Hallo miteinander,
ich denke wir alle wissen, daß am 6. Juni der letzte Venustransit für mehr als 100 Jahre bevorsteht. Von Deutschland aus ist der Transit nur noch teilweise sichtbar, 3. und 4. Kontakt finden etwa eine Stunde nach Sonnenaufgang statt. Anderswo auf der Welt dagegen kann man nur die ersten beiden Kontakte oder teilweise auch den kompletten Transit verfolgen.
Wie schon beim vorangegangenen Transit im Jahr 2004 gibt es auch für dieses Mal wieder Initiativen, Schulen aus aller Welt durch die Messung der Ein- und Austrittszeiten zusammenzubringen und den Schülern so die Vermessung unseres Sonnensystems nahezubringen. Ein Aufruf zum Mitmachen bei einer internationalen Kampagne, organisiert von Jaqueline Faherty in Chile, hänge ich mal im O-Ton an
Viele Grüße
Caro
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">Zitat:<hr height="1" noshade id="quote">As you probably know, on June 5th/6th Venus will make its rare appearance
as a small dot across the face of the sun. To celebrate the event a
number of astronomers from mainland Chile are flying to the remote Easter
Island to view the event and make a measurement of first contact (ingress
interior/exterior) with local students. We are hoping to link the
students we are working with on the island with other groups around the
world to reproduce the measurement first made/proposed by Edmund Halley in
the late 1600's.
We would love it if you-- or friends that you might know working with
school children-- would participate in the event. Very few materials are
needed. Since we will be on Easter Island, we get a limited viewing of
the transit (it begins two hours before sunset). Therefore we will only
be measuring the time of ingress interior/exterior and not egress.
However we have colleagues in Hawaii, Australia, and Holland who will see
the end of the transit so we can make the measurement multiple ways.
To participate you only need do the following:
1. At the time of the transit have a calibrated clock (GPS clock
preferred but not necessary)
2. From your location we need the time of ingress or egress interior
(exterior as well if you can do it). This is the time that Venus has
passed into the interior of the Sun. See this webpage for an estimated
time of when you can expect the events to occur for your location:
http://transitofvenus.nl/wp/where-when/local-transit-times/
3. As a secondary measurement of the transit we are also going to try
to match images taken of the transit from different positions on Earth.
If you will be photographing the event please try to capture an image
exactly (or close to exactly) on the 10's of each hour. We will
coordinate the rest.
4. Be sure to take a photograph of you and your students
watching/measuring/enjoying the transit
5. Email Jackie Faherty
(jfaherty17(==>)gmail.com) saying that you are
interested in participating in our group so we can add you to our global
network and map:
http://www.das.uchile.cl/~drodrigu/easter/transit.html
Once again we are especially interested in school groups that will be
viewing the transit. We hope to inspire the next generation of
scientists, demonstrating how these exciting visual astronomical
phenomenon can be used for scientific purposes. Clearly inspiration (and
not accuracy of the measurement) is the goal of our project.
For more information on our team please see our website at:
http://www.das.uchile.cl/~drodrigu/easter/index_en.html
For the math behind the measurement please see David Rodriguez's blog:
http://strakul.blogspot.com/20…-to-sun-with-transit.html
Thank you!<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
