* The index error is regarded as positive when the
angle displayed by the instrument is greater than the actual angle.
The altitude corrections for the moon include oblateness of the earth. The semidiameter of the moon is internally computed from the horizontal parallax if the latter exceeds 50'. In this case, entering a semidiameter is not required (will be ignored).
The program internally sets dip=0 if any form of an artificial horizon or a zenith distance is chosen. If an external artificial horizon (pan with liquid) is used, the sextant altitude is automatically divided by two after subtracting the index error.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the license or any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License (http://www.gnu.org/licenses/) for more details.
Henning Umland N 53° 20' 34'' E 9° 52' 00''
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