Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-28 Thread Lizeth Norman 
Nothing beats an E6-B on your wrist. Lots of people have them. Very
few of them know. Great way to have fun at a dinner party.
"Pardon me madam: That's an elegant slide rule you have!"

On Mon, Oct 26, 2015 at 9:23 PM, Graham / KE9H  wrote:
> Both the sextant and the slide rule will still function after an EMP event.
> Not much other electronic stuff will.
> --- Graham / KE9H
>
> ==
>
> On Mon, Oct 26, 2015 at 4:20 PM, paul swed  wrote:
>
>> Crazy bit of humor/timing in all of this I guess.
>>
>> Oddly at the last MIT flea I picked up a very nice astro-compass including
>> case and manual. Also a news clipping that the Navy was restarting training
>> on celestial navigation. Now I just need to add a mount to the car dash
>> board.
>> All prepared for the day the Glenda GPS fails.
>>
>> By the way if its celestial navigation, next will be slide rules. Pretty
>> hard to tamper with them. The only virus they get are cold.
>> Regards
>> Paul
>> WB8TSL
>> Sorry really going astray here.
>>
>> On Mon, Oct 26, 2015 at 12:52 PM, Scott McGrath 
>> wrote:
>>
>> > Or with the appropriate filters you can shoot the sun with a sextant like
>> > the old time Mariners did
>> > I still have a sextant and still use it along with a copy of Bowditch
>> >
>> > Content by Scott
>> > Typos by Siri
>> >
>> > > On Oct 26, 2015, at 9:13 AM, Jim Lux  wrote:
>> > >
>> > >> On 10/25/15 9:37 AM, jim s wrote:
>> > >>
>> > >> Somewhat time related.  The Navy realizes that GPS might not always
>> > >> work.  I don't imagine that aircraft in the US Air Force will be able
>> to
>> > >> do this very reliably, and the article doesn't mention that service.
>> I'm
>> > >> guessing that a lot of strategic Air Force aircraft have star trackers
>> > >> that will work some of the time w/o GPS (at night).
>> > >
>> > > There's an excellent set of CD-ROMs with about 50 papers on celestial
>> > nav and time keeping from the Institute of Navigation.
>> > >
>> > > https://www.ion.org/publications/upload/CelestialNavTOC.pdf
>> > >
>> > > Papers in there about all manner of star trackers and celestial nav,
>> > from prehistory through the Renaissance era, to modern computerized
>> > celestial nav boxes, etc.
>> > >
>> > > $50, as I recall.
>> > >
>> > > Celestial nav during the daytime isn't all that hard, if you have a
>> > suitable telescope.  With a 28x telescope on a theodolite, you can see
>> > Polaris, for instance.  The trick is in finding it first.
>> > >
>> > >
>> > >
>> > >>
>> >
>> http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html
>> > >>
>> > >>
>> > >> Thanks
>> > >> Jim
>> > >> ___
>> > >> time-nuts mailing list -- time-nuts@febo.com
>> > >> To unsubscribe, go to
>> > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> > >> and follow the instructions there.
>> > >
>> > > ___
>> > > time-nuts mailing list -- time-nuts@febo.com
>> > > To unsubscribe, go to
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>> > > and follow the instructions there.
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>> > and follow the instructions there.
>> >
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[time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-27 Thread Mark Sims 
It's also interesting that they are not teaching/using printed tables.  They 
enter the readings into a computer to calculate the location...  assuming the 
computer has not been EMP'd or hacked.   It's much harder to EMP/hack a book.  

I was taught the subtle wonders of celestial navigation in my high-school NAVY 
ROTC course in the early 70's.  I wrote a FORTRAN program to do the 
calculations on an IBM 1130.  Commander was quite impressed...  I was offered a 
chance to attend the Naval Academy.


  
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Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-27 Thread Jim Harman 
On Mon, Oct 26, 2015 at 5:20 PM, paul swed  wrote:

> next will be slide rules.


OT, but I have recently dusted off my trusty Pickett to use at the gas
station. The Prius trip computer gives miles driven since last fill-up and
MPG, so miles / MPG * $/Gal = $ to pre-pay, saving a few cents/gal and a
trip inside to get my change. Surprisingly accurate.


-- 

--Jim Harman
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Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-27 Thread Graham / KE9H 
Both the sextant and the slide rule will still function after an EMP event.
Not much other electronic stuff will.
--- Graham / KE9H

==

On Mon, Oct 26, 2015 at 4:20 PM, paul swed  wrote:

> Crazy bit of humor/timing in all of this I guess.
>
> Oddly at the last MIT flea I picked up a very nice astro-compass including
> case and manual. Also a news clipping that the Navy was restarting training
> on celestial navigation. Now I just need to add a mount to the car dash
> board.
> All prepared for the day the Glenda GPS fails.
>
> By the way if its celestial navigation, next will be slide rules. Pretty
> hard to tamper with them. The only virus they get are cold.
> Regards
> Paul
> WB8TSL
> Sorry really going astray here.
>
> On Mon, Oct 26, 2015 at 12:52 PM, Scott McGrath 
> wrote:
>
> > Or with the appropriate filters you can shoot the sun with a sextant like
> > the old time Mariners did
> > I still have a sextant and still use it along with a copy of Bowditch
> >
> > Content by Scott
> > Typos by Siri
> >
> > > On Oct 26, 2015, at 9:13 AM, Jim Lux  wrote:
> > >
> > >> On 10/25/15 9:37 AM, jim s wrote:
> > >>
> > >> Somewhat time related.  The Navy realizes that GPS might not always
> > >> work.  I don't imagine that aircraft in the US Air Force will be able
> to
> > >> do this very reliably, and the article doesn't mention that service.
> I'm
> > >> guessing that a lot of strategic Air Force aircraft have star trackers
> > >> that will work some of the time w/o GPS (at night).
> > >
> > > There's an excellent set of CD-ROMs with about 50 papers on celestial
> > nav and time keeping from the Institute of Navigation.
> > >
> > > https://www.ion.org/publications/upload/CelestialNavTOC.pdf
> > >
> > > Papers in there about all manner of star trackers and celestial nav,
> > from prehistory through the Renaissance era, to modern computerized
> > celestial nav boxes, etc.
> > >
> > > $50, as I recall.
> > >
> > > Celestial nav during the daytime isn't all that hard, if you have a
> > suitable telescope.  With a 28x telescope on a theodolite, you can see
> > Polaris, for instance.  The trick is in finding it first.
> > >
> > >
> > >
> > >>
> >
> http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html
> > >>
> > >>
> > >> Thanks
> > >> Jim
> > >> ___
> > >> time-nuts mailing list -- time-nuts@febo.com
> > >> To unsubscribe, go to
> > >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > >> and follow the instructions there.
> > >
> > > ___
> > > time-nuts mailing list -- time-nuts@febo.com
> > > To unsubscribe, go to
> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > > and follow the instructions there.
> > ___
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> > To unsubscribe, go to
> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
> >
> ___
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Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-26 Thread Scott McGrath 
Or with the appropriate filters you can shoot the sun with a sextant like the 
old time Mariners did
I still have a sextant and still use it along with a copy of Bowditch

Content by Scott
Typos by Siri

> On Oct 26, 2015, at 9:13 AM, Jim Lux  wrote:
> 
>> On 10/25/15 9:37 AM, jim s wrote:
>> 
>> Somewhat time related.  The Navy realizes that GPS might not always
>> work.  I don't imagine that aircraft in the US Air Force will be able to
>> do this very reliably, and the article doesn't mention that service. I'm
>> guessing that a lot of strategic Air Force aircraft have star trackers
>> that will work some of the time w/o GPS (at night).
> 
> There's an excellent set of CD-ROMs with about 50 papers on celestial nav and 
> time keeping from the Institute of Navigation.
> 
> https://www.ion.org/publications/upload/CelestialNavTOC.pdf
> 
> Papers in there about all manner of star trackers and celestial nav, from 
> prehistory through the Renaissance era, to modern computerized celestial nav 
> boxes, etc.
> 
> $50, as I recall.
> 
> Celestial nav during the daytime isn't all that hard, if you have a suitable 
> telescope.  With a 28x telescope on a theodolite, you can see Polaris, for 
> instance.  The trick is in finding it first.
> 
> 
> 
>> http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html
>> 
>> 
>> Thanks
>> Jim
>> ___
>> time-nuts mailing list -- time-nuts@febo.com
>> To unsubscribe, go to
>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
> 
> ___
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Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-26 Thread paul swed 
Crazy bit of humor/timing in all of this I guess.

Oddly at the last MIT flea I picked up a very nice astro-compass including
case and manual. Also a news clipping that the Navy was restarting training
on celestial navigation. Now I just need to add a mount to the car dash
board.
All prepared for the day the Glenda GPS fails.

By the way if its celestial navigation, next will be slide rules. Pretty
hard to tamper with them. The only virus they get are cold.
Regards
Paul
WB8TSL
Sorry really going astray here.

On Mon, Oct 26, 2015 at 12:52 PM, Scott McGrath  wrote:

> Or with the appropriate filters you can shoot the sun with a sextant like
> the old time Mariners did
> I still have a sextant and still use it along with a copy of Bowditch
>
> Content by Scott
> Typos by Siri
>
> > On Oct 26, 2015, at 9:13 AM, Jim Lux  wrote:
> >
> >> On 10/25/15 9:37 AM, jim s wrote:
> >>
> >> Somewhat time related.  The Navy realizes that GPS might not always
> >> work.  I don't imagine that aircraft in the US Air Force will be able to
> >> do this very reliably, and the article doesn't mention that service. I'm
> >> guessing that a lot of strategic Air Force aircraft have star trackers
> >> that will work some of the time w/o GPS (at night).
> >
> > There's an excellent set of CD-ROMs with about 50 papers on celestial
> nav and time keeping from the Institute of Navigation.
> >
> > https://www.ion.org/publications/upload/CelestialNavTOC.pdf
> >
> > Papers in there about all manner of star trackers and celestial nav,
> from prehistory through the Renaissance era, to modern computerized
> celestial nav boxes, etc.
> >
> > $50, as I recall.
> >
> > Celestial nav during the daytime isn't all that hard, if you have a
> suitable telescope.  With a 28x telescope on a theodolite, you can see
> Polaris, for instance.  The trick is in finding it first.
> >
> >
> >
> >>
> http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html
> >>
> >>
> >> Thanks
> >> Jim
> >> ___
> >> time-nuts mailing list -- time-nuts@febo.com
> >> To unsubscribe, go to
> >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> >> and follow the instructions there.
> >
> > ___
> > time-nuts mailing list -- time-nuts@febo.com
> > To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> > and follow the instructions there.
> ___
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> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
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Re: [time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-26 Thread Jim Lux 

On 10/25/15 9:37 AM, jim s wrote:


Somewhat time related.  The Navy realizes that GPS might not always
work.  I don't imagine that aircraft in the US Air Force will be able to
do this very reliably, and the article doesn't mention that service. I'm
guessing that a lot of strategic Air Force aircraft have star trackers
that will work some of the time w/o GPS (at night).



There's an excellent set of CD-ROMs with about 50 papers on celestial 
nav and time keeping from the Institute of Navigation.


https://www.ion.org/publications/upload/CelestialNavTOC.pdf

Papers in there about all manner of star trackers and celestial nav, 
from prehistory through the Renaissance era, to modern computerized 
celestial nav boxes, etc.


$50, as I recall.

Celestial nav during the daytime isn't all that hard, if you have a 
suitable telescope.  With a 28x telescope on a theodolite, you can see 
Polaris, for instance.  The trick is in finding it first.





http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html


Thanks
Jim
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[time-nuts] Celestial Navigation instruction being reinstated in the US Navy

2015-10-26 Thread jim s 


Somewhat time related.  The Navy realizes that GPS might not always 
work.  I don't imagine that aircraft in the US Air Force will be able to 
do this very reliably, and the article doesn't mention that service.  
I'm guessing that a lot of strategic Air Force aircraft have star 
trackers that will work some of the time w/o GPS (at night).


http://www.latimes.com/nation/la-na-celestial-navigation-20151025-story.html

Thanks
Jim
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