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  • Argo Navis User Manual Edition 10, May 2008, for Argo Navis Model 102/102B, Firmware Vers.2.0.1 1

    Argo Navis

    Argo NavisArgo NavisArgo NavisArgo NavisTM

    User Manual

    Edition 10, May 2008, for Argo NavisTM Model 102 & 102B,

    Firmware version 2.0.1

  • Argo Navis User Manual Edition 10, May 2008, for Argo Navis Model 102/102B, Firmware Vers.2.0.1 2

    Argo Navis

    Congratulations

    You have purchased one of the most sophisticated devices for rapidly and confidently locating celestial objects. The Argo NavisTM Digital Telescope Computer (DTC) brings not only accurate positioning information to your telescope but also provides an enormous detailed database of tens of thousands of objects.

    Stars, galaxies, galaxy clusters, globular clusters, open clusters, planetary nebulae, nebulae, planets, asteroids, comets, earth-orbiting satellites and more.

    Magnitudes, surface brightness, object sizes, common names, stellar classifications, stellar luminosity classes, double star separations, variable star periods, Hubble galaxy morphologies, constellation, detailed parameters of planets, comets, asteroids, satellites and a wealth of other information are available at your fingertips with a simple spin of the dial.

    A large range of mounts can accommodate the Argo NavisTM including Dobsonians, Forks, German Equatorials and Equatorial Tables.

    Handheld and powered by AA batteries, or an optional external DC source, Argo NavisTM operates completely standalone.

    After fitting a pair of optical encoders to your mount, using the Argo NavisTM is simple. Perform a quick star alignment and off you go. There is no need to level or accurately polar align your mount. It's fast and easy.

    Using the innovative, Intelligent Editing SystemTM, objects from the in-built

    catalogs can be accessed quickly and easily by name. You can select a particular object and then Argo NavisTM can provide you with guiding information that will allow you to zero-in on it by simply manually turning the scope.

    Alternatively, objects of interest can be reported to you on the display in real-time as you move your scope. Argo NavisTM has a powerful 32-bit CPU at its heart that will easily allow you to continuously track satellites. The sophisticated software even accounts for precession, nutation and atmospheric refraction. A battery backed real-time clock provides local time, UTC time, Julian date and sidereal time.

    The versatile and powerful tour mode allows you to tailor your searches of the sky so that you may seek to find the types of objects that interest you the most, be they easy or highly challenging.

    Though designed for standalone use, Argo NavisTM can also be interfaced to your PC or laptop, which brings about a wealth of additional features. It can operate with many of the popular sky charting packages to provide you with a tracking cursor display. Using the supplied ArgonautTM utility, it even lets you store into its FLASH memory over a thousand of your own user-defined objects including magnitudes and descriptions. You can erase them and store new ones as often as you like.

    This User Manual shows how the Argo NavisTM Digital Telescope Computer can make your observing sessions more enjoyable and rewarding.

  • Argo Navis User Manual Edition 10, May 2008, for Argo Navis Model 102/102B, Firmware Vers.2.0.1 3

    Argo Navis

    Contents This manual ......................................................................................................................... 6 The Argo Navis interfaces ............................................................................................... 7

    The user interface ........................................................................................................ 7 The encoder interface .................................................................................................. 8 The serial interface....................................................................................................... 9

    Initial setup of the Argo Navis ........................................................................................ 11 Power sources ........................................................................................................... 11 Setting the initial mount type ...................................................................................... 13 Setting encoder steps (resolution).............................................................................. 13 Setting altitude steps.................................................................................................. 14 Setting azimuth steps................................................................................................. 14 Testing encoder communication................................................................................. 15 Determining encoder direction senses ....................................................................... 16 Setting the final mount type........................................................................................ 17 Setting the local time zone, date and time.................................................................. 19 Setting the location..................................................................................................... 21 Setting refraction modelling........................................................................................ 23

    Alignment procedures........................................................................................................ 24 Purpose of alignment ................................................................................................. 24 Fork Exact Align and German Equatorial Exact Align Mounts .................................... 24 Alt/Az Dobsonian Mounts including on Equatorial Tables........................................... 25 Fork Rough Align Mounts........................................................................................... 27 GEM Rough Align ...................................................................................................... 28

    An introductory run ............................................................................................................ 31 Operating modes ............................................................................................................... 36

    MODE ALIGN ................................................................................................................ 37 MODE ALIGN STAR...................................................................................................... 39 MODE AZ ALT............................................................................................................... 43 MODE CATALOG.......................................................................................................... 44 MODE ENCODER ......................................................................................................... 50 MODE EQ TABLE.......................................................................................................... 54 MODE FIX ALT REF...................................................................................................... 57 MODE IDENTIFY........................................................................................................... 61 MODE RA DEC.............................................................................................................. 68 MODE SETUP ............................................................................................................... 70 MODE SIDEREAL ......................................................................................................... 72 MODE STATUS............................................................................................................. 73 MODE TIME .................................................................................................................. 74 MODE TIMER................................................................................................................ 75 MODE TOUR................................................................................................................. 76 SETUP ALIGN PICK...................................................................................................... 83

  • Argo Navis User Manual Edition 10, May 2008, for Argo Navis Model 102/102B, Firmware Vers.2.0.1 4

    Argo Navis

    SETUP ALT REF ........................................................................................................... 85 SETUP ALT STEPS....................................................................................................... 87 SETUP ATLAS .............................................................................................................. 88 SETUP AZ STEPS......................................................................................................... 90 SETUP BRIGHTNESS................................................................................................... 91 SETUP CONTRAST ...................................................................................................... 92 SETUP DATE/TIME....................................................................................................... 93 SETUP DEBUG ............................................................................................................. 96 SETUP DEFAULTS ....................................................................................................... 97 SETUP ENC TIMING..................................................................................................... 98 SETUP EQ TABLE ....................................

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