BoPlanets-V1.3-Up1 updated

In V1.3-Up1 the calculation of minimum and maximum altitude for the
horizontal view was corrected.
If the absolte values of minimum and maximum declination are different,
then minimum and maximum altitude were determined incollrectly in release V1.3.
For the natural orbital parameters of the planets this difference is quite small;
so the effect of incorrect minimum and maximum altitude is hardly to see.
But if orbital parameters are modified, then the difference may be
quite significant.
Example:
- observer: Mercury
- planet: Mars
- excentricity of Mars=0.9
- inclination of Mars=-45 degrees

Posted by B.Ostermann 2009-05-11

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