The International Occultation Timing Association

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Information Site for Lunar Occultations & Grazes

(click on the RELOAD button to receive the most current version)
All data and charts generated by winOccult 3.6 unless otherwise stated

Last Updated 6 Aug 2006
WARNING! Information and e-mail addresses contained herein, are for scientific use only. By entering this site, you agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to: allow, enable,or otherwise support the transmission of mass unsolicited, commercial advertising or solicitations via direct mail, electronic mail, or by telephone.


 25th-27th August 2006 - 25th European Symposium on Occultation Projects

Live Chat Room for Occultation Discussions

Brand New for 2006 - The Occultation Observer's Handbook by Robinson & Povenmire

Asteroid Occultations

2006 - 2nd & 3rd Quarter Asteroid Occultations
Derek Breit's Regional Asteroid Path Maps for USA

Upcoming Events

Check David Dunham's Site for General Updates

04 Aug - Antares - Southern Most Africa, South Indian Ocean
11 Aug - Uranus - southern and eastern South America
16 Aug - Pleiades - Japan, Eastern Siberia, Alaska
18 Aug - beta Tauri - Eastern South America, Cape Verde, Canary Islands
28 Aug - Spica - Tasmania, New Zealand, Antarctica
01 Sep - Antares - Southern South America, Antarctica

2006 Predictions

Worldwide Occultations of Antares, Spica and beta Tauri
Worldwide Occultations of the Pleiades Cluster
Occultations of the 7 Brightest Pleiads for North America
Occultation of Bright Planets by the Moon
Occultation of Stars by the Planets and Their Moons
Occultation of Stars by TNO's [2006-2010]
Occultations of Bright Stars for 40 North American Cities
Graze Predictions and Charts for North America [RASC]
Eclipse Maps and Weather

Helpful Information

I.O.T.A.'s Administrative Site
IOTAoccultations@yahoo.com - Discussion Maillist
NWS Current Weather & Forecasts
Time Conversion Tables - UTC to Local for USA
World Time Zone Map

Occult Software and Related Information

Occult version 3.6 Prediction Software
occult-software@yahoo.com - Discussion Maillist
deltaT and deltaAT Issues by David Herald
The ZC Star Catalog (not to be interfaced with Occult)

Basics of Total Occultations

Basic Information and How to Obtain Predictions
The Prediction Format for Total Occultations
The Occult Multi-City Prediction Format
The Value of Total Lunar Occultations
Timing & Location Accuracies for Observations
A Simulator for Reaction Time by Doug Kniffen
Mapping Services and Software for Determining Coordinates
Reporting Occultation Timings by E-mail
Help IOTA Coordinate Occultation Observations

Basics of Grazing Occultations

The Grazing Occultation
How to Read ACLPPP & GRAZEREG Predictions
IOTA Standard Stations
North American city coordinates
Limb Profiles of the Moon by Mitsuru Soma
Archive of Observed Graze Profile Reductions

Regional Information on Events
all these are external links

Local Information for Mid-Atlantic Occultations - D. Dunham
Local Information for NE USA & SE Canada - B. Timerson
Local Information for the Kansas-Missouri Area - R. Sandy
Local Information for the San Francisco Bay Area - D. Breit
Local Information for the Houston Area - P. Maley
Local Information for the Edmonton Alberta area - A. Ling
Occultations for Belgium, France, Spain, and Portugal - J. Schwaenen

If you have a local URL for your area, send information to the webmaster for inclusion

Use of Video on Timing Events
A Light Weight Portable Video Setup - by R. Nugent
Richard Nugent's System - by D. Dunham
Tom Heisey's Video Setup (PDF)
"Millisecond Video Timing for the Masses" by S. Herchak
Finding Limiting Mag for Visual/Video Camera Observations

LiMovie measurement tool for video occultations
LiMovie measurements made by the author
(note: with IE right click the page & select the translation option)

Other Sources of Information
Sky & Telescope's Occultation Page
Links to Other Occultation Sites
Mitsuru Soma's Listing of Reported Grazes
Richard Wild's Listing of Reported Grazes
Observations & Reductions at ILOC, Japan
ESOP XVIII Abstracts
Miscellaneous Stuff
Miscellaneous Programs and Patches
XZ80Q Release Notes and Downloadable Catalog
I.O.T.A. Tax Information/Expense Report
Additional Reference Reading Material


Educational StarAward


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astronomy and space links, shortcuts, favorites and bookmarks.

This site maintained for IOTA by Rob Robinson, Bonner Springs KS
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Send comments and mail to I.O.T.A. President, David Dunham, Greenbelt MD
IOTA Administration, Stillwater, OK, email I.O.T.A.

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