A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brad Morris
Date: 2016 Apr 30, 10:44 -0400
I came across an image of sextant use on the Graf Zeppelin in 1929!
At 48 minutes and 38 seconds, we see the navigator (?) holding his sextant, whilst taking an observation, purportedly over Siberia.
The image is attached. I note the large box-like structure by where the horizon mirror should be. Is that an artificial horizon?!?
Francis Upchurch wrote: In Chichester's 4 wartime cel nav teaching books, there is no mention of a box sextant, but book 4 has a page on an "Airship sextant" , which looks just like a good marine sextant with micrometer.
Francis. It’s interesting that that you’ve got Part 4 of the Observer’s Books. I’ve only got Parts 1, 2, and 3 (Issued to or bought by Plt Off Whapham at 2s 6p each). Mine only advertise three parts on the covers. Could you possibly photograph the pages in part 4 on airship navigation? Two interesting points I notice. I always thought Observer’s books were ‘of’ e.g. ‘The Observer's Book of Trees’, but these are books ‘on’. This is grammatically quite correct of course and a sign of more formal times. Also, it seems I’m not the only user of ‘Astro’ instead of ‘Celestial’; the great man did so too. DaveP