A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David C
Date: 2017 Jan 5, 02:03 -0800
Tonight there is absolutely no wind and the skies are clear. I had not planned to take any sights but made a late decision to attempt sights of Sirius and Canopus with the glass removed from the AH. When I went outside I saw Venus in all it glory but what really drew my attention was the moon. It is its first quarter and the limb was facing venus. A Lunar!
I managed to take three sights before Venus was too low in the AH.
I know that there are many threads here about lunars and that there are many methods of solving lunars. I have glanced through some of the threads but made no attempt to understand the methods. I will post the sights here and ask that a lunerian (when they have some spare time) look at the data and see if it makes sense. If the observations are sensible then please direct me to a reduction method. Note that I prefer to do it the 19th century way although I suppose plugging the numbers into a computer program is a quick way of checking the sights.
I am assuming that moon and venus altitudes and the moon venus distance are what is required.
In the space of an hour I went from believing that I would never do a lunar to realising that one day I may proudly call myself a Lunerian (-;
I will also work the Venus and Moon sights as intercepts. These are the first moon sights I have taken.
Here is the data.
IE 0.5 off the arc
Moon bodies superimposed.
Venus and Moon altitudes are as observed in the AH.
Moon - Venus was to limb of moon.
As discussed in another thread all times are recorded in UTC. I noted times for all observations but will not give them as I understand that the purpose of the lunar is to determine time (-; However I can provide times if required.
Date 5th Jan 2017
Taken about 0823
Moon - Venus 36° 29.5'
Venus 41°40' 40"
Moon 69° 11'
Taken about 0838
Moon - Venus 36° 32.5'
Venus 35° 15'
Moon 66° 31' 10"
Taken about 0848
Moon - Venus 36° 43' 10"
Venus 33° 50'
Moon 63° 17'
Looking forward to the results with much anticipation. Thanks.