A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2018 Dec 15, 15:00 -0800
I’m currently using Anti Spoof Pro around 12.00 local time (effectively UTC in my case at 000.32W) to calibrate my Hughes MkIX series sextants v the Sun. At 53N in December this allows me to calibrate on the 10 degree stop only. My question is to do with the display. When observing the Sun around , a few seconds timing error isn’t going to make much difference to the calibration of a bubble sextant accurate to 1-3 minutes of arc. However, to calibrate on the other stops, I’m soon going to have to observe stars (if I can see any though the light pollution and 70 years of grot) moving fast enough for exact time to matter.
It seems that the time indicated in the display is always UTC, and ties in with my radio controlled clock, irrespective of how many seconds are set in the 'delay' function. However, when paused, the ‘Paused’ window gives the actual UTC time ‘Pause’ was selected, but also reminds me to subtract however many seconds is set in the delay function. Therefore, just to check, does this mean that with 10 seconds delay selected for example, the Hc and Azimuth displayed is always what it was 10 seconds previously? I.e when actual UTC time displayed is 12.00, the Hc and Az displayed are for for .
Also, which time source is used to display time in Anti Spoof Pro? Is it GPS time or smart phone time?
Finally, is it possible to bring up ‘Notes’ on the display? I’ve not been able to find any. DaveP