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    Re: Moonrise over Connecticut, 19 October 2021
    From: Frank Reed
    Date: 2021 Oct 20, 18:08 -0700

    How about something relatively simple and directly navigational... Let's assume the observer's latitude and longitude are 41°18.4' N and 72°04.6' W. The local date is 19 October 2021. The sea horizon is visible in the photo (in front of that background of land and houses). The Moon's side-to-side diameter gives us an angular scale. From that we can measure the altitude of the Moon's Upper Limb. So figure out when the sight was taken! What is the UT? How accurate can you be? You can assume a height of eye of 17 feet or so. Go here for basic almanac data if you need it: Clockwork Mapping USNO web app clone (preset).

    Frank Reed

     

       
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