Agenda

Today:   Time of rise and set of Sun and Moon.
     
Predictions for observations:   Predictions of Asteroid Occultations for Europe (target stars brighter than 9 mag)
==> Where to go, what to do, when to look by Oliver Klös, IOTA/ES.
     
Urgent calls for observation
especially for SOTAS members:
 
Dec. 05: 22:01 UT (38) Leda 10.6 mag 115 km
Dec. 05: 23:13 UT (4157) Izu 12.8 mag 22 km
Dec. 07: 04:05 UT (1246) Chaka 9.5 mag 20 km
Dec. 19: 20:05 UT (536) Merapi 12.8 mag 154 km
Dec. 21: 03:07 UT (326) Tamara 11.9 mag 104 km
Dec. 24: 23:02 UT (2634) James Bradley 12.0 mag 36 km
Dec. 25: 22:16 UT (6) Hebe 8.3 mag 230 km
Dec. 27: 19:46 UT Phobos mag km
Dec. 28: 00:01 UT (95) Arethusa 11.0 mag 180 km
Dec. 29: 20:54 UT (2800) Ovidius 11.7 mag 16 km
Dec. 30: 23:15 UT (36979) 2000 SP327 8.4 mag 12 km
         
Further predictions:   Predictions of occultations 2018 by major and minor planets
Predictions of occultations 2019 by major and minor planets
by Edwin Goffin, Belgium.
 
Asteroid Occultations Updates
All events
by Steve Preston.

Chronicle

October 27, 2018:   The first meeting of the working group SOTAS was held in the Liceo cantonale in Bellinzona. Totally 16 "Occultazionisti" exchanged their experiences and discussed the coming projects. The successful event was very motivating for all participants.
Protocol,   Digital VTI,   Prepointing,   History,   1st observation in CH,   ESOP37-Review,   ESOP37-Lectures
     
May 13, 2018:   New: The Swiss Occultation Numbers, a monthly statistic about the observing activities of SOTAS members, was launched.
     
April 21, 2018:   Great success for SOTAS members: At 00:31 UT, the shadow of (130) Elektra, a 180 km asteroid, crossed Europe with center line directly along Switzerland. After good preparation works (workshop) and thanks to brillant weather conditions along the whole path, totally 9 (nine!) SOTAS stations recorded the disappearance and reappearance of the light of a 11.6 mag star. Eric Frappa (Euraster) aranged the chords and simulated the suitable model of the asteroid. Well done guys!
See the observations in detail...
     
Nov. 6, 2017:   Grazing occultation of Aldebaran by the moon: Between 03:14 and 03:18 UT, the star Aldebaran (alpha Tauri) was occulted in a grazing pattern caused by the limb profile of the moon. The observing path of this spectacular event passed Eglisau, a small town North of Switzerland. Stefan Meister prepared and organized an excellent observing campaign. Unfortunately, and once more, sky was clouded out during the interesting moments.
     
Oct. 5, 2017:   Star occultation by Triton: After an extra workshop and numerous previous successful tests, we all felt ready for the rare occultation event. Unfortunately, the weather was clouded out, stormy and/or rainy all over Switzerland exactly during the occultation event. Only one station reported an observation!
Summary and what we expected to see! Results
     
Sept. 18, 2017:   SOTAS has got a forum! Discuss your projects and stay informed. Register for automatic messages.
Special thanks to SAG for hosting the forum.
     
Sept. 16, 2017:   Meeting with workshop at the Observatory Bülach, considering the technics of recording and video time inserter. Goal: The participants are ready to record the occultation by Triton on Oct. 5, 2017.
Protocol  Script
     
June 2, 2017:   "3 - 2 - 1 - lift off" for the new working group! Let's occult!