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    Re: Rude Starfinder History
    From: Bill B
    Date: 2014 Jul 16, 15:43 -0400

    On 7/16/2014 2:11 PM, Stan K wrote:
    > My students have found that the fact that the bodies are presented
    > looking from the outside of the celestial sphere, i.e. "backwards" or
    > "reversed", is confusing.
    
    As a supplement to the Rude Star Finder, I would highly recommend "The
    Night Sky" 2-sided planisphere, especially to students learning the
    night sky and having conceptual issues with the "reversed" Rude.
    
    Instead of GHA Aires, it uses time in hours for your time zone.
    (Subtract 1 hour for daylight savings time.) With a little forethought,
    you can adjust your time for longitude differences from the center of
    the time zone. For example I am at approx. 86d 15' W and on eastern time
    (EDT now), so I adjust by 45 minutes as the event will occur aprox. 45
    minutes later than at 75W. (86.25-75 = 11.25. 11.25/15 = 0.75. 0.75 x 60
    = 45).
    
    They are available in increments of 10 degrees latitude. (Mine is 40d to
    50d N, and I also have a 30-40d N.) On the flip side is an
    east/south/west horizon that renders the sky under an approximation of
    your celestial equator with less distortion than a typical planishpere.
    I've gone as far as using a marker and ships curve to lay in a curve
    from the east and west horizon markers on the west/north/east side to
    directly overhead for easier orientation. With a little knowledge one
    can also lay in cardinal points along the horizon line with a marker.
    
    It shows not only the constellations and navigational stars, but the
    Milky Way, globular star clusters, open star clusters, galaxies,
    nebulae, and the ecliptic as well. When I decided to start crossing cel
    nav off my bucket list it is where I began, using the logic that I can't
    shoot it if I can't identify it. It is still my go to to refresh my
    memory of the night sky from month to month.
    
    Other nice features are SHA's ticked off in hour intervals along the
    equator with lines to the pole every 3 hours, and 10d tick marks along
    the SHA lines to the pole. No computer or smart phone, internet
    connection, or batteries needed (except for a flashlight with red
    filter. If you have a shake and bake flashlight, forget the batteries).
    With a little care I can locate a star within 5d elevation. That,
    coupled with images of the constellations and a very rough idea of
    direction makes locating a star a no brainer. The Moon and planets? You
    are on your own there ;-)
    

       
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