, correctable for longitude and summer time
hours. They are meant for permanent installation so no do have levelling screws
or compass. There is no my knowledge any heliochronometer that will tell the
time better than 30 seconds accuracy, but I would love to be corrected on that!
Best regards
Kevin
(that is still
available) is a Gunning.
Despite the claims, I think the Pilkington Gibbs heliochronometer is only
accurate to 2 minutes, - it is only marked in 2 minute divisions and the cam is
probably worn after 100 years!
The PG Sol is marked to 1 minute and probably can (just) if you can find one
Greetings, fellow dialists,
Tom Kreyche wrote:
With my Wild Heerbrugg T3000 Digital Theodolite equiped with a
Roelofs Solar Prism I can achieve a few seconds accuracy for solar
observations by taking a great deal of care with the sophisticated
leveling system, assuming the base is stable, the
Dear Frank,
As ever, you prompt several interesting
trains of thought...
In fact any run-of-the-mill astro-navigator
with a merely passable sextant could at
least manage an accuracy of a minute of
arc...
I have never used a sextant but I have
heard this arc-minute figure so many
times I am
This man wrote to me wanting to order a particular type of heliochronometer. I
told him that I do not manufacture what he wants and that I would forward his
resquest to The Sundial List. Perhaps one of you can sell him what he wants.
See his description and photo below.
Thx
John
From
time
hours. They are meant for permanent installation so no do have levelling screws
or compass. There is no my knowledge any heliochronometer that will tell the
time better than 30 seconds accuracy, but I would love to be corrected on that!
Best regards
Kevin
On 23 May 2013, at 16:26, John
...@comcast.net
Cc: Sundial Mailing List sundial@uni-koeln.de
Sent: Thursday, May 23, 2013 9:33:46 AM
Subject: Re: Man Wants heliochronometer
That is an Aten Sundial made by J. D. Gard
http://atensundials.com
Sadly Mr Gard has died and I do not know if the business has been continued by
his wife
Good Afternoon
Always nice to know that David is still remembered for his beautiful
instrument. I had high hopes of continuing the building of the Aten
Heliochronometer after his death but as I am no machinist, I was unable to find
anyone to make the dial at a reasonable cost.
My sincere
I came across the attached on eBay
http://www.ebay.co.uk/itm/ws/eBayISAPI.dll?ViewItemitem=320976724417ssPageName=ADME:B:SS:GB:1123
anyone interested?
Kevin Karney
---
https://lists.uni-koeln.de/mailman/listinfo/sundial
Not antique! Im fairly certain it was made by J P Gunning, of Petersfield,
Hampshire (as on the dial with initials JPG). He may still be a member of the
British Sundial Society.
Otherwise a perfectly serviceable instrument.
Regards, Doug
On 5 Sep 2012, at 12:05, Kevin Karney wrote:
I came
@uni-koeln.de
Subject: RE: eBay : ANTIQUE HELIOCHRONOMETER BRONZE SUN DIAL SCIENTIFIC
INSTRUMENT
John Gunning of Petersfield is still a member of the BSS.
Best wishes,
Jackie Jones, BSS membership secretary
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de
: Heliochronometer card
dials?
Gerard,
You could make a sheperd's dial. These are
location specific.
Attached is a picture of the scale for such a
dial with correction for longitude and equation of time.
It would be better if you make two, one for the
morning hours and one
Sunny Day!
This isn't a card dial but it is made of paper and might just get you to
lunch on time. It could work for the application that Gerard Hughes spoke
about. It can be adjusted for latitude, longitude and the equation of time.
Unfortunately it will only work for half the year.
It is an
to applaud!
'Leisure' is a good word in this context as it took me best part of a
month to calculate all the tiny offsets and then convert them into
separatly rotated 'verniers' for each month for my Lindi/SOL
heliochronometer which is, as yet, only 80% completed after three years
in the making
Hi,
A while back Gerard Hughes started a thread on accurate card dials:
Ok,
so I do realize that "heliochronometer"
and "card dial" are sort of mutually exclusive. Im looking for a way to make
some easy to read card dials that read in standard mean time.
On
Ok, so I do realize that "heliochronometer"
and "card dial" are sort of mutually exclusive. I’m looking for a way to make
some easy to read card dials that read in standard mean time.
I work at a number of historical reenactment fairs and I’d love a quick
and portable wa
, October 17, 2006 8:36
PM
Subject: Heliochronometer card
dials?
Ok, so I do realize
that "heliochronometer" and "card dial" are sort of
mutually exclusive. I’m
looking for a way to make some easy to read card dials that read in standard
mean time.I work at a
To: Sundial List
Sent: Tuesday, October 17, 2006 7:36
PM
Subject: Heliochronometer card
dials?
Ok, so I do realize
that "heliochronometer" and "card dial" are sort of
mutually exclusive. I’m
looking for a way to make some easy to read card dials that read in
Chris
Lusby Taylor wrote on 10/17/06, 1:28 PM:
"Actually,
I thought "historical reenactment" and "standard mean time" are sort of
mutually exclusive."
Well, in the strict sense you are right, although there are historical
re-enactments that take place in time periods after time was
.
- Original Message -
From:
Gerard Hughes
To: Sundial List
Sent: Tuesday, October 17, 2006 4:58
PM
Subject: Re: Heliochronometer card
dials?
Chris Lusby Taylor wrote on 10/17/06, 1:28 PM:
"Actually, I thought "historical reenactment" and
On Tue, 17 Oct 2006, Fred Sawyer wrote:
The Icarus dial by Carlo Heller is a universal ring dial with adjusments for
longitude, dst, and equation of time.
I'm not familiar with that design, and couldn't (quickly) find a reference
to it, but what about something like this, cut from heavy
/deltacad.htm
John C.
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gerard Hughes
Sent: Tuesday, October 17, 2006
11:36 AM
To: Sundial List
Subject: Heliochronometer card
dials?
Ok, so I do realize that heliochronometer
and card dial are sort of mutually exclusive
un.htm
Roger Bailey
Walking Shadow
Designs
N 48.66 W 123.4
-Original Message-From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]On Behalf Of fer de
vriesSent: October 17, 2006 12:28 PMTo: Gerard Hughes;
Sundial ListSubject: Re: Heliochronometer card
dials?
Gerard,
You could m
The Icarus dial can be seen at:
http://www.heliosuhren.de/E_main_19_00.html
- Original Message -
From: Dave Bell [EMAIL PROTECTED]
To: Sundial List sundial@uni-koeln.de
Sent: Tuesday, October 17, 2006 5:35 PM
Subject: Re: Heliochronometer card dials?
On Tue, 17 Oct 2006, Fred
Hi Gerard,
I'd like the dial to read in mean time because initially I'd like to be
able to skip the explanation of Local Apparent Time vs. Mean Time and
such.
It's not qite chronometer accuracy, but feel free to use modify the time
scale in this card ring dial.
It was done in MS Word.
[EMAIL PROTECTED]
- Original Message -
From: Fred Sawyer [EMAIL PROTECTED]
To: Dave Bell [EMAIL PROTECTED]; Sundial List sundial@uni-koeln.de
Sent: Wednesday, October 18, 2006 10:35 AM
Subject: Re: Heliochronometer card dials?
The Icarus dial can be seen at:
http://www.heliosuhren.de
-koeln.de
Copies to: Subject:Heliochronometer card dials?
Ok, so I do realize that heliochronometer and card dial are sort of
mutually exclusive. I´m looking for a way to make some easy to read card
dials that read in standard mean time.
I work at a number of historical reenactment
Dave,
Pilkington and Gibbs certainly made a model of
their heliochronometer for the southern hemisphere.
I have a photo of one if you would like to see
it.
It's a Type 5, Serial number 598.
Mike Shaw
53.37 North03.02 West
www.wiz.to/sundials
Bill Gottesman wrote
The answer is yes. I think it was called Homan's Heliochronometer, and
was made in South Africa. ...
Althugh William Homan worked professionally in South Africa (and filed
patents from there) all the instruments by him that I've ever seen have
a Glasgow address. Bill, have
I think I did see photos of one from South Africa in an e-mail about 2 years ago from someone who wanted to know more about a sundial they had. It looked alot like a cross between a Pilkington and Gibbs Sol Horometer and their better known Heliochronometer as I recall. I could kick myself
Tony Moss of Lindisfarne Sundials sent me some photos of different models of Homan's sundials. I have placed them for viewing at www.precisionsundials.com/sundial_list.htm.
-Bill
The right url ishttp://www.precisionsundials.com/sundial_list.htmwithout point and 'clickable' Willy LeendersHasselt, Flanders (Belgium) Op 15-nov-05, om 18:54 heeft [EMAIL PROTECTED] het volgende geschreven:Tony Moss of Lindisfarne Sundials sent me some photos of different models of Homan's
Hi all:
I have a question for list members. Does anyone know if a Southern
hemisphere heliochronometer has ever been produced? I would think one must
have been, but can find no reference to any on the net.
Perhaps the Pilkington could be made to operate below the equator?
TIA
Dave G.
http
The answer is yes. I think it was called Homan's Heliochronometer, and was made in South Aftrica. Google was not that helpful.
-Bill Gottesman
In a message dated 11/14/2005 9:00:23 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
Hi all:
I have a question for list members. Does anyone know
details.
Simon
--- [EMAIL PROTECTED] wrote:
The answer is yes. I think it was called Homan's
Heliochronometer, and was
made in South Aftrica. Google was not that helpful.
-Bill Gottesman
In a message dated 11/14/2005 9:00:23 PM Eastern
Standard Time,
[EMAIL PROTECTED] writes:
Hi
I have recently been shown an interesting brass heliochronometer made by W.
Homan of Glasgow according to his patent 18,568 of 1911. (I hope to receive
a copy of the patent shortly.)
It is quite large, based on a 13 1/2 diameter hemisphere. It has two
gnomons, upright brackets carried
wrote:
I have recently been shown an interesting brass heliochronometer made by W.
Homan of Glasgow according to his patent 18,568 of 1911. (I hope to receive
a copy of the patent shortly.)
It is quite large, based on a 13 1/2 diameter hemisphere. It has two
gnomons, upright brackets carried
]
To: sundial@rrz.uni-koeln.de
Sent: Wednesday, July 31, 2002 7:33 AM
Subject: Heliochronometer by Homan
I have recently been shown an interesting brass heliochronometer made by
W.
Homan of Glasgow according to his patent 18,568 of 1911. (I hope to
receive
a copy of the patent shortly.)
It is quite
Subject: Heliochronometer by Homan
I have recently been shown an interesting brass heliochronometer made by
W.
Homan of Glasgow according to his patent 18,568 of 1911. (I hope to
receive
a copy of the patent shortly.)
It is quite large, based on a 13 1/2 diameter hemisphere. It has two
!
Andrew James
N 51 04' W 01 18'
-Original Message-
From: Brooke Clarke [mailto:[EMAIL PROTECTED]
Sent: 31 July 2002 17:03
To: sundial@rrz.uni-koeln.de
Subject: Re: Heliochronometer by Homan
All US patents are on line.
Sources for free on line TIF viewers can be found under help\How
: Heliochronometer by Homan
All US patents are on line.
Sources for free on line TIF viewers can be found under help\How to Access
Patent Full-page Images.
Older patents can only be accessed by traditional US class number or patent
number, none of the other search methods will work.
-
-
Hi Bob et al,
heliochronometer is indeed listed in the BSS Glossary, under the Dial types
category. The definition given is:
a precision sundial which incorporates some means to allow it to read civil
(or mean) time. This is usually achieved by incorporating an EoT cam
: heliochronometer
Hi Peter,
I went to the Sky web page and to the Dec. 94 archives.
These must be the articles:
36. Telescope Making - A Precision Sundial of Bronze
By Charles F. Avila | December 1994, p. 88
Order Original Issue
37. Telescope Making - Just How Accurate Can a Sundial Be?
By Roger W
There is an article in Sky Telescope magazine December 1994 that
inspired the heliochronometers I made.
Peter
--
Peter Hirtle [EMAIL PROTECTED] Seattle, WA.
-
Hi Peter,
I went to the Sky web page and to the Dec. 94 archives.
These must be the articles:
36. Telescope Making - A Precision Sundial of Bronze
By Charles F. Avila | December 1994, p. 88
Order Original Issue
37. Telescope Making - Just How Accurate Can a Sundial Be?
By
Stumpges
Sent: March 6, 2002 2:05 PM
To: 'sundial@rrz.uni-koeln.de'
Subject: RE: heliochronometer
Hi Peter,
I went to the Sky web page and to the Dec. 94 archives.
These must be the articles:
36. Telescope Making - A Precision Sundial of Bronze
By Charles F. Avila | December 1994, p. 88
Hello all,
With Robert Terwilliger's and Robert Kellog's
patient help, I've updated all known sundials in Arizona on the NASS registry.
Included are several fine photos and a lengthly description of my Flandrau
Planetarium Heliochronometer.
Go to: http://www.sundials.org/registry
monofilar heliochronometer with many many different functions. After much
testing, we are consistantly achieving 10 seconds time reading
precision!!!
Hope you like it, I can't wait to hear your
comments!
Flandrau Planetearium has posted it on their
website at: http://w3.arizona.edu/~flandra
Pilkington and Gibbs Heliochronometers.
Yes, I am making a replica of the P G
Heliochronometer. In fact I have been making it for about four years or
more ! The trouble is that I have done all the easy bits, have been
in and out of hospital a few times since I began and am rather stuck
Tom Mchugh wrote:
My guess is the the most accurate sort of heliochronometer
would have optical means of focusing a solar image on an
analemma (figure 8), and would have optical means of observing
the sun's image to judge when it is centered on the line.
Time could be conveniently shown
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