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    Mirage at Isles of Shoals
    From: Jim Rives
    Date: 2022 Apr 12, 12:21 -0700

    Went down to the sea to shoot a few Moon LOP's and try a lunar between the sun and the Moon yesterday.  Instead of floating islands, we have new bridges between them.  Probably won't get very good results for the Moon's LOP. 

    The lunar however, was surprising.  Usually I try to shoot a moon-sun distance when "in distance", or as near to 90 degrees as practical.  I was a bit late this time due to recent weather and the distance was nearly 120 degrees.  When trying to touch tangents of the two bodies when close to 90 degrees I find getting the images to settle down as they converge quite difficult.  At 120, though, it was nearly as easy as bringing the sun or moon to the horizon.  I had expected it to be more difficult.  I wonder how accurate one could actually be in trying to do lunars on a rolling ship using the peep holes in the sights of a 17th century quadrant.  I suppose anything withing a degree of longitude was better than nothing.  

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