• constructing an Astrolabe?

    From Nikolai Petrovich@21:1/5 to All on Sat Dec 1 07:16:54 2018
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / constructing one of a particular latitude?

    in service

    Nikolai Petrovich

    --
    Nikolai Petrovich Flandropoff
    Whimiscal Order of the Ailing Wit
    Scribe & Zampollet to Clan MacFlandry
    Loose Canon, An Tir Heavy Opera Company
    Semi-offical TASS correspondent (That makes me - the Demi-Tass)

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  • From Dorothy J Heydt@21:1/5 to phamp@mindspring.com on Sat Dec 1 15:53:20 2018
    In article <h5950elp5oumcuivv90jmrtel5lk2gkt9j@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating /
    constructing one of a particular latitude?

    I just googled "astrolabe calibration" and got many sites. I
    glanced at a few and realized I don't have the math for this.
    But then, I don't have the math for high-school algebra any more.
    This is a very low bar.

    I suggest you also google "astrolabe calibration" and search
    through the sites, and _Deo volente,_ you'll find what you need.
    Good luck.

    --
    Dorothea of Caer-Myrddin Dorothy J. Heydt Vinhold/Mists/West Vallejo, California
    PRO DEO ET REGE djheydt at gmail dot com www.kithrup.com/~djheydt/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Nikolai Petrovich@21:1/5 to All on Sat Dec 1 11:14:54 2018
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 15:53:20 GMT
    typed in rec.org.sca the following:
    In article <h5950elp5oumcuivv90jmrtel5lk2gkt9j@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / >>constructing one of a particular latitude?

    I just googled "astrolabe calibration" and got many sites. I
    glanced at a few and realized I don't have the math for this.
    But then, I don't have the math for high-school algebra any more.
    This is a very low bar.

    I suggest you also google "astrolabe calibration" and search
    through the sites, and _Deo volente,_ you'll find what you need.
    Good luck.

    That is the next step.

    Or find my copy of Geoffrey Chaucer's Treatise on the Astrolabe.

    tschus
    nikolai

    --
    Nikolai Petrovich Flandropoff
    Whimiscal Order of the Ailing Wit
    Scribe & Zampollet to Clan MacFlandry
    Loose Canon, An Tir Heavy Opera Company
    Semi-offical TASS correspondent (That makes me - the Demi-Tass)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Dorothy J Heydt@21:1/5 to phamp@mindspring.com on Sat Dec 1 20:27:14 2018
    In article <1an50e93qfbtd2aog5b2hi0m9n9iposjtn@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 15:53:20 GMT
    typed in rec.org.sca the following:
    In article <h5950elp5oumcuivv90jmrtel5lk2gkt9j@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / >>>constructing one of a particular latitude?

    I just googled "astrolabe calibration" and got many sites. I
    glanced at a few and realized I don't have the math for this.
    But then, I don't have the math for high-school algebra any more.
    This is a very low bar.

    I suggest you also google "astrolabe calibration" and search
    through the sites, and _Deo volente,_ you'll find what you need.
    Good luck.

    That is the next step.

    Or find my copy of Geoffrey Chaucer's Treatise on the Astrolabe.

    Well, my copy of that is with my Collected Works of, and it's in
    Middle English. :) And it'll be either (a) calculated for a
    London or thereabouts latitude, or (b) doesn't mention the
    latitude of the observer at all. But the Internet can be your
    friend.

    --
    Dorothea of Caer-Myrddin Dorothy J. Heydt Vinhold/Mists/West Vallejo, California
    PRO DEO ET REGE djheydt at gmail dot com www.kithrup.com/~djheydt/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Nikolai Petrovich@21:1/5 to All on Sat Dec 1 17:19:11 2018
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 20:27:14 GMT
    typed in rec.org.sca the following:
    In article <1an50e93qfbtd2aog5b2hi0m9n9iposjtn@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 15:53:20 GMT
    typed in rec.org.sca the following:
    In article <h5950elp5oumcuivv90jmrtel5lk2gkt9j@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / >>>>constructing one of a particular latitude?

    I just googled "astrolabe calibration" and got many sites. I
    glanced at a few and realized I don't have the math for this.
    But then, I don't have the math for high-school algebra any more.
    This is a very low bar.

    I suggest you also google "astrolabe calibration" and search
    through the sites, and _Deo volente,_ you'll find what you need.
    Good luck.

    That is the next step.

    Or find my copy of Geoffrey Chaucer's Treatise on the Astrolabe.

    Well, my copy of that is with my Collected Works of, and it's in
    Middle English. :) And it'll be either (a) calculated for a
    London or thereabouts latitude, or (b) doesn't mention the
    latitude of the observer at all. But the Internet can be your
    friend.

    And sometimes, it can be that friend who has all sorts of answers,
    some of which are relevant to your question.

    But' I've found a translation into modern English, and an article
    about using Power Point to make the templates. Which has the
    formulas. Weeeee!

    tschus
    Nicolai
    --
    Nikolai Petrovich Flandropoff
    Whimiscal Order of the Ailing Wit
    Scribe & Zampollet to Clan MacFlandry
    Loose Canon, An Tir Heavy Opera Company
    Semi-offical TASS correspondent (That makes me - the Demi-Tass)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Dorothy J Heydt@21:1/5 to phamp@mindspring.com on Sun Dec 2 02:30:52 2018
    In article <kkc60ed0rls22caerl1v2ie7dkmldjl2oh@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 20:27:14 GMT
    typed in rec.org.sca the following:
    In article <1an50e93qfbtd2aog5b2hi0m9n9iposjtn@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 15:53:20 GMT >>>typed in rec.org.sca the following:
    In article <h5950elp5oumcuivv90jmrtel5lk2gkt9j@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for >>>>>40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / >>>>>constructing one of a particular latitude?

    I just googled "astrolabe calibration" and got many sites. I
    glanced at a few and realized I don't have the math for this.
    But then, I don't have the math for high-school algebra any more.
    This is a very low bar.

    I suggest you also google "astrolabe calibration" and search
    through the sites, and _Deo volente,_ you'll find what you need.
    Good luck.

    That is the next step.

    Or find my copy of Geoffrey Chaucer's Treatise on the Astrolabe.

    Well, my copy of that is with my Collected Works of, and it's in
    Middle English. :) And it'll be either (a) calculated for a
    London or thereabouts latitude, or (b) doesn't mention the
    latitude of the observer at all. But the Internet can be your
    friend.

    And sometimes, it can be that friend who has all sorts of answers,
    some of which are relevant to your question.

    But' I've found a translation into modern English, and an article
    about using Power Point to make the templates. Which has the
    formulas. Weeeee!

    Bravo!

    --
    Dorothea of Caer-Myrddin Dorothy J. Heydt Vinhold/Mists/West Vallejo, California
    PRO DEO ET REGE djheydt at gmail dot com www.kithrup.com/~djheydt/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Basil D@21:1/5 to Nikolai Petrovich on Sun Dec 2 15:04:00 2018
    On 12/1/2018 11:14 AM, Nikolai Petrovich wrote:
    djheydt@kithrup.com (Dorothy J Heydt) on Sat, 1 Dec 2018 15:53:20 GMT
    typed in rec.org.sca the following:
    In article <h5950elp5oumcuivv90jmrtel5lk2gkt9j@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating /
    constructing one of a particular latitude?

    I just googled "astrolabe calibration" and got many sites. I
    glanced at a few and realized I don't have the math for this.
    But then, I don't have the math for high-school algebra any more.
    This is a very low bar.

    I suggest you also google "astrolabe calibration" and search
    through the sites, and _Deo volente,_ you'll find what you need.
    Good luck.

    That is the next step.

    Or find my copy of Geoffrey Chaucer's Treatise on the Astrolabe.

    tschus
    nikolai

    Or go the the source, Theon of Alexandria---oh wait, his work hasn't survived. You'll have
    to make do with John Philoponus. ;-)


    ~~Basil

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Basil D@21:1/5 to Nikolai Petrovich on Sun Dec 2 15:15:29 2018
    On 12/1/2018 7:16 AM, Nikolai Petrovich wrote:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    I can sympathize. I have a nice planisphere; turn the upper circle so the time matches the
    date on the lower circle, and look at the clear part to see what should be in the sky.

    It's set for 30 degrees north, which is about 17.5 degrees from me.

    30 degrees north, and it was made in the USA--sheesh, how un-useful can you get? :-/

    Does anyone have a reference for how one goes about calculating / constructing one of a particular latitude?

    in service

    Nikolai Petrovich


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Dorothy J Heydt@21:1/5 to phamp@mindspring.com on Wed Dec 5 15:53:00 2018
    In article <o5rf0e5l3amunhg30tsh25u4t8kalbc50c@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Nikolai Petrovich <phamp@mindspring.com> on Sat, 01 Dec 2018 07:16:54
    -0800 typed in rec.org.sca the following:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / >>constructing one of a particular latitude?

    in service

    Nikolai Petrovich

    I am having "fun" crunching all this. I shall be writing up my
    notes when I'm done, but I'm not sure how to show the required
    drawings in ASCII art. B-{)>

    If you have an account on any site that does have graphics, you
    could post a link.

    --
    Dorothea of Caer-Myrddin Dorothy J. Heydt Vinhold/Mists/West Vallejo, California
    PRO DEO ET REGE djheydt at gmail dot com www.kithrup.com/~djheydt/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Nikolai Petrovich@21:1/5 to All on Wed Dec 5 07:21:43 2018
    Nikolai Petrovich <phamp@mindspring.com> on Sat, 01 Dec 2018 07:16:54
    -0800 typed in rec.org.sca the following:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating /
    constructing one of a particular latitude?

    in service

    Nikolai Petrovich

    I am having "fun" crunching all this. I shall be writing up my
    notes when I'm done, but I'm not sure how to show the required
    drawings in ASCII art. B-{)>
    --
    Nikolai Petrovich Flandropoff
    Whimiscal Order of the Ailing Wit
    Scribe & Zampollet to Clan MacFlandry
    Loose Canon, An Tir Heavy Opera Company
    Semi-offical TASS correspondent (That makes me - the Demi-Tass)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Nikolai Petrovich@21:1/5 to All on Wed Dec 5 20:03:08 2018
    djheydt@kithrup.com (Dorothy J Heydt) on Wed, 5 Dec 2018 15:53:00 GMT
    typed in rec.org.sca the following:
    In article <o5rf0e5l3amunhg30tsh25u4t8kalbc50c@4ax.com>,
    Nikolai Petrovich <phamp@mindspring.com> wrote:
    Nikolai Petrovich <phamp@mindspring.com> on Sat, 01 Dec 2018 07:16:54
    -0800 typed in rec.org.sca the following:
    Greetings and Salutations

    I have a very nice cardboard astrolabe, but it is calculated for
    40 degree's north. which is about 550 miles south of where I am.

    Does anyone have a reference for how one goes about calculating / >>>constructing one of a particular latitude?

    in service

    Nikolai Petrovich

    I am having "fun" crunching all this. I shall be writing up my
    notes when I'm done, but I'm not sure how to show the required
    drawings in ASCII art. B-{)>

    If you have an account on any site that does have graphics, you
    could post a link.

    I'll have to work on the graphics.

    I'm able to construct the almanucantor circles with compass &
    rule, I 'm just having troubles getting the spreadsheet to come up
    with numbers which make sense.
    --
    Nikolai Petrovich Flandropoff
    Whimiscal Order of the Ailing Wit
    Scribe & Zampollet to Clan MacFlandry
    Loose Canon, An Tir Heavy Opera Company
    Semi-offical TASS correspondent (That makes me - the Demi-Tass)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)