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You orient the box N-S (N is engraved on the fixed horizontal ring).

 So the vertical ring is aligned with your meridian.
By rotating this ring, set your latitude. Then compute LHA Aries using your 
local time, longitude and GHA Aries from
the almanac. And set this by rotating the globe around its axis. (LHA Aries is 
marked on the globe equator,
it is graduated in hours not degrees!)

Now the globe is aligned with the sky at your location and local time.
Choose a star, and measure its azimuth and altitude using the cross-rings and 
the pointer attached to one of them.

For Sun, moon and planets, you use a special pencil or any easily erasable marker.
Put the location of the Sun, Moon or a planet on the globe with marker, using 
the time and almanac data (declination and the right ascension).
Right ascension is GHA-GHA Aries.

The globe is used for electing stars for observation and determination of 
their approximate altitudes and azimuths
before the observation. Its claimed accuracy is 1/2 degree. 
It permits you to identify your star and quickly find it by pre-setting your 
sextant. Especially useful when a star
appears in a gap in the clouds, so you do not see nearby stars and it is difficult to identify it.

Alex.

  
 rotate the vertical
 set your the lattitude 
________________________________________
From: NavList@fer3.com [NavList@fer3.com] on behalf of Markku Kalima [NoReply_Kalima@fer3.com]
Sent: Saturday, September 19, 2020 12:45 PM
To: eremenko@math.purdue.edu
Subject: [NavList] Russian celestial star globe

Hi there!

I bought this kind of star globe and now interested how to use it, and its 
history. I have no real world need for it but was more like an extra when 
buying my russian made sextant. They are both imported from Estonia to 
Finland some 20 years ago. Its quite nice object and it would be nice to know 
how to use it in star finding.

The star names in the globe are written in latin alphabets and the compass 
points in the arc around the globe are (N, W, S, O) where O (ost/east) refers 
to german language. This might be done to East German Markets?

Please tell me what you know about these globes. :)

File:
[http://fer3.com/arc/imgx/P9180720.JPG.thumb.jpg]
[http://fer3.com/arc/images/dl-icon.png]
File:
[http://fer3.com/arc/imgx/P9180719.JPG.thumb.jpg]
[http://fer3.com/arc/images/dl-icon.png]
File:
[http://fer3.com/arc/imgx/P9180722.JPG.thumb.jpg]
[http://fer3.com/arc/images/dl-icon.png]

   

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