of five galaxies of which four form the first compact galaxy groUp ever discovered. The groUp was Also visit the NCRAL website at discovered by Édouard Stephan in ncral.wordpress.com for information 1877 at the Marseille Observatory. about our North Central Region. Find The group is the most studied of all out about our next Regional the compact galaxy groUps. Perhaps convention during May 2020. next time we’ll see an image of these. Copyright © 2019 TCAA 1 All rights reserved. Vol. 44, No. 12 The OBSERVER of the Twin City Amateur Astronomers December 2019 PRESIDENT’S NOTE The OBSERVER It was with great sadness we received is the monthly electronic newsletter of Twin the news of the passing of Ernie Finnigan, City Amateur Astronomers, Inc., a registered 501(c)(3) non-profit educational brother of longtime member Bob Finnigan. organization of amateur astronomers inter- Ernie was a great friend to the clUb. He ested in stUdying astronomy and sharing provided the land which we leased from him their hobby with the pUblic. for the pUrpose of constrUcting the Waynesville Observatory. TCAA OFFICERS & CHAIRPERSONS Apart from Bob, I had the most PresIdent, DIrector, & Property Manager opportunity to interact with Ernie. I would Tim Stone 309-531-2401 hear his John Deere Gator coming down the [email protected] driveway, and knew I was going to have a Vice President & DIrector/MembershIp Coord. visit. Sometimes he would inform us of President Tim Stone Tom Willmitch 309-846-2423 business that needed to be attended to, but [email protected] most of the time he was jUst down there to Treasurer & DIrector/Registered Agent talk for a while and see how things were going. Dave Osenga 309-287-0789 He helped the clUb in many ways, from providing temporary storage for [email protected] arriving equipment to mowing the grass on the observatory groUnds. Most Secretary & DIrector/HIstorian/EdItor recently, he helped plant a set of trees on the north and east side of our property Carl J. Wenning 309-830-4085 to provide some privacy and windbreak. He thoUghtfUlly chose a species of tree [email protected] that doesn’t get too tall and made sure everything woUld work for the observatory. 5th Director/AssIstant Property Manager Before that he planted grass on the grounds, which had been little more than a Scott Wade 309-310-2464 mud flat, and bermed oUr bUildings with rock to eliminate rUnoff seeping in and [email protected] puddling on our floors. AstronomIcal League Correspondent We will miss Ernie. Our thoUghts and prayers are for his friends and family in Robert Finnigan 309-846-9533 this difficUlt time of transition. [email protected] On a happier note, Diann and I will host the TCAA Holiday Party again this year Technology Coordinator at our home on December 19th starting at 6:30 PM. Food will be potluck, so please Justin Meyer 630-649-0611 [email protected] bring a dish to share. If you’d let me know what you plan to bring, that would be great, so we can be sUre we don’t too mUch of the same thing. Our address is: Webmaster Lee Green 309-454-7349 [email protected] 920 S Summit St. Bloomington, IL 61701 LightIng Educ. & AL ObservIng Club CoordInator Lisa Wentzel unlisted number [email protected] We have a great time at this event. I do hope you can attend! The OBSERVER Tim Stone, President Carl J. Wenning, Editor Submission deadline two days before the end of each month. MEMBERSHIP DUES IndividUal AdUlt/Family $40 Full-time Student/Senior $25 (Senior statUs eqUals ages 60+) To join, send your name, contact info and dues payment to Dave Osenga, TCAA Treasurer, 1109 N. Linden St., Normal, IL 61761-1471. Copyright © 2019 TCAA 2 All rights reserved. Vol. 44, No. 12 The OBSERVER of the Twin City Amateur Astronomers December 2019 CALENDAR OF CELESTIAL EVENTS – DECEMBER 2019 NEW & RENEWING MEMBERS MORNING PLANETS (12/15): MercUry ( ☿ ) and Mars (♂) The following individuals have paid dues for new or renewed memberships as of November 26, 2019. (Others EVENING PLANETS (12/15): Venus (♀), Jupiter ( ♃ ), who paid after that date will appear in the JanUary 2020 SatUrn (♄), UranUs ( ♅ ), and NeptUne ( ♆ ) issUe of The OBSERVER.) The following table gives the date and time (24-hour clock) of Welcome! Welcome! Welcome! Welcome! Welcome! important astronomical events for this month. All events are given in Central Daylight Time. New: Renewing: Lisa Wentzel, Anthony Cellini, and Day Time Event John Gahm (to Dec. 2021) 04 00:58 FIRST QUARTER MOON Welcome! Welcome! Welcome! Welcome! Welcome! 04 22:09 Moon at Apogee: 404447 km UES LUES 11 05:40 Aldebaran 3.0°S of Moon D B 11 23:12 FULL MOON If yoU have received a “your dues are due” statement along with the email that broUght yoU this 13 08:15 Moon at Ascending Node issUe of The OBSERVER, please remit yoUr dUes to Mr. 14 11:51 Pollux 5.3°N of Moon Dave Osenga, TCAA TreasUrer, 1109 N. Linden St., 14 12 Geminid Meteor Shower Normal, IL 61761-1471. DUes are cUrrently $25 for seniors (60 years of age and over) and $40 regUlar. 15 09:54 Beehive 1.0°S of Moon 16 22:41 Regulus 3.8°S of Moon SUBSCRIBING TO THE NEW TCAA EMAIL LIST 18 14:30 Moon at Perigee: 370260 km The old TCAA Yahoo.groups email list is going away – 18 22:57 LAST QUARTER MOON at least as far as the TCAA leadership is concerned. Used 21 22:19 Winter Solstice by the TCAA for many years, Yahoo is no longer supporting the distribUtion system for anything other 22 19:49 Mars 3.5°S of Moon than email without attachments. They are also making it 22 21 Ursid Meteor Shower much harder to Use. For instance, individUals mUst now be invited and then approved by a moderator to enroll in 25 23:13 NEW MOON this service. Gone will be the days when anyone coUld 25 23:18 Annular Solar Eclipse; mag=0.97 subscribe whenever they wished. 26 07:01 Moon at Descending Node You may still Use the existing TCAA Yahoo.groups email system to address most of the clUb members (not 27 12 Jupiter in Conjunction with Sun all subscribe), but forget about including anything other 28 19:32 Venus 1.0°N of Moon: Occn. than text. Efforts are now underway to replace Yahoo.groups with groUps.io. Devanand Chatrathi will be 29 23 Mercury at Aphelion setting Up the groUp for us. There will be no attempt at “migrating” Yahoo.groups subscribers to groups.io; http://www.astropixels.com/ephemeris/astrocal/astrocal2020cst.html members will be provided instrUctions shortly in how to EVENING SKY MAP subscribe to this new service. Click on the icon found here to access a cUrrent evening sky map along with a more detailed celestial events calendar. Copyright © 2019 TCAA 3 All rights reserved. Vol. 44, No. 11 The OBSERVER of the Twin City Amateur Astronomers NoVember 2019 THIS MONTH’S PHASES OF THE MOON First Quarter Full Moon Last Quarter New Moon Wednesday, December 4 Wednesday, December 11 Wednesday, December 18 Wednesday, December 25 All moon phase dates are Central Standard Time. Moon phases for the 2020 calendar year can be found by clicking here. Images provided by J. K. Howell of the Champaign-Urbana Astronomical Society & Used with permission. THIS MONTH’S SOLAR PHENOMENA In the table below, yoU will find times of sUnrise and sUnset along with rising and setting azimUths (Az), length of day including change from previous day, start and end times of astronomical twilight, and the time of solar noon along with the elevation (El) of the midday sun.
Recommended publications
  • C a L E N D a R F O R 2019
    Small Astronomy Calendar for Amateur Astronomers Year III 2021 Let’s welcome our 2021 Small Astronomy Calendar Edition made by our Intergalactic Astronomy Educators Fellowship (IGAEF)’s team. In 2021, many amateur astronomers asked for calculations for more specific geographical locations. This year we added new useful calculated positions and coordinates for everyone in the world to use. You should check this calendar every month, specifically the lunar occultations pages for your observation point. There are many interesting and unique events that might not happen every year, because of the different parameters of the Moon orbit. Our hope is to fulfill your expectations. We would like to receive suggestions and feedback. You can find the editor’s email in the last page of the calendar. We appreciate your support and we are looking forward to having a good observational year, and a better and more complete calendar for this first year of a new decade. Index 3 - Calendar for 2021 4 – What is the Intergalactic Astronomy Educators Fellowship (IGAEF) 5 - Time Zones and Universal Time 6 - Phases of the Moon 2021 7 – Physical Ephemeris for the Moon 2021 10 - Local Time (EST) of MOONRISE 2021 11 - Local Time (EST) of MOONSET 2021 12 - Local time (EST) of planets rise and set 2021 15 - Diary of Astronomical Phenomena 2021 21 - Lunar eclipses 23 - Solar Eclipses 25 - Meteor Showers for 2021 26 – 2021 UPCOMING COMETS 27 - Satellites of Jupiter 2021 36 – Mutual Events of Jupiter Satellites 2021 39 - Julian Day Number, Apparent Sidereal Time, Obliquity
    [Show full text]
  • Naming the Extrasolar Planets
    Naming the extrasolar planets W. Lyra Max Planck Institute for Astronomy, K¨onigstuhl 17, 69177, Heidelberg, Germany [email protected] Abstract and OGLE-TR-182 b, which does not help educators convey the message that these planets are quite similar to Jupiter. Extrasolar planets are not named and are referred to only In stark contrast, the sentence“planet Apollo is a gas giant by their assigned scientific designation. The reason given like Jupiter” is heavily - yet invisibly - coated with Coper- by the IAU to not name the planets is that it is consid- nicanism. ered impractical as planets are expected to be common. I One reason given by the IAU for not considering naming advance some reasons as to why this logic is flawed, and sug- the extrasolar planets is that it is a task deemed impractical. gest names for the 403 extrasolar planet candidates known One source is quoted as having said “if planets are found to as of Oct 2009. The names follow a scheme of association occur very frequently in the Universe, a system of individual with the constellation that the host star pertains to, and names for planets might well rapidly be found equally im- therefore are mostly drawn from Roman-Greek mythology. practicable as it is for stars, as planet discoveries progress.” Other mythologies may also be used given that a suitable 1. This leads to a second argument. It is indeed impractical association is established. to name all stars. But some stars are named nonetheless. In fact, all other classes of astronomical bodies are named.
    [Show full text]
  • UC Irvine UC Irvine Previously Published Works
    UC Irvine UC Irvine Previously Published Works Title Astrophysics in 2006 Permalink https://escholarship.org/uc/item/5760h9v8 Journal Space Science Reviews, 132(1) ISSN 0038-6308 Authors Trimble, V Aschwanden, MJ Hansen, CJ Publication Date 2007-09-01 DOI 10.1007/s11214-007-9224-0 License https://creativecommons.org/licenses/by/4.0/ 4.0 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Space Sci Rev (2007) 132: 1–182 DOI 10.1007/s11214-007-9224-0 Astrophysics in 2006 Virginia Trimble · Markus J. Aschwanden · Carl J. Hansen Received: 11 May 2007 / Accepted: 24 May 2007 / Published online: 23 October 2007 © Springer Science+Business Media B.V. 2007 Abstract The fastest pulsar and the slowest nova; the oldest galaxies and the youngest stars; the weirdest life forms and the commonest dwarfs; the highest energy particles and the lowest energy photons. These were some of the extremes of Astrophysics 2006. We attempt also to bring you updates on things of which there is currently only one (habitable planets, the Sun, and the Universe) and others of which there are always many, like meteors and molecules, black holes and binaries. Keywords Cosmology: general · Galaxies: general · ISM: general · Stars: general · Sun: general · Planets and satellites: general · Astrobiology · Star clusters · Binary stars · Clusters of galaxies · Gamma-ray bursts · Milky Way · Earth · Active galaxies · Supernovae 1 Introduction Astrophysics in 2006 modifies a long tradition by moving to a new journal, which you hold in your (real or virtual) hands. The fifteen previous articles in the series are referenced oc- casionally as Ap91 to Ap05 below and appeared in volumes 104–118 of Publications of V.
    [Show full text]
  • 121012-AAS-221 Program-14-ALL, Page 253 @ Preflight
    221ST MEETING OF THE AMERICAN ASTRONOMICAL SOCIETY 6-10 January 2013 LONG BEACH, CALIFORNIA Scientific sessions will be held at the: Long Beach Convention Center 300 E. Ocean Blvd. COUNCIL.......................... 2 Long Beach, CA 90802 AAS Paper Sorters EXHIBITORS..................... 4 Aubra Anthony ATTENDEE Alan Boss SERVICES.......................... 9 Blaise Canzian Joanna Corby SCHEDULE.....................12 Rupert Croft Shantanu Desai SATURDAY.....................28 Rick Fienberg Bernhard Fleck SUNDAY..........................30 Erika Grundstrom Nimish P. Hathi MONDAY........................37 Ann Hornschemeier Suzanne H. Jacoby TUESDAY........................98 Bethany Johns Sebastien Lepine WEDNESDAY.............. 158 Katharina Lodders Kevin Marvel THURSDAY.................. 213 Karen Masters Bryan Miller AUTHOR INDEX ........ 245 Nancy Morrison Judit Ries Michael Rutkowski Allyn Smith Joe Tenn Session Numbering Key 100’s Monday 200’s Tuesday 300’s Wednesday 400’s Thursday Sessions are numbered in the Program Book by day and time. Changes after 27 November 2012 are included only in the online program materials. 1 AAS Officers & Councilors Officers Councilors President (2012-2014) (2009-2012) David J. Helfand Quest Univ. Canada Edward F. Guinan Villanova Univ. [email protected] [email protected] PAST President (2012-2013) Patricia Knezek NOAO/WIYN Observatory Debra Elmegreen Vassar College [email protected] [email protected] Robert Mathieu Univ. of Wisconsin Vice President (2009-2015) [email protected] Paula Szkody University of Washington [email protected] (2011-2014) Bruce Balick Univ. of Washington Vice-President (2010-2013) [email protected] Nicholas B. Suntzeff Texas A&M Univ. suntzeff@aas.org Eileen D. Friel Boston Univ. [email protected] Vice President (2011-2014) Edward B. Churchwell Univ. of Wisconsin Angela Speck Univ. of Missouri [email protected] [email protected] Treasurer (2011-2014) (2012-2015) Hervey (Peter) Stockman STScI Nancy S.
    [Show full text]
  • Three Naked Eye Galaxies? Dave Eagle
    Three Naked Eye Galaxies? Dave Eagle. Eagleseye Observatory. Star hopping to M31, The Great Andromeda Galaxy. In the autumn sky in the northern hemisphere, the constellations of Perseus and Andromeda are very proudly on display, located on the meridian around midnight, and visible from most of the world. The Great Square of Pegasus is a distinct asterism of four stars. Using just your naked eye, find this square of stars. Incidentally, the top left star (all instructions are now as seen from the northern hemisphere) Sirrah, is now actually Alpha Andromedae. From this square of stars take the top edge of the square and carry the line on towards the left (east) and up. Just under half the distance of the top of the square, you should come to another reasonably bright star. Slightly left and up again, taking a slightly longer journey, you will come to another star of similar brightness. This is Mirach or Beta Andromedae. When you have found this star, turn 90 degrees to the right. You will then see two fairly bright stars leading away. Aim for the second star and gaze at this star. If your skies are reasonably dark, just above and to the right of the second star you should be able to see a faint smudge. This marks the location of M31, The Andromeda Galaxy. In five hops we have found our quarry. Figure 1 – Star hopping from Sirrah to The Andromeda Galaxy. This is the most distant object you can see with the naked eye and is almost 2.5 million light years away.
    [Show full text]
  • Divinus Lux Observatory Bulletin: Report #18
    Vol. 5 No. 3 Summer 2009 Journal of Double Star Observations Page 129 Divinus Lux Observatory Bulletin: Report #18 Dave Arnold Program Manager for Double Star Research 2728 North Fox Run Drive Flagstaff, AZ 86004 Email: [email protected] Abstract: This report contains theta/rho measurements from 92 different double star sys- tems. The time period spans from 2008.989 to 2009.200. Measurements were obtained using a 20-cm Schmidt-Cassegrain telescope and an illuminated reticle micrometer. This report represents a portion of the work that is currently being conducted in double star astronomy at Divinus Lux Observatory in Flagstaff, Arizona. The double star measurements contained in this be a 2 degrees increase in the theta value from that report form part of a series of articles that have been which was reported in 1999. Even though a theta continuously released at Divinus Lux Observatory value of 20.2 degrees was measured, there is some since the spring of 2001. The primary emphasis of the uncertainty about this result because the WDS and astronomical research at the observatory has been Hipparcos/Tycho catalogs suggest an extrapolated focused upon double star work since that time. The value of 18.4 degrees for the date of 2009.044. Addi- purpose of these efforts is to help provide current in- tional measurements of this double star would help to formation for the maintenance of the Washington determine which theta value is more accurate. Double Star Catalog (WDS). Because valuable re- Proper motions by the component stars, in HJ 807 search can be conducted with modest and inexpensive AB, have caused a rho value increase of approxi- equipment, others who are seeking to initiate a re- mately 5.5% since 1999.
    [Show full text]
  • Astrophysics in 2006 3
    ASTROPHYSICS IN 2006 Virginia Trimble1, Markus J. Aschwanden2, and Carl J. Hansen3 1 Department of Physics and Astronomy, University of California, Irvine, CA 92697-4575, Las Cumbres Observatory, Santa Barbara, CA: ([email protected]) 2 Lockheed Martin Advanced Technology Center, Solar and Astrophysics Laboratory, Organization ADBS, Building 252, 3251 Hanover Street, Palo Alto, CA 94304: ([email protected]) 3 JILA, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder CO 80309: ([email protected]) Received ... : accepted ... Abstract. The fastest pulsar and the slowest nova; the oldest galaxies and the youngest stars; the weirdest life forms and the commonest dwarfs; the highest energy particles and the lowest energy photons. These were some of the extremes of Astrophysics 2006. We attempt also to bring you updates on things of which there is currently only one (habitable planets, the Sun, and the universe) and others of which there are always many, like meteors and molecules, black holes and binaries. Keywords: cosmology: general, galaxies: general, ISM: general, stars: general, Sun: gen- eral, planets and satellites: general, astrobiology CONTENTS 1. Introduction 6 1.1 Up 6 1.2 Down 9 1.3 Around 10 2. Solar Physics 12 2.1 The solar interior 12 2.1.1 From neutrinos to neutralinos 12 2.1.2 Global helioseismology 12 2.1.3 Local helioseismology 12 2.1.4 Tachocline structure 13 arXiv:0705.1730v1 [astro-ph] 11 May 2007 2.1.5 Dynamo models 14 2.2 Photosphere 15 2.2.1 Solar radius and rotation 15 2.2.2 Distribution of magnetic fields 15 2.2.3 Magnetic flux emergence rate 15 2.2.4 Photospheric motion of magnetic fields 16 2.2.5 Faculae production 16 2.2.6 The photospheric boundary of magnetic fields 17 2.2.7 Flare prediction from photospheric fields 17 c 2008 Springer Science + Business Media.
    [Show full text]
  • FY13 High-Level Deliverables
    National Optical Astronomy Observatory Fiscal Year Annual Report for FY 2013 (1 October 2012 – 30 September 2013) Submitted to the National Science Foundation Pursuant to Cooperative Support Agreement No. AST-0950945 13 December 2013 Revised 18 September 2014 Contents NOAO MISSION PROFILE .................................................................................................... 1 1 EXECUTIVE SUMMARY ................................................................................................ 2 2 NOAO ACCOMPLISHMENTS ....................................................................................... 4 2.1 Achievements ..................................................................................................... 4 2.2 Status of Vision and Goals ................................................................................. 5 2.2.1 Status of FY13 High-Level Deliverables ............................................ 5 2.2.2 FY13 Planned vs. Actual Spending and Revenues .............................. 8 2.3 Challenges and Their Impacts ............................................................................ 9 3 SCIENTIFIC ACTIVITIES AND FINDINGS .............................................................. 11 3.1 Cerro Tololo Inter-American Observatory ....................................................... 11 3.2 Kitt Peak National Observatory ....................................................................... 14 3.3 Gemini Observatory ........................................................................................
    [Show full text]
  • Cycle 12 Abstract Catalog
    Cycle 12 Abstract Catalog Generated April 04, 2003 ================================================================================ Proposal Category: GO Scientific Category: ISM AND CIRCUMSTELLAR MATTER ID: 9718 Title: SMC Extinction Curve Towards a Quiescent Molecular Cloud PI: Francois Boulanger PI Institution: Institut d'Astrophysique Spatiale The lack of 2175 A bump in the SMC extinction curve is interpreted as an absence of small carbon grains. ISO Mid-IR observations support this interpretation by showing that PAH features are absent in the spectra of SMC and LMC massive star forming regions. However, the only ISO observation of an SMC quiescent molecular cloud shows all PAH features, indicating a PAH abundance relative to large dust grains similar to that of Milky Way clouds. We identified a reddened B2III star associated with this cloud. We propose to observe it with STIS. This observation will provide the first measure of the extinction properties of SMC dust away from star forming regions. It will allow us to disentangle the effects of metallicity and massive stars on the SMC extinction curve and dust composition and to assess the relevance of the SMC bump-free extinction curve to low metallicity and/or starburst galaxies in general. ================================================================================ Proposal Category: GO Scientific Category: STELLAR POPULATIONS ID: 9719 Title: Search For Metallicity Spreads in M31 Globular Clusters PI: Terry Bridges PI Institution: Anglo-Australian Observatory Our recent deep HST photometry of the M31 halo globular cluster (GC) Mayall~II, also called G1, has revealed a red-giant branch with a clear spread that we attribute to an intrinsic metallicity dispersion of at least 0.4 dex in [Fe/H].
    [Show full text]
  • Observer Page 2 of 12
    AAAssstttrrrooonnnooomyyy CCCllluuubbb ooofff TTTuuulllsssaaa OOOOOObbbbbbsssssseeeeeerrrrrrvvvvvveeeeeerrrrrr January 2009 Picture of the Month Mirach’s Ghost – NGC 404 / Herschel II-224 As far as ghosts go, Mirach's Ghost isn't really that scary. In fact, Mirach's Ghost is just a faint, fuzzy galaxy, well known to astronomers, that happens to be seen nearly along the line-of-sight to Mirach, a bright star. Centered in this star field, Mirach is also called Beta Andromedae. About 200 light-years distant, Mirach is a red giant star, cooler than the Sun but much larger and so intrinsically much brighter than our parent star. In most telescopic views, glare and diffraction spikes tend to hide things that lie near Mirach and make the faint, fuzzy galaxy look like a ghostly internal reflection of the almost overwhelming starlight. Still, appearing in this sharp image just above and to the right, Mirach's Ghost is cataloged as galaxy NGC 404 and is estimated to be some 10 million light-years away. – Explanation from APOD/NASA Credit & Copyright – Anthony Ayiomamitis (Athens, Greece) Website = http://www.perseus.gr/ & eMail = [email protected] Inside This Issue: Important ACT Upcoming Dates: Vice President's Message - p2 IYoA - - - - - - - - - - - - - - - p6 Public Star Party… Fri. January 2, 2009 (p11) Word Search Puzzle - - - - p3 Virtual Moon Atlas - - - - - - p7 ACT Meeting @ TCC - Fri. January 9, ( 7pm ) January Stars - - - - - - - - p4 Observing Pages - - - - pp 8- 9 Members Only Star Party … Fri. January 23, 2009 Planetarium News - - - - - p5 Land’s Tidbits - - - - - - - - p10 ACT Observer Page 2 of 12 Vice President’s Message by Tom Mcdonough Happy New Year to everyone, we have a very exciting year ahead of us! 2009 is the International Year of Astronomy in celebration of the 400th anniversary of Galileo’s observations of the heavens with one of the first telescopes.
    [Show full text]
  • Orders of Magnitude (Length) - Wikipedia
    03/08/2018 Orders of magnitude (length) - Wikipedia Orders of magnitude (length) The following are examples of orders of magnitude for different lengths. Contents Overview Detailed list Subatomic Atomic to cellular Cellular to human scale Human to astronomical scale Astronomical less than 10 yoctometres 10 yoctometres 100 yoctometres 1 zeptometre 10 zeptometres 100 zeptometres 1 attometre 10 attometres 100 attometres 1 femtometre 10 femtometres 100 femtometres 1 picometre 10 picometres 100 picometres 1 nanometre 10 nanometres 100 nanometres 1 micrometre 10 micrometres 100 micrometres 1 millimetre 1 centimetre 1 decimetre Conversions Wavelengths Human-defined scales and structures Nature Astronomical 1 metre Conversions https://en.wikipedia.org/wiki/Orders_of_magnitude_(length) 1/44 03/08/2018 Orders of magnitude (length) - Wikipedia Human-defined scales and structures Sports Nature Astronomical 1 decametre Conversions Human-defined scales and structures Sports Nature Astronomical 1 hectometre Conversions Human-defined scales and structures Sports Nature Astronomical 1 kilometre Conversions Human-defined scales and structures Geographical Astronomical 10 kilometres Conversions Sports Human-defined scales and structures Geographical Astronomical 100 kilometres Conversions Human-defined scales and structures Geographical Astronomical 1 megametre Conversions Human-defined scales and structures Sports Geographical Astronomical 10 megametres Conversions Human-defined scales and structures Geographical Astronomical 100 megametres 1 gigametre
    [Show full text]
  • Astronomy 2009 Index
    Astronomy Magazine 2009 Index Subject Index 1RXS J160929.1-210524 (star), 1:24 4C 60.07 (galaxy pair), 2:24 6dFGS (Six Degree Field Galaxy Survey), 8:18 21-centimeter (neutral hydrogen) tomography, 12:10 93 Minerva (asteroid), 12:18 2008 TC3 (asteroid), 1:24 2009 FH (asteroid), 7:19 A Abell 21 (Medusa Nebula), 3:70 Abell 1656 (Coma galaxy cluster), 3:8–9, 6:16 Allen Telescope Array (ATA) radio telescope, 12:10 ALMA (Atacama Large Millimeter/sub-millimeter Array), 4:21, 9:19 Alpha (α) Canis Majoris (Sirius) (star), 2:68, 10:77 Alpha (α) Orionis (star). See Betelgeuse (Alpha [α] Orionis) (star) Alpha Centauri (star), 2:78 amateur astronomy, 10:18, 11:48–53, 12:19, 56 Andromeda Galaxy (M31) merging with Milky Way, 3:51 midpoint between Milky Way Galaxy and, 1:62–63 ultraviolet images of, 12:22 Antarctic Neumayer Station III, 6:19 Anthe (moon of Saturn), 1:21 Aperture Spherical Telescope (FAST), 4:24 APEX (Atacama Pathfinder Experiment) radio telescope, 3:19 Apollo missions, 8:19 AR11005 (sunspot group), 11:79 Arches Cluster, 10:22 Ares launch system, 1:37, 3:19, 9:19 Ariane 5 rocket, 4:21 Arianespace SA, 4:21 Armstrong, Neil A., 2:20 Arp 147 (galaxy pair), 2:20 Arp 194 (galaxy group), 8:21 art, cosmology-inspired, 5:10 ASPERA (Astroparticle European Research Area), 1:26 asteroids. See also names of specific asteroids binary, 1:32–33 close approach to Earth, 6:22, 7:19 collision with Jupiter, 11:20 collisions with Earth, 1:24 composition of, 10:55 discovery of, 5:21 effect of environment on surface of, 8:22 measuring distant, 6:23 moons orbiting,
    [Show full text]