Galaxies Astronomy Club

Hosted by Cstar1|Galaxies & More!

We keep our star talk down to earth! Beginning stargazers, professional astronomers, armchair astronauts and the cosmologically curious are all invited to join us. Galaxies Astronomy Club was founded in 1994.

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The Caird Astrolabe   General Discussion

Started Jun-26 by Cstar1; 225 views.
Cstar1
Host

From: Cstar1

Jun-26

In reply toRe: msg 1
Gary (GARY479)

From: Gary (GARY479)

Jun-26

Latitude has always been easy to figure but longitude was a bearcat. The English would play out ropes to gauge their distance and determine it but it was a sketchy affair at best.

Cstar1
Host

From: Cstar1

Jun-28

I really don't know how astrolabes work. Have you used one?

In reply toRe: msg 3
Gary (GARY479)

From: Gary (GARY479)

Jun-28

No, not in use in modern times with gyroscopes and gps. Basically you stand on the deck and sight the sun or a known star if at night and the machine will need to be aligned and then will give you your true latitudinal position on the tympan. I think this was portrayed on 'Master and Commander to the Far Side of the World' (Excellent movie btw) which also has the young Darwin on board doing his drawings.

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