Longitude of cardinal points

  • Anonymous - 2013-09-15

    I was trying to determine the ascendant using Stellarium and can do that only approximately today. Elsewhere I see that the term "ascendant" rubs people the wrong way, hence I will phrase my request as follows:

    Stellarium has the ability to display the Ecliptic. It also has the ability to display the Horizon for a given point of observation (using pretty landscapes). I would like to see the ecliptic longitude (of date) of the two points (East and West) where the Ecliptic intersects the horizon. Am I making sense and can this be done?

  • barrykgerdes

    barrykgerdes - 2013-09-15

    The points you need will need your location/date/time entered into Stellarium

    1. load the compass marks plug in
    2. Mark the view/markings to display the ecliptic
    3. Turn off the ground
    4. Turn on the alt/azm grid
    5. Locate the intersection of the ecliptic and the 0 altitude line
    6. zoom in for the required resolution
    7. read off this point

    Please note that the sky display will be orientated to the true current positions and will not correspond to the astrological charts.




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