NavList:

RE : http://fer3.com/arc/m2.aspx/Moon-Saturn-stars-last-night-FrankReed-jun-2013-g24438

and

http://fer3.com/arc/m2.aspx/Moon-Saturn-stars-last-night-PeterHakel-jun-2013-g24444

Hello Frank and Peter,

Thanks to you Frank for publishing your Moon L.A.N. observations.

From your data, with :

Jun 20th, 2013, TT-UT=+68.3 s, HOE=12ft, P=1013.25mb=29.92Hg, T=+10°C, and steady Observer

I am getting :

Moon South Transit UT=02h25m50.0s

which translates into:

Observer's Position at transit time : N 41°21'4 / W 071°45'5

Observations dispersion one Sigma = 0.3 NM, which given the rather flattened curve yields : Latitude one Sigma SDEV 0.3 NM and Longitude one Sigma SDEV 1.3'

Above results are quite close from you own determination, Peter - just within one NM - which you published as N 41°20' W 071°47'0

Frank from which exact position did you actually observe ?

I think that given your description of your quite difficult and demanding environment you achieved a quite remarkable Moon L.A.N.

From this position, I am getting the following intercepts and azimuths on your other bodies :

02:08:05 Saturn 35°56'8 i=+4.2 NM , Z=199.6°
02:17:13 Antares 20°42'8 i=-4.0 NM , Z=165.1°
02:23:00 Saturn 34°41'8 i=-8.4 NM , Z=203.9°
02:28:36 Arcturus 61°40'8 i=+1.4 NM , Z=224.8°
02:39:33 Arcturus 60°12'8 i=+3.7 NM , Z=229.1°

As you noticed, these latter observations show a much greater scatter (4.3'), and if we were using them alone, we would position ourselves at N 41°23'7 W 071°52'6

Thanks again for sharing your observations.

Best CelNavian Regards

Kermit

Antoine M. "Kermit" Couëtte

----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------