International Occultation Timing Association

European Section 


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Call for observation

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

New map with possible oberving sites !

Please reload the finding chart for 1degree! It has been an error in this chart.

After the discovery of a ring system by Braga-Ribas, F. et al. Nature 13155(2014) the upcoming occultation may draw your attention. The object is of enormous interest for research. Occultation astronomy is the most powerful technique to gain further knowledge about this little ring system.

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!


Call for Observation

2003VS2 may occult a 16mag star for Europe!

Latest News:

A single track has been recorded from WISE Observatory, Israel!

The Plutino 2003VS2 will occult a 16th mag star for Europe on the 4th of March 2014 around 19h 54min UTC. Observers in this region and beyond please be alert and do observe!

Here you can find 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!


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!


The Journal for Occultation Astronomy is now free for all, except for the latest two issues. These are for members only!

In order to improve the discussion about Occultation Astronomy, the JOA can now freely be downloaded. Only the last two issues are for members of IOTA and IOTA-ES only!

If you are not a member, please have a look here. Otherwise, login using the "members login".




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...






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

The first announcement is made!

Have a look!!


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)

Read more


How many photons do you get from a star?
Read more...

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...