A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Sean C
Date: 2014 Aug 11, 01:58 -0700
I was standing on my deck, admiring the moon tonight when I decided to shoot some lunars. A quick check with Stellarium yielded Hamal as the only candidate given my location. I brought my Astra out onto the deck and shot a few. Results (calculated with Frank's website) were as follows:
- 2014 August 11
- Hamal-Moon (near limb) Lunars
- AP: N37°03.3', W076°28.6'; ~46ft.
- Temp.: 70°F, Press.: 30.10 inHg
- Index Error: 1.7' on the arc
Before I calculated anything, I graphed the sights and roughed a line through them. I ignored the first and last sights as I suspected them to be outliers. I picked a time of 06:37:00 as being about the middle of the group and drew a horizontal crossing the line at that point. I used the resulting altitude of 71°44.2' and got an error of +0.7' (19.8' of longitude). I've been pretty busy with work lately and haven't had time to practice, so I'm satisfied with that...for now.
While I was getting set up, checking index error and such, I saw a fantastic meteor streak just below the star Algol (β Persei) at about 06:29:42; altitude ~35°, azimuth ~68°T. And, of course, the moon was "super". ;) All in all, a very pleasant night.