Donít ignore witnesses because of ``theoretically calculated Visibility Graphs``


The true path is the path of Islam, the path of Prophet Muhammad (SW)

Be vigilant and don`t miss the opportunity to perform the Sunnah of sighting the Hilal on the (Astronomicaly unconditioned) eve of 29th date, and donít ignore witnesses because of ``theoretically calculated Visibility Graphs! ``

The world is a witness to the past and the present that the moon had been sighted even though calculations showed negative visibility on certain days. The recent moon sighting of ``Shawwal 1430H`` was sighted on the eve of Saturday 19th Sep 2009 in many countries including Pakistan and Saudi Arabia. 

Be aware that the astronomical computations are not always the same in their ability to predict the moon`s visibility. They use diverse criteria and calculation theory, which also leads to prove uncertainty of the Visibility Maps.

Another example of calculated graphic is Graphed Moon faces by astronomicaly computerised ``Moon faces Clock ``,

Read more  ....

The Visibility Graphs are only general predictions - so don`t take them too literally and don`t ignore testimonies.

See the email exchange on ICOP Group below:
Dear brothers / sisters

Salaamun 'alaykum

I need to get some clarification on the calculation method used to give the prediction graphs on the ICOP website. Specifically with regards to height above sea-level. Does the calculation used take this into consideration or not? So, for example, in an area where the sighting is not possible, if someone were to climb to the peak of a high mountain, would it then change the possibility of visibility or not?

T. R. Jaffer

The calculations apply a average visibility model. They do NOT take local weather conditions into account and they do not consider local elevation. You can easily see that from the perfect curves in the visibility graphs.

Climbing a mountain is just like climbing to better and better weather. Climbing a mountain can drastically improve the local seeing conditions in terms of dust and humidity and thus greatly improve your chances to see the more difficult crescents.

On the other hand, your own body will have more and more problems with the reduced air pressure at great elevations and thus going to high to fast might not be useful. Example: Driving from sea level to 4000m of elevation can be quite a problem for most people.


Martin Elsasser