Re: Astrolabes

[illustratingshad...@gmail.com]

I have two commercial planispheric astrolabes. The Norman Greene one in the 
puzzler link below looks as if it might not be accurate, however it is easy to 
read in full sun. Another I have is clearly more accurate but in full sun 
rather hard to read.
Mr Morrison's work is definitive, excellent.
My DeltaCAD macro for astrolabes (planispheric) will let you check designs. I 
only address the sun, not other heavenly bodies. My main spreadsheet also 
provides planispheric astrolabe design data. I also wrote an idiot's guide to 
designing them.
www.illustratingshadows.com
and all that stuff is free.
Simon


Sent from Yahoo Mail on Android 
 
  On Thu, Dec 22, 2016 at 6:09, Patrick Vyvyan wrote:  
 First post here, so I don't know if I'm doing it right!

Here are a couple of links to reproduction astrolabes, but I have no idea as to 
their precision:

http://www.puzzlering.net/astrolabe.html

http://www.astrolabeshop.com/us/astrolabes-page1.htm

Some people with considerably more skill than me have made their own, and the 
level of accuracy looks very superior. That said, some have taken hundreds of 
hours of work! Have a look at the site of the late James E. Morrison for some 
fascinating examples:

http://www.astrolabes.org/pages/individual.htm

Best wishes and season's greetings to all!

Patrick



Patrick Vyvyan
Presidente
Corporación Cultural de Putaendo


On 22 December 2016 at 09:24, Dan-George Uza  wrote:

Dear group,
While visiting the Barcelona CosmoCaixa this spring I saw a wonderful looking 
astrolabe on display in the science museum gift shop. 
It is the one listed below:
http://www.antiquus.es/p-172/ Orientacion-y-Medida/ Astrolabio/Astrolabio- 
Arsenius-20-(dos-latitudes)
This brass plated astrolabe measures 20 cm / almost 8" and it comes with two 
base plates for two different latitudes (41 and 45 degrees). 
I was very tempted to buy it but after doing some research back home I found 
that there are some inaccuracies in the rete and alidade design. They are 
pointed out in the link below (in Spanish). 
http://www.oagarraf.net/ Comunicacions/ASTROLABI/INDEX% 20ASTROLABI.html  
Can you sugest other working astrolabes in this price range?

Dan Uza
-- -
https://lists.uni-koeln.de/ mailman/listinfo/sundial




  
---
https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Astrolabes

[Patrick Vyvyan]

First post here, so I don't know if I'm doing it right!

Here are a couple of links to reproduction astrolabes, but I have no idea
as to their precision:

http://www.puzzlering.net/astrolabe.html

http://www.astrolabeshop.com/us/astrolabes-page1.htm

Some people with considerably more skill than me have made their own, and
the level of accuracy looks very superior. That said, some have taken
hundreds of hours of work! Have a look at the site of the late James E.
Morrison for some fascinating examples:

http://www.astrolabes.org/pages/individual.htm

Best wishes and season's greetings to all!

Patrick




*Patrick Vyvyan*

*Presidente*


*Corporación Cultural de Putaendo*

On 22 December 2016 at 09:24, Dan-George Uza 
wrote:

> Dear group,
>
> While visiting the Barcelona CosmoCaixa this spring I saw a wonderful
> looking astrolabe on display in the science museum gift shop.
>
> It is the one listed below:
>
> http://www.antiquus.es/p-172/Orientacion-y-Medida/Astrolabio/Astrolabio-
> Arsenius-20-(dos-latitudes)
>
> This brass plated astrolabe measures 20 cm / almost 8" and it comes with
> two base plates for two different latitudes (41 and 45 degrees).
>
> I was very tempted to buy it but after doing some research back home I
> found that there are some inaccuracies in the rete and alidade design. They
> are pointed out in the link below (in Spanish).
>
> http://www.oagarraf.net/Comunicacions/ASTROLABI/INDEX%20ASTROLABI.html
>
> Can you sugest other working astrolabes in this price range?
>
>
> Dan Uza
>
> ---
> https://lists.uni-koeln.de/mailman/listinfo/sundial
>
>
>
---
https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Astrolabes

[Edley]

Dear Membership,

Thanks for all the listings on Astrolabes!  This is an area I'd 
neglected in my studies.  I'm finding the information very 
interesting and have started to build  a 6 inch one for my area. ( 
For the summer months when it isn't raining nearly every day. )
I'm also interested in early navigational methods and this fits right 
in.

I'm also designing the prototype of the Cycloid Polar Book Dial.  
I'm planning on doing it in Ceramic, but am very concerned about the 
accuracy of the cycloid curve and shrinking/distortion in curing.  I 
think I'll make the two halves of the book separate so I can fit in 
the linear scale and test the surfaces before I add the markings and 
final glaze.  If anyone has any hints/experiences here, I would be 
happy to hear them.

Edley McKnight,

[43.126N 123.327W]   OK, so I move around some  :-)

Re: Astrolabes?

[Thierry van Steenberghe]

The shop of the ROG museum in Greenwich used to sell a cardboard/paper
astrolabe model...
If you can't go there, have a look at http://www.rog.nmm.ac.uk/

Thierry vs

Kevin Conod wrote:


 I'm looking for brass repleca astrolabes for an exhibit. I've got Norman
 Green's web site, but are there any other good sources for these?

 I'm also interested in paper and carboard replicas as well for
 workshops, etc. Please e-mail me if you have any details.

 --
 --Kevin Conod
   [EMAIL PROTECTED]

RE: Astrolabes?

[The Shaws]

Jim Morrison's personalised laminated card astrolabe is excellent, with a
great instruction book see:-
http://www.astrolabes.org/

You can also download an electronic version which shows the position of the
planets
Have a look.

Mike Shaw

http://homepage.ntlworld.com/jmikeshaw/

N 53º 21' 24
W 03º 01' 47
Wirral, UK.

RE: Astrolabes?

[Steve Turley]

http://www.ifa.hawaii.edu/tops/astlabe.html has a do-it-yourself
astrolabe you print and assemble.

-Original Message-
From: Kevin Conod [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, November 27, 2001 3:59 PM
To: sundial@rrz.uni-koeln.de
Subject: Astrolabes?


I'm looking for brass repleca astrolabes for an exhibit. I've got Norman
Green's web site, but are there any other good sources for these?

I'm also interested in paper and carboard replicas as well for
workshops, etc. Please e-mail me if you have any details.

-- 
--Kevin Conod
  [EMAIL PROTECTED]

Re: Astrolabes?

[Keith E. Brandt, M.D.]

I'm looking for brass repleca astrolabes for an exhibit. I've got Norman
Green's web site, but are there any other good sources for these?

I'm also interested in paper and carboard replicas as well for
workshops, etc. Please e-mail me if you have any details.

--
--Kevin Conod
  [EMAIL PROTECTED]



The best site I know of for astrolabe information is 
http://www.astrolabes.org/ He sells an inexpensive working paper astrolabe 
which I've used quite successfully.


Another working astrolabe model that looks more like a period brass model 
with modern positions and thus quite functional can be found at 
http://www.celestaire.com/catalog/Historical_Interest/ They have a 
planispheric and mariner's astrolabe kits (cardboard) as well as a 
nocturnal, sundial, and perpetual calendar set.


Brass astrolabes are quite expensive. Sites that I've come across are 
http://www.saundersandcooke.com/ 
http://renaissance-faire.com/shop/Timeless-Instruments.htm 
http://www.astrolabe.ch/start.htm They seem to be largely showpieces, but 
the ones that are usable are the ones that have the large price tag.


Ad astra,
Keith

==
LtCol Keith E Brandt,MD,MPH || Goodbye cruel world that was my home-
Chief of Aerospace Medicine ||  there's cleaner space out here to roam
McConnell AFB, Wichita, KS  || Put my feet up on the moons of Mars-
[EMAIL PROTECTED]||  sit back, relax, and count the stars
http://www.dca.net/~brandt  ||
==
*This message transmitted with 100% recycled electrons

Re: Astrolabes Bibliography

[Giovanni BARBI]

Víctor Pérez Villar wrote:

 Does Anybody Know Something About Astrolabes? , I mean some kind of  books
 or bibliography.
 I am interested in how they are built, mainly their mathematical steps like
 Projection of Planes on the Ecuador, Horizon, etc...
 Víctor Pérez Villar

L'Association Francaise de topogrphie has just printed the fallowing book:
Raymond d'Hollader
L'ASTROLABE

I have bought it and I think it is very interesting ( pheraps to much
mathematical, if one does not like mathematics)

For your commodity, I attach the coupon for order

Giovanni Barbi

[EMAIL PROTECTED]


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Re: Astrolabes Bibliography

[Michael Grey]

Victor,

'ALL THE ASTROLABES' by Harold N. Saunders 1984
Senecio Publishing Company Limited, Oxford Englans 

I was able to get a copy thru interlibrary loan in the US.

At 10:25 AM 3/30/99 +0200, Víctor Pérez VillarpbGxhcg== wrote:
Does Anybody Know Something About Astrolabes? , I mean some kind of  books
or bibliography.
I am interested in how they are built, mainly their mathematical steps like
Projection of Planes on the Ecuador, Horizon, etc...
Víctor Pérez Villar


--
Michael Grey
Grad Student
Dept. of Wildlife and Fisheries
Texas AM University
[EMAIL PROTECTED]

Re: astrolabes

[Keith Manison]

On Tue, 28 Apr 1998, Dave Bell wrote:

 On Tue, 28 Apr 1998, RJS Crossley wrote:
 
  Tarquin Publications of Stradbroke, Diss IP21 5JP, England,
 
 Haven't found anything by them on Astrolabes, though.
 
 Dave

I got the Sundial book and an Astrolabe kit at the Old Royal 
Observatory at Greenwich. Apart from the fact that the designs in the 
book don't go below 30 deg latitude, and I'm ant 18 deg, it's excellent. 
I've built most of them, modified as best as possible for my latitude.

The Make-it-yourself Astrolabe seems to be published by the National 
Maritime Museum. The label says it cost UKP 2.50. I also got a carboard 
Nocturnal kit too while there. 

Cheers

Keith


Keith Manison   Phone (876)927-2148
Director, Information Systems Unit  Fax   (876)927-0997
University of the West Indies   Email [EMAIL PROTECTED]
Mona, Kingston 7, Jamaica W.I.   

Re: astrolabes

[Luke Coletti]

Perhaps the book that is being thought of is The Astrolabe, Some
Notes on its History, Construction  Use by R.S. Webster, Lake Bluff, 1974.
It contains a card model of an Astolabe. I got a copy from Rogers Turner
Books, Greenwich London.

Luke


Dave Bell wrote:

 On Tue, 28 Apr 1998, RJS Crossley wrote:

Tarquin Publications of Stradbroke, Diss IP21 5JP, England,
  publish a splendid cut-out book of Sundials and Timedials, by Gerald
  Jenkins and Magdalen Bear (ISBN 0 906212 59 6) - very cheap! I believe
  the same publisher offers an Astrolabe in the same format.

Richard Crossley.
  Dept. of Physics, University of York, York YO1 5DD, England.

 Cheap, indeed!  $8.71 at www.books.com  and appears to be in stock!

 Also by Jenkins/Tarquin, an entire series  of cut-out and model books for
 mathematical and astronomical education, all cheap...

 Haven't found anything by them on Astrolabes, though.

 Dave

Re: astrolabes

[RJS Crossley]

Tarquin Publications of Stradbroke, Diss IP21 5JP, England,
publish a splendid cut-out book of Sundials and Timedials, by Gerald
Jenkins and Magdalen Bear (ISBN 0 906212 59 6) - very cheap! I believe
the same publisher offers an Astrolabe in the same format.
At the other extreme is Humphrey Cole's astrolabe (and other
mathematical instruments) which I had the good fortune to see on Saturday
in a special exhibition at the British Museum (room 69a).
Richard Crossley.
Dept. of Physics, University of York, York YO1 5DD, England.

Re: Astrolabes

[bartman]

les:

I have designed two Astrolabes and am particular to them over sundials.
The best reference I am aware of is called 
ALL the Astrolabes
by Harold Saunders

It it is out of print But I manages a almost completely xeroxed copy. 
Otherwise, Many back isues of astronomy magazines show methods of
construction.
Lastly find a copy of Geoffey Chaucers Treatise on the Astrolabe
If it suits anyone, I have some lovely drawings created in AutoCAD for the
designs of my astrolabes.


--
From: Les Cowley [EMAIL PROTECTED]
To: sundial@rrz.Uni-Koeln.DE
Subject: Astrolabes
Date: Sunday, August 25, 1996 9:30 AM

I am looking for a book or references on the mathematics and design 
of astrolabes.

Re: Astrolabes

[Fer J. de Vries]

Les Cowley wrote:
 
 I am looking for a book or references on the mathematics and design
 of astrolabes.
 
 Apologies if this is a little off topic, but since the maths is not
 too dissimilar from that of sundials it is likely that some list
 members will be astrolabe designers too and I would appreciate any
 recommendations.
 
 Thanks
 
 Les Cowley
 [EMAIL PROTECTED]
 08/25/96 - 14:30:48 GMT+1

Les,

Some books about astrolabes. I don't know if they are still available.

All the astrolabes by Harold N. Saunders, 1984. ISBN 0 906831 040 

Traite de l`astrolabe by Henri Michel, 1976. First edition published in 
1947, in 1976 a limited reprint. It is French.

Astrolabes of the world by Robert T Gunther. (A large book)
First published 1932. Reprint 1976.

Das astrolabium und die Uhr by Johann Hugin, 1978, German.
ISBN 3 921348 23 4

Articles in the bulletin of De Zonnewijzerkring (the Dutch Sundial 
Society) in dutch.

It is about 15 years ago I started with some study of the astrolabes and 
it is very interesting. I made a computerprogram to draw the tympans for 
several latitudes but it is more pleasant to study the maths first.
 

Fer J. de Vries, Netherlands.