DOCSLIB.ORG

Cma – Objektauswahl NGC

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Cma – Objektauswahl NGC CMa – Objektauswahl NGC NGC 2204 NGC 2263 NGC 2296 NGC 2374 Sternbild- NGC 2206 NGC 2267 NGC 2325 NGC 2380 Übersicht NGC 2207 NGC 2271 NGC 2327 NGC 2383 NGC 2211 NGC 2272 NGC 2345 NGC 2384 NGC 2212 NGC 2280 NGC 2354 NGC 2216 NGC 2283 NGC 2359 NGC 2217 NGC 2287 NGC 2360 NGC 2223 NGC 2292 NGC 2361 NGC 2227 NGC 2293 NGC 2362 NGC 2243 NGC 2295 NGC 2367 Zur Objektauswahl: Nummer anklicken Zur Übersichtskarte: Objekt in Aufsuchkarte anklicken Zum Detailfoto: Objekt in Übersichtskarte anklicken Übersichtskarte Auswahl NGC 2204_2207_2211_2212 Aufsuchkarte Auswahl Auswahl NGC 2204_2211_2212 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2207 ÜbersichtskarteNGC Aufsuch- karte NGC 2206_2217 Aufsuchkarte Auswahl Auswahl NGC 2206 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2217 ÜbersichtskarteNGC Aufsuch- karte NGC 2216_2223_2227 Aufsuchkarte Auswahl Auswahl NGC 2216 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2223 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2227 ÜbersichtskarteNGC Aufsuch- karte NGC 2243 Aufsuchkarte Auswahl Auswahl NGC 2243 ÜbersichtskarteNGC Aufsuch- karte NGC 2263_2271 Aufsuchkarte Auswahl Auswahl NGC 2263 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2271 ÜbersichtskarteNGC Aufsuch- karte NGC 2267 Aufsuchkarte Auswahl Auswahl NGC 2267 ÜbersichtskarteNGC Aufsuch- karte NGC 2272_2280_2292_2293_2295 Aufsuchkarte Auswahl Auswahl NGC 2272_2280 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2292_2293_2295 ÜbersichtskarteNGC Aufsuch- karte NGC 2283_2296 Aufsuchkarte Auswahl Auswahl NGC 2283 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2296 ÜbersichtskarteNGC Aufsuch- karte NGC 2287 Aufsuchkarte Auswahl Auswahl NGC 2287 ÜbersichtskarteNGC Aufsuch- karte NGC 2325 Aufsuchkarte Auswahl Auswahl NGC 2325 ÜbersichtskarteNGC Aufsuch- karte NGC 2327_2345 Aufsuchkarte Auswahl Auswahl NGC 2327 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2345 ÜbersichtskarteNGC Aufsuch- karte NGC 2354_2362_2380 Aufsuchkarte Auswahl Auswahl NGC 2354 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2362 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2380 ÜbersichtskarteNGC Aufsuch- karte NGC 2359_2360_2361_2374 Aufsuchkarte Auswahl Auswahl NGC 2359_2361 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2360 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2374 ÜbersichtskarteNGC Aufsuch- karte NGC 2367_2383_2384 Aufsuchkarte Auswahl Auswahl NGC 2367 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2383_2384 ÜbersichtskarteNGC Aufsuch- karte Auswahl NGC 2204 m mp = 9. 1 13‘ NGC 2204 DetailfotoNGC Übersichts- karte Auswahl NGC 2206 m mp = 12. 2 2.‘3 x 1.‘4 NGC 2206 DetailfotoNGC Übersichts- karte Auswahl NGC 2207 m mp = 11. 4 4.‘3 x 2.‘9 NGC 2207 DetailfotoNGC Übersichts- karte Auswahl NGC 2211 m mp = 14. 0 1.‘4 x 0.‘6 NGC 2212 m mp = 14. 0 1.‘4 x 0.‘9 NGC 2211_NGC 2212 Detailfoto 2211_NGC NGC Übersichts- karte Auswahl NGC 2216 m mp = 14. 0 1.‘4 x 1.‘2 NGC 2216 DetailfotoNGC Übersichts- karte Auswahl NGC 2217 m mp = 11. 5 4.‘8 x 4.‘4 NGC 2217 DetailfotoNGC Übersichts- karte Auswahl NGC 2223 m mp = 12. 2 3.‘3 x 3.‘0 NGC 2223 DetailfotoNGC Übersichts- karte Auswahl NGC 2227 m mp = 14. 0 2.‘3 x 1.‘2 NGC 2227 DetailfotoNGC Übersichts- karte Auswahl NGC 2243 m mp = 10. 2 13‘ NGC 2243 DetailfotoNGC Übersichts- karte Auswahl NGC 2263 m mp = 13. 0 2.‘6 x 1.‘0 NGC 2263 DetailfotoNGC Übersichts- karte Auswahl NGC 2267 m mp = 13. 2 1.‘7 x 1.‘3 NGC 2267 DetailfotoNGC Übersichts- karte Auswahl NGC 2271 m mp = 13. 2 1.‘9 x 1.‘3 NGC 2271 DetailfotoNGC Übersichts- karte Auswahl NGC 2272 m mp = 12. 9 2.‘1 x 1.‘6 NGC 2272 DetailfotoNGC Übersichts- karte Auswahl NGC 2280 m mp = 11. 8 5.‘6 x 3.‘2 NGC 2280 DetailfotoNGC Übersichts- karte Auswahl NGC 2283 m mp = 13. 0 2.‘8 x 2.‘0 NGC 2283 DetailfotoNGC Übersichts- karte Auswahl NGC 2287 m mp = 5. 0 38‘ NGC 2287 DetailfotoNGC Übersichts- karte Auswahl NGC 2292 m mp = 11. 8 4.‘2 x 2.‘3 NGC 2293 m mp = 11. 7 4.‘3 x 3.‘0 NGC 2295 m mp = 14. 0 2.‘4 x 0.‘7 NGC 2292_NGC 2293_NGC 2295 Detailfoto 2293_NGC 2292_NGC NGC Übersichts- karte Auswahl NGC 2296 m mp = 13. 0 6‘ x 5‘ NGC 2296 DetailfotoNGC Übersichts- karte Auswahl NGC 2325 m mp = 12. 2 3.‘7 x 2.‘2 NGC 2325 DetailfotoNGC Übersichts- karte Auswahl NGC 2327 10‘ x 10‘ NGC 2327 DetailfotoNGC Übersichts- karte Auswahl NGC 2345 m mp = 8. 3 12‘ NGC 2345 DetailfotoNGC Übersichts- karte Auswahl NGC 2354 m mp = 8. 9 20‘ NGC 2354 DetailfotoNGC Übersichts- karte Auswahl NGC 2359 8‘x 6‘ NGC 2359_NGC 2361 Detailfoto 2359_NGC NGC Übersichts- karte Auswahl NGC 2360 m mp = 9. 5 13‘ NGC 2360 DetailfotoNGC Übersichts- karte Auswahl NGC 2362 m mp = 4. 0 8‘ NGC 2362 DetailfotoNGC Übersichts- karte Auswahl NGC 2367 m mp = 8. 0 3.‘5 NGC 2367 DetailfotoNGC Übersichts- karte Auswahl NGC 2374 m mp = 7. 5 19‘ NGC 2374 DetailfotoNGC Übersichts- karte Auswahl NGC 2380 m mp = 12. 5 2.‘5 x 2.‘3 NGC 2380 DetailfotoNGC Übersichts- karte Auswahl NGC 2383 m mp = 8. 5 6‘ NGC 2383 DetailfotoNGC Übersichts- karte Auswahl NGC 2384 m mp = 8. 0 25‘ NGC 2384 DetailfotoNGC Übersichts- karte.
Load more

Recommended publications
  • Of Galaxies, Stars, Planets and People
    The Cosmic Journeys of Galaxies,A Research Programme forStars, the Armagh Observatory and Planetarium Planets and People This document was produced by the staff of the Armagh Observatory and Planetarium, in particular through discussions and contributions from the tenured astronomers, together with input from the Governors and the Management Committee. The document was edited by the Director, Michael Burton and designed by Aileen McKee. Produced in March 2017 Front Cover Images The Four Pillars of the Armagh Observatory and Planetarium Research Outreach The Armagh Observatory was founded in 1790 as The Armagh Planetarium was founded by Dr Eric part of Archbishop Richard Robinson’s vision to see Lindsay, the seventh director of the Observatory, as the creation of a University in the City of Armagh. part of his vision to communicate the excitement of It is the oldest scientific institution in Northern astronomy and science to the public. It opened on Ireland and the longest continuously operating the 1st of May, 1968 and is the oldest operating astronomical research institution in the UK and planetarium in the UK and Ireland. Ireland. History Heritage Dreyer's NGC – the New General Catalogue – was The Observatory has been measuring the weather published in 1888 by JLE Dreyer, fourth Director of conditions at 9am every day since 1794, a the Observatory. It has been used extensively by meteorological record covering more than 200 astronomers ever since. This is his annotated copy, years, believed to be longest standing in the British complete with all known corrections at the time. Isles. This image shows the sunshine recorder and Galaxies and nebulae are still often cited by their anemometer.
    [Show full text]
  • How to Make $1000 with Your Telescope! – 4 Stargazers' Diary
    Fort Worth Astronomical Society (Est. 1949) February 2010 : Astronomical League Member Club Calendar – 2 Opportunities & The Sky this Month – 3 How to Make $1000 with your Telescope! – 4 Astronaut Sally Ride to speak at UTA – 4 Aurgia the Charioteer – 5 Stargazers’ Diary – 6 Bode’s Galaxy by Steve Tuttle 1 February 2010 Sunday Monday Tuesday Wednesday Thursday Friday Saturday 1 2 3 4 5 6 Algol at Minima Last Qtr Moon Æ 5:48 am 11:07 pm Top ten binocular deep-sky objects for February: M35, M41, M46, M47, M50, M93, NGC 2244, NGC 2264, NGC 2301, NGC 2360 Top ten deep-sky objects for February: M35, M41, M46, M47, M50, M93, NGC 2261, NGC 2362, NGC 2392, NGC 2403 7 8 9 10 11 12 13 Algol at Minima Morning sports a Moon at Apogee New Moon Æ super thin crescent (252,612 miles) 8:51 am 7:56 pm Moon 8:00 pm 3RF Star Party Make use of the New Moon Weekend for . better viewing at the Dark Sky Site See Notes Below New Moon New Moon Weekend Weekend 14 15 16 17 18 19 20 Presidents Day 3RF Star Party Valentine’s Day FWAS Traveler’s Guide Meeting to the Planets UTA’s Maverick Clyde Tombaugh Ranger 8 returns Normal Room premiers on Speakers Series discovered Pluto photographs and NatGeo 7pm Sally Ride “Fat Tuesday” Ash Wednesday 80 years ago. impacts Moon. 21 22 23 24 25 26 27 Algol at Minima First Qtr Moon Moon at Perigee Å (222,345 miles) 6:42 pm 12:52 am 4 pm {Low in the NW) Algol at Minima Æ 9:43 pm Challenge binary star for month: 15 Lyncis (Lynx) Challenge deep-sky object for month: IC 443 (Gemini) Notable carbon star for month: BL Orionis (Orion) 28 Notes: Full Moon Look for a very thin waning crescent moon perched just above and slightly right of tiny Mercury on the morning of 10:38 pm Feb.
    [Show full text]
  • Feb BACK BAY 2019
    Feb BACK BAY 2019 The official newsletter of the Back Bay Amateur Astronomers CONTENTS COMING UP Gamma Burst 2 Feb 7 BBAA Meeting Eclipse Collage 3 7:30-9PM TCC, Virginia Beach NSN Article 6 Heart Nebula 7 Feb 8 Silent Sky Club meeting 10 10-11PM Little Theatre of VB Winter DSOs 11 Contact info 16 Feb 8 Cornwatch Photo by Chuck Jagow Canon 60Da, various exposures, iOptron mount with an Orion 80ED Calendar 17 dusk-dawn The best 9 out of 3465 images taken from about 10:00 PM on the 20th Cornland Park through 2:20 AM on the 21st. Unprocessed images (only cropped). Feb 14 Garden Stars 7-8:30PM LOOKING UP! a message from the president Norfolk Botanical Gardens This month’s most talked about astronomy event has to be the total lunar Feb 16 Saturday Sun-day eclipse. The BBAA participated by supporting the Watch Party at the 10AM-1PM Chesapeake Planetarium. Anyone in attendance will tell you it was COLD, but Elizabeth River Park manageable if you wore layers, utilized the planetarium where Dr. Robert Hitt seemed to have the thermostat set to 100 degrees, and drank copious amounts Feb 23 Skywatch of the hot coffee that Kent Blackwell brewed in the back office. 6PM-10PM The event had a huge following on Facebook but with the cold Northwest River Park temperatures, we weren’t sure how many would come out. By Kent’s estimate there were between 100–200 people in attendance. Many club members set up telescopes, as well as a few members of the public too.
    [Show full text]
  • February 14, 2015 7:00Pm at the Herrett Center for Arts & Science Colleagues, College of Southern Idaho
    Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting President’s Message Saturday, February 14, 2015 7:00pm at the Herrett Center for Arts & Science Colleagues, College of Southern Idaho. Public Star Party Follows at the It’s that time of year when obstacles appear in the sky. In particular, this year is Centennial Obs. loaded with fog. It got in the way of letting us see the dance of the Jovian moons late last month, and it’s hindered our views of other unique shows. Still, members Club Officers reported finding enough of a clear sky to let us see Comet Lovejoy, and some great photos by members are popping up on the Facebook page. Robert Mayer, President This month, however, is a great opportunity to see the benefit of something [email protected] getting in the way. Our own Chris Anderson of the Herrett Center has been using 208-312-1203 the Centennial Observatory’s scope to do work on occultation’s, particularly with asteroids. This month’s MVAS meeting on Feb. 14th will give him the stage to Terry Wofford, Vice President show us just how this all works. [email protected] The following weekend may also be the time the weather allows us to resume 208-308-1821 MVAS-only star parties. Feb. 21 is a great window for a possible star party; we’ll announce the location if the weather permits. However, if we don’t get that Gary Leavitt, Secretary window, we’ll fall back on what has become a MVAS tradition: Planetarium night [email protected] at the Herrett Center.
    [Show full text]
  • Strong Evidence for the Density-Wave Theory of Spiral Structure from a Multi-Wavelength Study of Disk Galaxies Hamed Pour-Imani University of Arkansas, Fayetteville
    University of Arkansas, Fayetteville ScholarWorks@UARK Theses and Dissertations 8-2018 Strong Evidence for the Density-wave Theory of Spiral Structure from a Multi-wavelength Study of Disk Galaxies Hamed Pour-Imani University of Arkansas, Fayetteville Follow this and additional works at: http://scholarworks.uark.edu/etd Part of the Physical Processes Commons, and the Stars, Interstellar Medium and the Galaxy Commons Recommended Citation Pour-Imani, Hamed, "Strong Evidence for the Density-wave Theory of Spiral Structure from a Multi-wavelength Study of Disk Galaxies" (2018). Theses and Dissertations. 2864. http://scholarworks.uark.edu/etd/2864 This Dissertation is brought to you for free and open access by ScholarWorks@UARK. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of ScholarWorks@UARK. For more information, please contact [email protected], [email protected]. Strong Evidence for the Density-wave Theory of Spiral Structure from a Multi-wavelength Study of Disk Galaxies A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Physics by Hamed Pour-Imani University of Isfahan Bachelor of Science in Physics, 2004 University of Arkansas Master of Science in Physics, 2016 August 2018 University of Arkansas This dissertation is approved for recommendation to the Graduate Council. Daniel Kennefick, Ph.D. Dissertation Director Vincent Chevrier, Ph.D. Claud Lacy, Ph.D. Committee Member Committee Member Julia Kennefick, Ph.D. William Oliver, Ph.D. Committee Member Committee Member ABSTRACT The density-wave theory of spiral structure, though first proposed as long ago as the mid-1960s by C.C.
    [Show full text]
  • A Basic Requirement for Studying the Heavens Is Determining Where In
    Abasic requirement for studying the heavens is determining where in the sky things are. To specify sky positions, astronomers have developed several coordinate systems. Each uses a coordinate grid projected on to the celestial sphere, in analogy to the geographic coordinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle (the fundamental plane of the geographic system is the Earth's equator) . Each coordinate system is named for its choice of fundamental plane. The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the one most closely related to the geographic coordinate system, because they use the same fun­ damental plane and the same poles. The projection of the Earth's equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles on to the celest ial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate systems: the geographic system is fixed to the Earth; it rotates as the Earth does . The equatorial system is fixed to the stars, so it appears to rotate across the sky with the stars, but of course it's really the Earth rotating under the fixed sky. The latitudinal (latitude-like) angle of the equatorial system is called declination (Dec for short) . It measures the angle of an object above or below the celestial equator. The longitud inal angle is called the right ascension (RA for short).
    [Show full text]
  • Stargazer Vice President: James Bielaga (425) 337-4384 Jamesbielaga at Aol.Com P.O
    1 - Volume MMVII. No. 1 January 2007 President: Mark Folkerts (425) 486-9733 folkerts at seanet.com The Stargazer Vice President: James Bielaga (425) 337-4384 jamesbielaga at aol.com P.O. Box 12746 Librarian: Mike Locke (425) 259-5995 mlocke at lionmts.com Everett, WA 98206 Treasurer: Carol Gore (360) 856-5135 janeway7C at aol.com Newsletter co-editor: Bill O’Neil (774) 253-0747 wonastrn at seanet.com Web assistance: Cody Gibson (425) 348-1608 sircody01 at comcast.net See EAS website at: (change ‘at’ to @ to send email) http://members.tripod.com/everett_astronomy nearby Diablo Lake. And then at night, discover the night sky like EAS BUSINESS… you've never seen it before. We hope you'll join us for a great weekend. July 13-15, North Cascades Environmental Learning Center North Cascades National Park. More information NEXT EAS MEETING – SATURDAY JANUARY 27TH including pricing, detailed program, and reservation forms available shortly, so please check back at Pacific Science AT 3:00 PM AT THE EVERETT PUBLIC LIBRARY, IN Center's website. THE AUDITORIUM (DOWNSTAIRS) http://www.pacsci.org/travel/astronomy_weekend.html People should also join and send mail to the mail list THIS MONTH'S MEETING PROGRAM: [email protected] to coordinate spur-of-the- Toby Smith, lecturer from the University of Washington moment observing get-togethers, on nights when the sky Astronomy department, will give a talk featuring a clears. We try to hold informal close-in star parties each month visualization presentation he has prepared called during the spring, summer, and fall months on a weekend near “Solar System Cinema”.
    [Show full text]
  • Arxiv:2012.05245V2 [Astro-Ph.GA] 5 May 2021
    Draft version May 6, 2021 Typeset using LATEX twocolumn style in AASTeX63 Charting the Galactic acceleration field I. A search for stellar streams with Gaia DR2 and EDR3 with follow-up from ESPaDOnS and UVES Rodrigo Ibata 1 | Khyati Malhan 2 | Nicolas Martin 1, 3 | Dominique Aubert1 | Benoit Famaey 1 | Paolo Bianchini 1 | Giacomo Monari 1 | Arnaud Siebert 1 | Guillaume F. Thomas 4, 5 | Michele Bellazzini 6 | Piercarlo Bonifacio7 | Elisabetta Caffau7 | Florent Renaud 8 | arXiv:2012.05245v2 [astro-ph.GA] 5 May 2021 1Universit´ede Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, F-67000 Strasbourg, France 2The Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm, Sweden 3Max-Planck-Institut f¨urAstronomie, K¨onigstuhl17, D-69117, Heidelberg, Germany 4Instituto de Astrof´ısica de Canarias, E-38205 La Laguna, Tenerife, Spain 5Universidad de La Laguna, Dpto. Astrof´ısica, E-38206 La Laguna, Tenerife, Spain 6INAF - Osservatorio di Astrofisica e Scienza dello Spazio, via Gobetti 93/3, I-40129 Bologna, Italy 7GEPI, Observatoire de Paris, Universit´ePSL, CNRS, 5 Place Jules Janssen, 92190 Meudon, France 8Department of Astronomy and Theoretical Physics, Lund Observatory, Box 43, 221 00 Lund, Sweden Corresponding author: Rodrigo Ibata [email protected] 2 Ibata et al. Submitted to ApJ ABSTRACT We present maps of the stellar streams detected in the Gaia Data Release 2 (DR2) and Early Data Release 3 (EDR3) catalogs using the STREAMFINDER algorithm. We also report the spectroscopic follow-up of the brighter DR2 stream members obtained with the high-resolution CFHT/ESPaDOnS and VLT/UVES spectrographs as well as with the medium-resolution NTT/EFOSC2 spectrograph.
    [Show full text]
  • Culpeper Astronomy Club Meeting February 26, 2018 Overview
    The Moon: Our Neighbor Culpeper Astronomy Club Meeting February 26, 2018 Overview • Introductions • Radio Astronomy: The Basics • The Moon • Constellations: Monoceros, Canis Major, Puppis • Observing Session (Tentative) Radio Astronomy • Stars, galaxies and gas clouds emit visible light as well as emissions from other parts of the electromagnetic spectrum • Includes radio waves, gamma rays, X- rays, and infrared radiation • Radio astronomy is the study of the universe through analysis of celestial objects' radio emission • the longest-wavelength, least energetic form of radiation on the electromagnetic spectrum • The first detection of radio waves from an astronomical object was in 1932 • Karl Jansky at Bell Telephone Laboratories observed radiation coming from the Milky Way Radio Astronomy • A radio telescope has three basic components: • One or more antennas pointed to the sky, to collect the radio waves • A receiver and amplifier to boost the very weak radio signal to a measurable level, and • A recorder to keep a record of the signal Radio Astronomy • Subsequent observations have identified a number of different sources of radio emission • Include stars and galaxies, as well as entirely new classes of objects, such as: • Radio galaxies: nuclei emit jets of high- velocity gas (near the speed of light) above and below the galaxy -- the jets interact with magnetic fields and emit radio signals • Quasars: distant objects powered by black holes a billion times as massive as our sun • Pulsars: the rapidly spinning remnants of supernova explosions
    [Show full text]
  • The Intermediate-Age Open Cluster NGC 2158
    Mon. Not. R. Astron. Soc. 000, 000–000 (2002) Printed 28 October 2018 (MN LATEX style file v1.4) ⋆ The intermediate-age open cluster NGC 2158 Giovanni Carraro1, L´eo Girardi1,2 and Paola Marigo1† 1 Dipartimento di Astronomia, Universit`adi Padova, Vicolo dell’Osservatorio 2, I-35122 Padova, Italy 2 Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, I-34131 Trieste, Italy Submitted: October 2001 ABSTRACT We report on UBV RI CCD photometry of two overlapping fields in the region of the intermediate-age open cluster NGC 2158 down to V = 21. By analyzing Colour-Colour (CC) and Colour-Magnitude Diagrams (CMD) we infer a reddening EB−V = 0.55 ± 0.10, a distance of 3600 ± 400 pc, and an age of about 2 Gyr. Synthetic CMDs performed with these parameters (but fixing EB−V = 0.60 and [Fe/H] = −0.60), and including binaries, field contamination, and photometric errors, allow a good description of the observed CMD. The elongated shape of the clump of red giants in the CMD is interpreted as resulting from a differential reddening of about ∆EB−V =0.06 across the cluster, in the direction perpendicular to the Galactic plane. NGC 2158 turns out to be an intermediate-age open cluster with an anomalously low metal content. The combination of these parameters together with the analysis of the cluster orbit, suggests that the cluster belongs to the old thin disk population. Key words: Open clusters and associations: general – open clusters and associations: individual: NGC 2158 - Hertzsprung-Russell (HR) diagram 1 INTRODUCTION the present paper.
    [Show full text]
  • SAC's 110 Best of the NGC
    SAC's 110 Best of the NGC by Paul Dickson Version: 1.4 | March 26, 1997 Copyright °c 1996, by Paul Dickson. All rights reserved If you purchased this book from Paul Dickson directly, please ignore this form. I already have most of this information. Why Should You Register This Book? Please register your copy of this book. I have done two book, SAC's 110 Best of the NGC and the Messier Logbook. In the works for late 1997 is a four volume set for the Herschel 400. q I am a beginner and I bought this book to get start with deep-sky observing. q I am an intermediate observer. I bought this book to observe these objects again. q I am an advance observer. I bought this book to add to my collect and/or re-observe these objects again. The book I'm registering is: q SAC's 110 Best of the NGC q Messier Logbook q I would like to purchase a copy of Herschel 400 book when it becomes available. Club Name: __________________________________________ Your Name: __________________________________________ Address: ____________________________________________ City: __________________ State: ____ Zip Code: _________ Mail this to: or E-mail it to: Paul Dickson 7714 N 36th Ave [email protected] Phoenix, AZ 85051-6401 After Observing the Messier Catalog, Try this Observing List: SAC's 110 Best of the NGC [email protected] http://www.seds.org/pub/info/newsletters/sacnews/html/sac.110.best.ngc.html SAC's 110 Best of the NGC is an observing list of some of the best objects after those in the Messier Catalog.
    [Show full text]
  • Atlas Menor Was Objects to Slowly Change Over Time
    C h a r t Atlas Charts s O b by j Objects e c t Constellation s Objects by Number 64 Objects by Type 71 Objects by Name 76 Messier Objects 78 Caldwell Objects 81 Orion & Stars by Name 84 Lepus, circa , Brightest Stars 86 1720 , Closest Stars 87 Mythology 88 Bimonthly Sky Charts 92 Meteor Showers 105 Sun, Moon and Planets 106 Observing Considerations 113 Expanded Glossary 115 Th e 88 Constellations, plus 126 Chart Reference BACK PAGE Introduction he night sky was charted by western civilization a few thou - N 1,370 deep sky objects and 360 double stars (two stars—one sands years ago to bring order to the random splatter of stars, often orbits the other) plotted with observing information for T and in the hopes, as a piece of the puzzle, to help “understand” every object. the forces of nature. The stars and their constellations were imbued with N Inclusion of many “famous” celestial objects, even though the beliefs of those times, which have become mythology. they are beyond the reach of a 6 to 8-inch diameter telescope. The oldest known celestial atlas is in the book, Almagest , by N Expanded glossary to define and/or explain terms and Claudius Ptolemy, a Greco-Egyptian with Roman citizenship who lived concepts. in Alexandria from 90 to 160 AD. The Almagest is the earliest surviving astronomical treatise—a 600-page tome. The star charts are in tabular N Black stars on a white background, a preferred format for star form, by constellation, and the locations of the stars are described by charts.
    [Show full text]