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    Lunar attempt
    From: Doug Royer
    Date: 2003 May 7, 11:04 -0700

    I would like some help from you guys to check some precomputations for a
    Lunar attempt this weekend if practical.My software can only perform
    intercepts and LOP positioning so it isn't any help on this.It doesn't have
    a starfinder feature.I've used Ho-2102D to precompute this info and just
    need to know if I'm in the ballpark.
    I've weaseled my way onboard an 85 ft. SAR vessel to be positioned off San
    Nicolas Island, position approximately 34* 04' N  120* 22.5' W, 05-10 thru
    05-12.This will give me a stable platform to attempt this as it will be
    anchored on the lee side of the island.The actual position will only be
    known once the pick is set but this is a good AP.
    It appears that Regulus is the only star in the appropriate position with
    the Moon to attempt this.Am I right or wrong?
    If conditions are right to do this I've precompted times for both nights
    05-10 and 05-11.I should be able to see the horizon at these times clear
    enough to take the altitudes.
    Useing Ho-2102D I am only able to get a rough idea of the bodies alts., Zn
    and angular distance. It appears on 05-10 the Moon and Regulus are seperated
    by less distance than during 05-11.I'll be attempting this both nights but
    seem to recall someone writeing that the greater the distance of the bodies
    the better.Am I reading this correctly?Their altitudes are fairly equal
    during these times.Because of the area I estimate the vessel will be
    positioned I will only be able to view Regulus untill 2300 hrs. zt.All times
    are zt, gmt = + 7 hrs.
    05-10. 2000 hrs. Reg. alt. = 68* Moon alt. = 66*  angular distance    = 30*
              2100 hrs. Reg. alt = 63*  Moon alt. = 68*      "             "
    = 27*
              2200 hrs. Reg. alt. = 54* Moon alt. = 62*      "             "
    = 20*
              2300 hrs. Reg. alt = 43*  Moon alt. = 53*      "             "
    = 15*
    05-11  2000 hrs. Reg. alt. = 68* Moon alt. = 55*      "             "
    = 48*
              2100 hrs. Reg. alt. = 63* Moon alt. = 61*      "             "
    = 57*
              2200 hrs. Reg. alt. = 54* Moon alt. = 61*      "             "
    = 48*
              2300 hrs. Reg. alt. = 42* Moon alt. = 56*      "             "
    = 36*
    I didn't include the LHA aries etc. even though they were calculated to use
    the 2102.If needed write back and I will provide.If you see another body to
    use before 2300 hrs. zt let me know and I will precompute.In case the
    conditions are such as I can't use Regulus I want to be prepared. Thanks

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