NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: G Becker
Date: 2013 Oct 3, 12:06 -0400
Hello,
I was not present at the meeting. It was mentioned a geodetic monument was located at the site. The pdf file I attached listed all the geodetic monuments at that location and their reference points. I realize the information was after the fact, but I assume Frank and others live near the site. Using the monument Beavertail and back sighting the reference monuments, a person could set a new reference point at the waters edge. The new reference point could have a “precise” possibly accurate location and elevation*, usable at any desired time in the foreseeable future.
* Running elevation with a theodolite is a bad practice.
-----Original Message-----
From: NavList@fer3.com
[mailto:NavList@fer3.com] On Behalf Of Antoine
Couëtte
Sent: Thursday, October 03, 2013
11:22 AM
To: george@gwbeckerpls.com
Subject: [NavList] Re: Sextant
practice, experimentation --Saturday in RI.
RE : http://fer3.com/arc/m2.aspx/Sextant-practice-experimentation-Saturday-RI-Pennino-sep-2013-g25232
Hello Bruce,
Hello to you too M. G Becker,
Thanks for your data.
Sorry for my query : what was exactly your WGS 84 Position ? I am a bit confused at the explanation given in " http://fer3.com/arc/imgx/BEAVER-CONTROL.pdf " as an appendix to " http://fer3.com/arc/m2.aspx?i=125240 " by G Becker .
Best regards
Kermit
Antoine M. Couëtte
*****************************************************************************
Re: Sextant practice,
experimentation --Saturday in RI.
From: Bruce J. Pennino
Date: 2013 Sep 29, 10:08 -0400
Previous messageNext messageReply to this message
Hello:
We met at Beavertail Light and had a good day. Perfect weather. The
"Light" Association is building a new platform on the old Light
Foundation. FER and I surveyed the elevation of the ground on the south side of
the road, just south of the fog horn device; at the edge of the bluff. The
ground at this point is very close to the elevation of the new platform. The
ground elevation is 25 ft more or less above MSL. FER may want to refine this
value.
With my total station I had a HoE of 29.6 ft when I measured a dip angle (mean)
of 5 min 14 seconds. Air temp was 64 F, water temp, 65 F, atmos. P 30.27
", Wind {at} 6 mph. Frank and I used the theodolite to sight the UL of
moon. I read the angles and FER observed time GPS/UT
Herewith are the ZENITH angles where 0 deg is vertical with times:
GMT/UT 16 hr 36 min 38.3 seconds ZD 66d 18' 09"
16 hr 37 min 42.7 seconds ZD 66 d 30' 03"
The fractional second of time is estimated by FER
An excellent location for walking, picnics, and CN observations. Crowded and
busy on weekends, but plenty of parking.
Best regards,
Bruce
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