DOCSLIB.ORG

The Observer of the Twin City Amateur Astronomers

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Observer of the Twin City Amateur Astronomers THE OBSERVER OF THE TWIN CITY AMATEUR ASTRONOMERS Volume 43, Number 8 August 2018 INSIDE THIS ISSUE: 1«Editor’s Choice: August Image – 2«President’s Note 3«Calendar of Celestial Events – August 2018 3«New & Renewing Members/Dues Blues/E-Mail List 4«This Month’s Phases of the Moon 4«This Month’s Solar Phenomena 4«August 2018: Evening Planet Parade Begins to Split 8«Minutes of the July 24th TCAA Board Meeting 9«Quarterly Membership Meetings Coming! 10«AstroBits – News from Around the TCAA 12«TCAA Photo Gallery 13«Profiles in Amateur Astronomy: Daniel Kates 13«Education & Public Outreach for July 2018 14«Remaining Public Viewing Sessions for 2018 14«TCAA Calendar of Events for 2018-2019 15«HowTimeFlies 15«TCAA on Facebook and Twitter EDITOR’S CHOICE: IMAGE OF THE MONTH – MARS 15«Renewing Your TCAA Membership This month’s editor’s Choice shows an image of Mars nearing 16«TCAA Treasurer’s Report as of July 30, 2018 opposition. The July 18th image was taken by Popular Astronomy 16«CUAS to Host Astronomy Summit Club President Alan Sheidler (Quad Cities) using the 10” Meade 17«Calling All Illinois Astronomy Clubs: Amateur telescope he acquired from the TCAA several years ago during our Astronomy Summit September Mini Conference. Alan writes, “At 12:30 or so, I used my Nikon D90 and 10" LX200 to shoot a 60-second video of Mars, which I then stacked using Autostakkert to provide the image shown. Some surface details are visible, but still somewhat obscured by a global dust storm.” When asked to further describe his system, Alan wrote, “The camera is a Nikon D90 digital SLR. This is the same camera I use for all my photography. It has the capability to shoot video which works great for bright objects like planets. I use eye-piece pro- jection with a 10mm eyepiece to get the image to be large enough to see any The TCAA is an affiliate of the Astronomical League. For detail. So, the image more information about the TCAA, be certain to visit our shown is magnified club website. maybe 250x.” Copyright © 2018 TCAA 1 All rights reserved. Vol. 43, No. 8 The OBSERVER of the Twin City Amateur Astronomers August 2018 PRESIDENT’S NOTE The OBSERVER Our nights are getting longer is the monthly electronic newsletter of Twin again (thank goodness), and the City Amateur Astronomers, Inc., a registered 501(c)(3) non-profit educational summer heat seems to have organization of amateur astronomers passed, so it’s time for TCAA interested in studying astronomy and members to get back into the sharing their hobby with the public. swing of things, astronomically speaking. There’s no better time TCAA OFFICERS & CHAIRPERSONS than late summer and early autumn to be out under the stars President, Director, & Property Manager Tim Stone 309-531-2401 doing what we love. Perhaps [email protected] you’ve thought to yourself, “I really should get that scope out Vice President & Director/Membership Coord. and do some observing.” Well, Tom Willmitch 309-846-2423 [email protected] there’s no time like the present. Here are some ideas for re- TCAA President Tim Stone Treasurer & Director/Registered Agent activating your astronomical passion: Dave Osenga 309-287-0789 [email protected] 1. Set a goal. Your goal doesn’t have to be anything grand, like “Observe the entire NGC.” You could decide to observe globular clusters, double stars, or any Secretary & Director/Historian/Editor Carl J. Wenning 309-830-4085 class of object that interests you. You could decide to finally finish (or start) the [email protected] Astronomical League Messier Observing Program. Perhaps you want to try taking a picture through a telescope. Whatever you decide, make it an Director/Technology Coordinator attainable goal, consult with your fellow TCAA members on how to achieve Justin Meyer 630-649-0611 [email protected] that goal, and commit to a certain date. There’s a LOT of motivation in goals! Astronomical League Correspondent 2. You don’t have a telescope? No problem! Avail yourself of the great facilities at Robert Finnigan 309-846-9533 Sugar Grove Nature Center and Waynesville Observatory. SGNC has our SGO [email protected] and PSO observatories, outfitted with excellent telescopes for visual use. If you aren’t yet checked out on that equipment, we can help you with that, and then Webmaster Lee Green 309-454-7349 you can get your own key to one or both of those observatories. Of course, [email protected] Waynesville has a very open horizon and is considerably darker than SGNC. So, if you have your own telescope, bring it out. Lighting Educ. & AL Observing Club Coordinator Lisa Wentzel unlisted number 3. Come to our Public Viewing Sessions. Bring your telescope, set it up, and enjoy [email protected] sharing the sights of the night sky with the public. People from all walks of life Publicist and sometimes from some distance come to these events, and they’re always Rick Lasher 309-530-2678 so grateful for the opportunity to see the sky through our telescopes and to [email protected] learn from us about the things they’re seeing. It’s very energizing, and a surefire way to kick your astronomical activities into the next gear. The OBSERVER Carl J. Wenning, Editor in Chief 4. With Venus, Jupiter, Saturn, and Mars visible in our evening sky, people have Submission deadline two days before an opportunity to see these planets on one night and compare what they see. the end of each month. Perhaps you can take your telescope outside your house and point it at one of the planets and see who stops by. You might be surprised at how much fun it MEMBERSHIP DUES can be to watch someone who has never looked at anything through a telescope, and to hear their exclamations of awe and delight. Individual Adult/Family $40 Full-time Student/Senior $25 We have the tools, passion, and ability to introduce people to astronomy in a (Senior status equals ages 60+) uniquely tangible way. Let’s invest in our own knowledge and understanding, and To join, send your name, contact info and then use that to reach out to people, and to get involved in our own TCAA dues payment to Dave Osenga, TCAA community! I hope to see you soon! Treasurer, 1109 N. Linden St., Normal, IL Hope to see you soon. 61761-1471. Tim Stone, President Copyright © 2018 TCAA 2 All rights reserved. Vol. 43, No. 8 The OBSERVER of the Twin City Amateur Astronomers August 2018 ALENDAR OF ELESTIAL VENTS UGUST EW ENEWING EMBERS C C E – A 2018 N & R M The following individuals have paid dues for new or MORNING PLANETS (8/15): Mercury, Uranus & Neptune renewed memberships as of July 30, 2018. (Others who EVENING PLANETS (8/15): Venus, Mars, Jupiter & Saturn paid after that date will appear in the September 2018 issue of The OBSERVER.) The following table gives the date and time (24-hour clock) of important astronomical events for this month. All times are Central Daylight Time. Roy Lawry, Michael Starasta, Paul Pouliot, Matthew Will Day Time Event DUES BLUES 04 12:18 LAST QUARTER MOON 06 12:35 Aldebaran 1.1°S of Moon If you have received a “your dues are due” statement along with the email that brought you this 08 20 Mercury at Inferior Conjunction issue of The OBSERVER, please remit your dues to Mr. 10 07:40 Moon at Ascending Node Dave Osenga, TCAA Treasurer, 1109 N. Linden St., Normal, IL 61761-1471. Dues are currently $25 for 10 12:05 Moon at Perigee: 358083 km seniors (60 years of age and over) and $40 regular. 11 03:46 Partial Solar Eclipse; mag=0.737 11 03:58 NEW MOON SUBSCRIBING TO THE TCAA EMAIL LIST 12 19 Perseid Meteor Shower By subscribing to a group’s mailing list, you will 14 07:35 Venus 6.3°S of Moon receive email messages from the group though you won’t have access to the group’s web features (like 17 04:38 Jupiter 4.5°S of Moon photos, files, links, polls, calendar, etc.) unless members 17 10 Venus at Greatest Elong:45.9°E activate it later. The club has an open email listserv. It is known as the TCAA YahooGroups listserv. It will be used 18 01:49 FIRST QUARTER MOON to share announcements and reminders about 20 20:09 Mercury 4.8°S of Beehive astronomical and club events. To join this main listserv, you must do the following: 21 03:55 Saturn 2.1°S of Moon 23 05:23 Moon at Apogee: 405744 km 1. To subscribe: Send a blank email to TCAA- 23 22:51 Moon at Descending Node [email protected] Note: You’ll be sent a confirmation email from the group. Reply to the 26 05:56 FULL MOON confirmation email to activate your subscription. 26 14 Mercury at Greatest Elong:18.3°W 2. To post a message: [email protected] 3. To unsubscribe: [email protected] 31 22:45 Venus 1.0°S of Spica http://www.astropixels.com/ephemeris/astrocal/astrocal2018cst.html EVENING SKY MAP Click on the icon found here to access a current evening sky map along with a more detailed celestial events calendar. Copyright © 2018 TCAA 3 All rights reserved. Vol. 43, No. 8 The OBSERVER of the Twin City Amateur Astronomers August 2018 THIS MONTH’S PHASES OF THE MOON Last Quarter New Moon First Quarter Full Moon Saturday, August 4 Saturday, August 11 Saturday, August 18 Monday, August 27 All moon phase dates are Central Daylight Time.
Load more

Recommended publications
  • 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]
  • The Minor Planet Bulletin
    THE MINOR PLANET BULLETIN OF THE MINOR PLANETS SECTION OF THE BULLETIN ASSOCIATION OF LUNAR AND PLANETARY OBSERVERS VOLUME 36, NUMBER 3, A.D. 2009 JULY-SEPTEMBER 77. PHOTOMETRIC MEASUREMENTS OF 343 OSTARA Our data can be obtained from http://www.uwec.edu/physics/ AND OTHER ASTEROIDS AT HOBBS OBSERVATORY asteroid/. Lyle Ford, George Stecher, Kayla Lorenzen, and Cole Cook Acknowledgements Department of Physics and Astronomy University of Wisconsin-Eau Claire We thank the Theodore Dunham Fund for Astrophysics, the Eau Claire, WI 54702-4004 National Science Foundation (award number 0519006), the [email protected] University of Wisconsin-Eau Claire Office of Research and Sponsored Programs, and the University of Wisconsin-Eau Claire (Received: 2009 Feb 11) Blugold Fellow and McNair programs for financial support. References We observed 343 Ostara on 2008 October 4 and obtained R and V standard magnitudes. The period was Binzel, R.P. (1987). “A Photoelectric Survey of 130 Asteroids”, found to be significantly greater than the previously Icarus 72, 135-208. reported value of 6.42 hours. Measurements of 2660 Wasserman and (17010) 1999 CQ72 made on 2008 Stecher, G.J., Ford, L.A., and Elbert, J.D. (1999). “Equipping a March 25 are also reported. 0.6 Meter Alt-Azimuth Telescope for Photometry”, IAPPP Comm, 76, 68-74. We made R band and V band photometric measurements of 343 Warner, B.D. (2006). A Practical Guide to Lightcurve Photometry Ostara on 2008 October 4 using the 0.6 m “Air Force” Telescope and Analysis. Springer, New York, NY. located at Hobbs Observatory (MPC code 750) near Fall Creek, Wisconsin.
    [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]
  • 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]
  • On the Habitability of Our Universe
    Chapter for the book Consolidation of Fine Tuning On the Habitability of Our Universe Abraham Loeb Astronomy department, Harvard University, 60 Garden Street, Cambridge, MA 02138, USA E-mail: [email protected] Abstract. Is life most likely to emerge at the present cosmic time near a star like the Sun? We consider the habitability of the Universe throughout cosmic history, and conservatively restrict our attention to the context of “life as we know it” and the standard cosmological model, ΛCDM. The habitable cosmic epoch started shortly after the first stars formed, about 30 Myr after the Big Bang, and will end about 10 Tyr from now, when all stars will die. We review the formation history of habitable planets and find that unless habitability around low mass stars is suppressed, life is most likely to exist near ∼ 0.1M stars ten trillion years from now. Spectroscopic searches for biosignatures in the atmospheres of transiting Earth-mass planets around low mass stars will determine whether present-day life is indeed premature or typical from a cosmic perspective. arXiv:1606.08926v2 [astro-ph.CO] 24 Nov 2016 Contents 1 Introduction2 2 The Habitable Epoch of the Early Universe4 2.1 Section Background4 2.2 First Planets4 2.3 Section Summary and Implications5 3 CEMP Stars: Possible Hosts to Carbon Planets in the Early Universe6 3.1 Section Background6 3.2 Star-forming environment of CEMP stars7 3.3 Orbital Radii of Potential Carbon Planets9 3.4 Mass-Radius Relationship for Carbon Planets 13 3.5 Section Summary and Implications 15 4 Water
    [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]
  • OGLE 2004-BLG-254: a K3 III Galactic Bulge Giant Spatially Resolved by A
    Astronomy & Astrophysics manuscript no. 4414arti c ESO 2018 January 9, 2018 OGLE 2004–BLG–254: a K3 III Galactic Bulge Giant spatially resolved by a single microlens⋆ A. Cassan1,2,3, J.-P. Beaulieu1,3, P. Fouqu´e1,4, S. Brillant1,5, M. Dominik1,6, J. Greenhill1,7, D. Heyrovsk´y8, K. Horne1,6, U.G. Jørgensen1,9, D. Kubas1,5, H.C. Stempels6, C. Vinter1,9, M.D. Albrow1,12, D. Bennett1,13, J.A.R. Caldwell1,14,15, J.J. Calitz1,16, K. Cook1,17, C. Coutures1,18, D. Dominis1,19, J. Donatowicz1,20, K. Hill1,7, M. Hoffman1,16, S. Kane1,21, J.-B. Marquette1,3, R. Martin1,22, P. Meintjes1,16, J. Menzies1,23, V.R. Miller12, K.R. Pollard1,12, K.C. Sahu1,14, J. Wambsganss1,2, A. Williams1,22, A. Udalski10,11, M.K. Szyma´nski10,11, M. Kubiak10,11, G. Pietrzy´nski10,11,24, I. Soszy´nski10,11,24, K. Zebru´n˙ 10,11, O. Szewczyk10,11, and Ł. Wyrzykowski10,11,25 (Affiliations can be found after the references) Received ¡date¿ / Accepted ¡date¿ ABSTRACT Aims. We present an analysis of OGLE 2004–BLG–254, a high-magnification (A 60) and relatively short duration (tE 13.2 days) microlensing event in which the source star, a Bulge K-giant, has been spatially resolved◦ ≃ by a point-like lens. We seek to determine≃ the lens and source distance, and provide a measurement of the linear limb-darkening coefficients of the source star in the I and R bands. We discuss the derived values of the latter and compare them to the classical theoretical laws, and furthermore examine the cases of already published microlensed GK-giants limb-darkening measurements.
    [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]
  • 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]
  • Novice Handbook
    THE I RISH F EDERATION O F A STRONOMICAL S OCIETIES PRESENT THE NOVICE ASTRONOMER OBSERVING CHALLENGES HANDBOOK A Self-contained Handbook and Logbook for the Novice Astronomer, as part of the IFAS Observing Certificates Programme AUTUMN 2004 THE OBSERVING CERTIFICATES WORKING GROUP WORKING UNDER THE IRISH FEDERATION OF ASTRONOMICAL SOCIETIES Shane Culleton Irish Astronomical Society South Dublin Astronomical Society John Flannery Irish Astronomical Society South Dublin Astronomical Society Seanie Morris Tullamore Astronomical Society Ronan Newman Galway Astronomy Club Michael O’Connell Shannonside Astronomy Club Tullamore Astronomical Society Albert White Irish Astronomical Society South Dublin Astronomical Society OBSERVING PROGRAMME REGULATIONS 1. To take part in the Observing Certificates Programme you must be a member of one of the member clubs or societies of the IFAS. Check out the list of clubs and links to their websites at the IFAS webpage, www.irishastronomy.org , or on page 4 of this handbook. 2. Observations must be made after September 18 th 2004 (the launch date), AND after the date of purchase of this handbook. 3. You must either post or hand this Handbook to the Observations Secretary who will then verify your recordings. Your Handbook must be received at least 21 days before the star party at which you wish to receive your certificate ( Connaught in January, COSMOS in March, Whirlpool in September). 4. Duplicate observations must be made for each Observing Challenge. If, for example, you observe M31, the Andromeda Galaxy for the Messier Objects Observing Challenge , you cannot use the same observation for the Binocular Sky Observation Challenge . Please remember that the people involved in this project are volunteers who are giving their time freely to run and maintain this programme.
    [Show full text]