1. is an independent part of the International Occultation Timing Association IOTA-ES is an taxexempt organization under german laws, with members in many european countries. Its goals are the prediction, observation and analysis of occultation phenomena. IOTA-ES > Fachgruppe Sternbedeckungen des VDS

2. The magic TREangle we have to look for: Research Education Technology

3. Sun Eclipses to improve the solar diameter The moon Lunar limb improvement “Moonlimb” Impacts of meteors on the moon Planets and satellites Planetary atmospheres of ● Jupiter ● Saturn ● Titan ● Triton ● {Titania} ● Pluto and Charon Occultation Phenomena Asteroids Shapes Astrometry Photometry Stars Diameters Limb darkening Astrometry Photometry Venus transit is indeed a true occultation phenomenon!

4. Examples of the past.....

5. Cederberg, SAR 12'' SCT with IOC Camera Examples of today... An occultation by Titan with flash...

6. Technology (Hardware) Timing Improvement of the visual timing New timing devices (DCF, GPS..) Video time inserter Photometry Fast photomultiplier system (Uniphos) Testing commercial video systems Slow Scan 12 Bit CCD camera (IOC)

7. Technology (Software) Prediction EVANS to PC GRAZEREG, WINOCCULT Prediction of Occultations by Asteroids Local Circumstances Analysis Profiles from lunar grazes Lunar limb correction Shape of asteroids Reduction of image data cubes Baum-Code approximation Ray-tracing (PLATONA) Logistics: How to organize an expedition

8. Real-Time Astronomy Movement of solar system bodies Eclipses Occultations Cometary movement Rotation of celestial bodies Mutual events Meteor traces on the moon

9. Education Observation training Lunar occultations as training Talks and discussions at public observatories and plantariums Expeditions for motivation of observers

10. What is important to motivate the public? Compete against the WWW worldWWW Compete against entertainment.com Compete against advertisment.com Therefore: We have to put excitement in astronomy! Can we produce DVD's such as... "Changes in the Universe" ???

11. Representatives and members in many EU countries: Belgium Czech Republic Finland France Germany Great Britain Italy Netherlands Poland Portugal Slovac Republic Spain (Switzerland) Cooperation partners in the IOTA worldwide Observations also in Namibia in cooperation with the IAS, The International Amateur Obseratory, Gamsberg-Hakos

12. IOTA-ES can provide help for you in different fields.... Organizing, planning Technical support such as video, telescopes, timing devices etc. The public as well as “multiplicators” can get help for their activities. Just call in!

13. Proliferation of Information: www.iota-es.dewww.iota-es.de website Discussions at the Planoccult and Moonoccult Mailing lists Contact: vt2004@iota-es.devt2004@iota-es.de

14. What will we measure for the Venus Transit 2004 Trying to observe the atmosphere of Venus in Absorption with a spectrograph Observing the venus disk against the granules of the sun from Europe and Namibia Trying to catch the glow of Venus's atmosphere shortly before and after the first and last contact. Look at www.iota-es.de for more infos in the next weeks!www.iota-es.de