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$Fred Hebard: Re: 2005 Nautical Almanac refraction table$

Re: 2005 Nautical Almanac refraction table
From: Marcel Tschudin
Date: 2005 Aug 29, 19:05 +0300

Fred did send recently these refraction values for Frank:

> Frank,
>
> You could ooze them out of the USNO site.  But here goes, all
> corrections negative arcminuutes. Altitude in degrees with minutes
> behind decimal point.
>
> d.'     corr
> 0.0     33.8
> 15      30.9
> 30      28.3
> 45      26.1
> 1.0     24.1
> 1.15    22.3
> 1.30    20.8
> 1.45    19.4
> 2.0     18.2
> 2.15    17.1
> 2.30    16.1
> 2.45    15.2
> 3.0     14.3

I tried to find them on the USNO site and with the help of
Google...unfortunately without luck. May I therefore ask someone in the
list - may be you Fred? - to what atmospheric (standard) conditions
(temperature and air pressure) they refer to?

Thank you.
Marcel

$Fred Hebard: Re: 2005 Nautical Almanac refraction table$

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