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Transcontinental Occultation of a 12m4 star UCAC4 410-143659 by Triton on the 5th/6th of Oct 2017 around 23h50 UTC.
Visible from USA and large parts of Europe
Many stations throughout Europe have recorded the event with telescope of different sizes ranging from 20cm to more than 1 meter diameter.
An example of the central flash recorded near the central line in Elvas, Portugal is shown in the following picture. It as been taken with a 27cm telescope and a 12 bit digital CCD camera.
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A very preliminary lightcurve shows the occultation with the central flash. Exposure time 0.3 seconds. No filter. Copyright W. Beisker, IOTA-ES, 2017
The updates of the predictions of this campaign can be
followed here.
Minor Planet Occultations of Bright Stars
Occultations by stars brighter than about 9th mag will be presented in this blog.
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.
Asteroid TU24 recorded from Munich around 1h 10min UT on 30th
Jan 2008. Fast motion (5x). Near miss of 11m9 star TYC 4140-520
Inauguration of IOTA-ES 0.5m portable telescope. It has been named "m2"
On the 8th of October an inauguration party has been held at the Archenhold observatory in Berlin. Members of IOTA-ES including the board of directors celebrated the inauguration with champagne and
sausages.
The first real observation with the instrument had been the successful observation of the occultation by Pluto on the 19th of July 2016. It will still take some more time, to finish some minor
work and to write the operation instructions. But in the near future it can be booked by IOTA members for observation projects.
Successful observation of a Chariklo occultaton in Namibia with the 0.5m portable instrument m2.
On the 9th of April the m2 instrument was used by IOTA-ES member Mike Kretlow as part of an international campaign in cooperation with the EU research project LuckyStar to observe the occultation of
UCAC4-294-211208 (14m) by Chariklo in Namibia. Despite poor weather situation, the occultation could be recorded using a Raptor camera with 0.08 sec exposure time. This was the first "Out of Europe"
use of m2.
More positive observations came from a IOTA-ES member (Karl-Ludwig Bath) observing at the IAS observatory (Hakos). One more station operated by Jean-Luc Dauvergne was successful
too.
3 out of 6 deployed stations got data, the other failed due to unfavorable weather conditions.
A very preliminary lightcurve shows the central body near its maximal diameter and the rings of Chariklo as well.
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