Discussion:
Timing for Pendulum Astrolabe?
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Brooke Clarke
2018-12-01 01:38:12 UTC
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Hi:

I'm learning about the 60-Degree Pendulum Astrolabe:
https://prc68.com/I/PendulumAstrolabe.shtml
The idea is to mark the time when a known star crosses the 60 degree elevation circle.

Is there an Android app where I could just push a button and have the local mean sidereal time recorded?  Lacking LMST
is there an app for any other time scale?
--
Have Fun,

Brooke Clarke
https://www.PRC68.com
https://www.end2partygovernment.com/2012Issues.html
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.


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Gregory Beat via time-nuts
2018-12-01 13:33:00 UTC
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Is David White still in business?
YES. David White’s SitePro is now based in Lafayette, IN (near Purdue University).
http://www.dwsitepro.com/

The David White name is known for high-quality surveying equipment and optical instruments. The David White Company was founded in Milwaukee, Wisconsin, in the year 1895 by Mr. David White. The founder was born in Hungary and his occupation was that of an instrument maker. After immigrating to the United States he started the company with the help of established relatives in the Milwaukee area.
In 1900, he organized a partnership with Charles Klaweither, as they were both involved with manufacturing drawing and surveying instruments. The company was incorporated on June 22, 1912 and it's products became widely recognized for craftsmanship in specialized optics along with the name for high quality.

How old is this David Clarke Astrolabe?
Most likely the last number (on mfg. plate) is the internal mfg. serial number,
which would suggest a 1945 manufacturing date.
http://www.surveyhistory.org/how_old_is_my_david_white.htm

greg
chicago
==
Date: Fri, 30 Nov 2018 17:38:12 -0800
From: Brooke Clarke <***@pacific.net>
To: Discussion of precise time and frequency measurement
<time-***@lists.febo.com>
Subject: [time-nuts] Timing for Pendulum Astrolabe?

Hi:
I'm learning about the 60-Degree Pendulum Astrolabe:
https://prc68.com/I/PendulumAstrolabe.shtml
The idea is to mark the time when a known star crosses the 60 degree elevation circle.

Is there an Android app where I could just push a button and have the local mean sidereal time recorded?? Lacking LMST is there an app for any other time scale?

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Dana Whitlow
2018-12-01 14:08:13 UTC
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I recall seeing an Android app several years ago which could at least
display LMST, but I could never use it. It would only accept position via
the built-in GPS, not by manual entry as an alternative. My cheap
mini-tablet's GPS receiver was so insensitive that it was virtually
unusable. Curiously, last summer it came to life and worked well
for about half an hour, then quit again. Go figure...

Dana


On Sat, Dec 1, 2018 at 7:34 AM Gregory Beat via time-nuts <
Post by Gregory Beat via time-nuts
Is David White still in business?
YES. David White’s SitePro is now based in Lafayette, IN (near Purdue University).
http://www.dwsitepro.com/
The David White name is known for high-quality surveying equipment and
optical instruments. The David White Company was founded in Milwaukee,
Wisconsin, in the year 1895 by Mr. David White. The founder was born in
Hungary and his occupation was that of an instrument maker. After
immigrating to the United States he started the company with the help of
established relatives in the Milwaukee area.
In 1900, he organized a partnership with Charles Klaweither, as they were
both involved with manufacturing drawing and surveying instruments. The
company was incorporated on June 22, 1912 and it's products became widely
recognized for craftsmanship in specialized optics along with the name for
high quality.
How old is this David Clarke Astrolabe?
Most likely the last number (on mfg. plate) is the internal mfg. serial number,
which would suggest a 1945 manufacturing date.
http://www.surveyhistory.org/how_old_is_my_david_white.htm
greg
chicago
==
Date: Fri, 30 Nov 2018 17:38:12 -0800
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Timing for Pendulum Astrolabe?
https://prc68.com/I/PendulumAstrolabe.shtml
The idea is to mark the time when a known star crosses the 60 degree elevation circle.
Is there an Android app where I could just push a button and have the
local mean sidereal time recorded?? Lacking LMST is there an app for any
other time scale?
_______________________________________________
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
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and follow th
Jim Harman
2018-12-01 14:24:44 UTC
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Post by Brooke Clarke
Is there an Android app where I could just push a button and have the
local mean sidereal time recorded? Lacking LMST
is there an app for any other time scale?
Take a look at AdvSunMoon, which will capture LMST when you hit the Now
button. It will either use the current GPS location or you can point to a
spot on a map and it will use that location.

There is also Starstruck Navigation, which is a more complete celestial
navigation app.
Post by Brooke Clarke
I recall seeing an Android app several years ago which could at least
display LMST, but I could never use it. It would only accept position via
the built-in GPS, not by manual entry as an alternative. My cheap
mini-tablet's GPS receiver was so insensitive that it was virtually
unusable. Curiously, last summer it came to life and worked well
for about half an hour, then quit again. Go figure...
Dana
On Sat, Dec 1, 2018 at 7:34 AM Gregory Beat via time-nuts <
Post by Gregory Beat via time-nuts
Is David White still in business?
YES. David White’s SitePro is now based in Lafayette, IN (near Purdue University).
http://www.dwsitepro.com/
The David White name is known for high-quality surveying equipment and
optical instruments. The David White Company was founded in Milwaukee,
Wisconsin, in the year 1895 by Mr. David White. The founder was born in
Hungary and his occupation was that of an instrument maker. After
immigrating to the United States he started the company with the help of
established relatives in the Milwaukee area.
In 1900, he organized a partnership with Charles Klaweither, as they were
both involved with manufacturing drawing and surveying instruments. The
company was incorporated on June 22, 1912 and it's products became widely
recognized for craftsmanship in specialized optics along with the name
for
Post by Gregory Beat via time-nuts
high quality.
How old is this David Clarke Astrolabe?
Most likely the last number (on mfg. plate) is the internal mfg. serial number,
which would suggest a 1945 manufacturing date.
http://www.surveyhistory.org/how_old_is_my_david_white.htm
greg
chicago
==
Date: Fri, 30 Nov 2018 17:38:12 -0800
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Timing for Pendulum Astrolabe?
https://prc68.com/I/PendulumAstrolabe.shtml
The idea is to mark the time when a known star crosses the 60 degree elevation circle.
Is there an Android app where I could just push a button and have the
local mean sidereal time recorded?? Lacking LMST is there an app for any
other time scale?
_______________________________________________
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
--
--Jim Harman
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Brooke Clarke
2018-12-03 18:45:58 UTC
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Hi Dana:

I converted a stock 24 hour wall clock to sidereal time using a "Crazy Clocks" module:
https://www.tindie.com/products/nsayer/crazy-clock/
http://prc68.com/I/QuartzClk.shtml#Sidereal
I gave it to the local latitude observatory
https://www.prc68.com/I/UkiahObs.shtml
and used the LMST app on my Android phone to set it.
--
Have Fun,

Brooke Clarke
https://www.PRC68.com
https://www.end2partygovernment.com/2012Issues.html
axioms:
1. The extent to which you can fix or improve something will be limited by how well you understand how it works.
2. Everybody, with no exceptions, holds false beliefs.

-------- Original Message --------
Post by Dana Whitlow
I recall seeing an Android app several years ago which could at least
display LMST, but I could never use it. It would only accept position via
the built-in GPS, not by manual entry as an alternative. My cheap
mini-tablet's GPS receiver was so insensitive that it was virtually
unusable. Curiously, last summer it came to life and worked well
for about half an hour, then quit again. Go figure...
Dana
On Sat, Dec 1, 2018 at 7:34 AM Gregory Beat via time-nuts <
Post by Gregory Beat via time-nuts
Is David White still in business?
YES. David White’s SitePro is now based in Lafayette, IN (near Purdue University).
http://www.dwsitepro.com/
The David White name is known for high-quality surveying equipment and
optical instruments. The David White Company was founded in Milwaukee,
Wisconsin, in the year 1895 by Mr. David White. The founder was born in
Hungary and his occupation was that of an instrument maker. After
immigrating to the United States he started the company with the help of
established relatives in the Milwaukee area.
In 1900, he organized a partnership with Charles Klaweither, as they were
both involved with manufacturing drawing and surveying instruments. The
company was incorporated on June 22, 1912 and it's products became widely
recognized for craftsmanship in specialized optics along with the name for
high quality.
How old is this David Clarke Astrolabe?
Most likely the last number (on mfg. plate) is the internal mfg. serial number,
which would suggest a 1945 manufacturing date.
http://www.surveyhistory.org/how_old_is_my_david_white.htm
greg
chicago
==
Date: Fri, 30 Nov 2018 17:38:12 -0800
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Timing for Pendulum Astrolabe?
https://prc68.com/I/PendulumAstrolabe.shtml
The idea is to mark the time when a known star crosses the 60 degree elevation circle.
Is there an Android app where I could just push a button and have the
local mean sidereal time recorded?? Lacking LMST is there an app for any
other time scale?
_______________________________________________
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-***@lists.febo.com
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and follow the instructions ther
jimlux
2018-12-04 04:09:07 UTC
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Permalink
Post by Brooke Clarke
https://www.tindie.com/products/nsayer/crazy-clock/
http://prc68.com/I/QuartzClk.shtml#Sidereal
I gave it to the local latitude observatory
https://www.prc68.com/I/UkiahObs.shtml
and used the LMST app on my Android phone to set it.
The equivalent time-nuts way is to use your cesium reference to drive a
3325B to generate the pulses at the right rate.


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