[Kstars-devel] Elevation correction for rising/setting times

[Pablo de Vicente]

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El Miércoles 3 de Septiembre de 2003 14:52, Pablo de Vicente escribió:

>   I have an almanac and I have checked the rise/transit/set time for
> Madrid. but  I have to refine the rise/set/transit code because, though it
> works fine for the Sun it does not work correctly for the moon. It seems it
> needs one more iteration.
>
>   The OAN almanac says that the Moon rises at 13:31, and sets at 22:52 in
> Madrid. KStars says that it rises at 15:27 and sets 00:34 if I use the same
> correction as with the Sun, and this time changes if I change the time.
> However if you set the time and see the Moon appear/disappear above/below
> the horizon in KStars's main window, the moon rises at  15:31:30 and sets
> at 22:51:40 which differs about 30 seconds from the almanac values. This
> difference is aceptable taking into account the almanac only gives the
> value with a precission of minutes.
>
>   I need to revise the code for the rise/transit/set times and once
> corrected check if applying the same correction as for the sun (-50 arcmin)
> works fine.
>

 Ok, I think I have finished this for the time being. I have made some changes 
to the SkyObject class. Changes are splitted in two different commits. The 
first one has solved the difference I saw between the data from the almanac 
and that coming from KStars, and the second one slightly cleans part  bit the 
code. 

 Can somebody else please check the rise/set/transit time for the Sun and Moon 
by comparing with almanacs or with reality?.

regards,

Pablo.
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