International Occultation Timing Association

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(10199) Chariklo Occults 15h mag Star
UCAC4 257-116038 for Southern Africa

One more attempt to gain more knowledge about the complex Chariklo system. On the 28th of June the Chariklo system will again occult a relatively bright star. Read more .


Occultations to Monitor Pluto's Atmosphere Before and During the New Horizons Flyby

The Pluto mission "New Horizons" is just a little more than 1 year away from its first destination, the Pluto system. In July next year the flyby will take place.

Therefore the upcoming occultations of bright stars by Pluto are the last chance, to monitor Pluto's atmosphere in the time before the flyby.

The next occultation is on the 5th of July 2014. Stellar Magnitude 15m7. Visible from southern Europe! Read more!


(10199) Chariklo Occults 12th mag Star
UCAC4 256-124411 for southern Africa

IOTA-ES took part in the successful campaign

The multi-national campaign set up stations from Windhoek to the southern part of South Africa. Chariklo's ring has been detected again.

The background of the campaign can be found in the following pages:

On the 29th of April an occultation of a bright star (12th mag) UCAC4 256-124411 will take place for southern Africa.The event will be at 23h09min UTC for central occultation. The shadow will hit southern Africa around 23h13min UTC. Read more!


33rd European Symposium on Occultation Projects

Prague, August 29 - 31, 2014

We are glad to invite all members, friends, and others, who are interested in occultation phenomena, to attend the 33rd European Symposium on Occultation Projects which is taking place in Prague, Czech Republic- under the auspices of the Mayor of Prague.
Read more!


Minor Planet Occultations of Bright Stars

Occultations by stars brighter than about 9th mag will be presented in this blog.http://call4obs.iota-es.de


Grazing Occultations of Stars by the Moon

A field of professional astronomy between science and beauty

Among all occultation phenomena in the sky grazing occultations of stars by the moon have a very unique character. The observation of these spectacular events ... read the overview in full length!




For Occultwatcher Users:

European Feed for Lunar Occultations of Double Stars

There is a "Lunar Occultations Add-in" for "OccultWatcher" ready for download to get in OW interesting lunar occultations of double and suspected double stars. Read more..




.Asteroid TU24 recorded from Munich around 1h 10min UT on 30th Jan 2008. Fast motion (5x). Near miss of 11m9 star  TYC 4140-520



EU-Project EUROPLANET creates a database for professional and amateur observatories!. Have a look to their questionaire! Read more...


Information about running TNO campaigns

Information about running campaigns for TNO occultations you can find here at Felipe Braga-Ribas website. Follow up the prediction process and get ready to observe if it is in your area!




The XXXIII European Symposion on Occultation Projects is held in Prague.

The first announcement is made!

Have a look!!


The Journal for Occultation Astronomy is now free for all, except the last 2 issues.

Get it for free!


Call for Observations!

Occultations of Bright Stars by Minor Planets can be found HERE


Reporting lunar occultations

The most significant change for 27 years in reporting lunar occultations is now underway. You have to know, how to report lunar occultations from now on! Your reports have to be sent to a new mailing address.

Dave Herald reports from Canberra, Australia



Iota Occultation Camera (IOC)

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How many photons do you get from a star?
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GPS ... Where am I ?

Positionsbestimmung mit GPS und Karte... in German Read more...

The Artificial Night Sky Brightness for Occultation Observing Stations in Europe
Read more...