Next message: Henry C. Halboth: "Re: Martelli's Navigational Tables"
Being unfamiliar with the haversine cosine formula, can this be
programmed into a calculator and subsequently submit the variables that
immediately pertain, hence getting the Martelli result without carrying
around tables ?
If yes, where can this modified formula be found, please ?
What is gained by the tables via-a-vis currnent methods, if anything, or
is it be more appropriately deemed, an historical step in celnav's
evolution ?
Thank you again,
Courtney
On Sun, 2005-05-29 at 01:37, Victor Garand wrote:
> Courtney,
>
> "The tables are based on a modified form of the haversine cosine formula.
> They provide a rapid solution of spherical triangles of the celestial or
> terrestrial sphere."
>
>
> ----- Original Message -----
> From: "Courtney Thomas" <>
> To: <>
> Sent: Saturday, May 28, 2005 2:38 PM
> Subject: Re: Martelli's Navigational Tables
>
>
> > Please excuse my ignorance, but what is the value of Martelli's tables ?
> >
> > Thank you,
> > C. Thomas
> >
> >
> > On Sat, 2005-05-28 at 12:36, Victor Garand wrote:
> >> Henry,
> >> The 1952 edition (new GHA edition with additional examples and quick
> >> reference charts (59 pages) ...) includes the following:
> >> -Position Line (sun or star), longitude, latitude and intercept (St.
> >> Hilaire
> >> or calculated altitude) methods.
> >> -Position Line (circumpolar star), longitude, latitude and intercept (St.
> >> Hilaire or calculated altitude) methods.
> >> -Deviation of magnetic compass.
> >> -High-altitude ex-meridian.
> >> -Amplitudes.
> >> -Identification of stars.
> >> -Great Circle distance and initial course.
> >> -Calculation of points on Great Circle.
> >>
> >> Googling, I found that some used book dealers have a copy of these tables
> >> but I couldn't ascertain the vintage.
> >>
> >>
> >> ----- Original Message -----
> >> From: "Henry C. Halboth" <>
> >> To: <>
> >> Sent: Friday, May 27, 2005 9:22 PM
> >> Subject: Re: Martelli's Navigational Tables
> >>
> >>
> >> >I have used the 1914 edition and still do for the time sight solution. I
> >> > really did not know that these tables had continued in print as late as
> >> > 1952 and must assume them to have been modernized to allow for an
> >> > intercept and azimuth solution.
> >> >
> >> > On Wed, 25 May 2005 10:17:27 -0600 Victor Garand <>
> >> > writes:
> >> >> Is there anyone on the list who still uses these? My edition is a
> >> >> 1952 edition, is there a later edition?
> >> >
> >
