APPENDIX D Celestial Coordinates, FIG.D1, Altitude | iOptron 8401

APPENDIX D

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APPENDIX D

Celestial Coordinates

Celestial North Pole

East

Zenith

Median of the location

North

Observer’s horizon

Nadir

Altitude

South

Azimuth

West

Celestial

South Pole

FIG.D1

28

Image 28

iOptron 8401 manual APPENDIX D Celestial Coordinates, FIG.D1, Altitude, Azimuth

Contents

www . iOptron . com ManualGoToNovaTM 8401 Hand-Held Controller Page CONTENTS Page Chapter 0 Quick Start Reference Sky and Telescope The Hubble SiteUseful Links http//hubblesite.org A GPS module makes life a lot easier. It automatically sets the time and location for you 0.2 Getting Started Set Local Time 2007-06-18 Daylight Time saving√ What’s Next? Chapter.1 Set Up And Alignment 1.0 Basic Symbols1.1 Set Up Appendix 1.2.2 Two-Star Align Chapter. 2 Select And Slew NEVER LOOK DIRECTLY AT THE SUN WITH THE NAKED EYES OR WITHYou can define and save new celestial objects in the database 2.1 Planets, sun, moon 2.5 Stars 2.5.1 Named Stars Contains 191 stars 2.5.2 Constellations 2.5.4 Variable Stars2.5.5 SAO Bright Stars 2.6 Constellations Contains 88 constellations 2.7 User Objects Chapter. 3 Other Functions 3.4 Set up tracking Set up tracking speed 3.5 User objectsCheck Appendix A for complete menu structures 3.1 Sync To Target Equatorial Mode FIG.4 Chapter. 4 How to Observe Use slower speed for fine tuning4.2 Observing using arrow keys People usually use alt-zi mode to observe land objects 4.4 Tracking APPENDIX A MENU STRUCTURE APPENDIX B Messier Catalog o M44 Praesepe, the Beehive Cluster open clustero M51 The Whirlpool Galaxy spiral galaxy o M63 Sunflower galaxy spiral galaxy o M57 The Ring Nebula planetary nebula o M42 The Great Orion Nebula diffuse nebulao M43 part of the Orion Nebula de Mairans Nebula diffuse nebula o M76 The Little Dumbell, Cork, or Butterfly planetary nebula o M6 The Butterfly Cluster open cluster o M7 Ptolemys Cluster open clustero M11 The Wild Duck Cluster open cluster o M1 The Crab Nebula supernova remnant APPENDIX C Modern Constellationsconstellation genitive Canis Minoris 1690, Firmamentum Sobiescianum, Hevelius Lynx Microscopium1624, Bartsch Musca Pisces Piscis AustrinusPuppis Pyxis Australe Volans APPENDIX D Celestial Coordinates FIG.D1Altitude Azimuth δ, declination FIG.D2t, hour angle FIG. D3 δ, declination α, right ascension Celestial sphere is an imaginary sphere of infinite radius You need two numbers to define a position on the celestial spherePage Appendix E SPECIFICATIONS GoToNovaTM 8401 Specifications Appendix F Products ListItem # Product IOPTRON TWO YEAR TELESCOPE, MOUNT, AND CONTROLLER WARRANTY