A global view of the solar eclipse over the Earth in 2012 (GEE2012)
in the northern Pacific limb on May 21 by multi-point observations
in Japanese
Let's make a movie like this by image sharing!
update 2012/5/18
| GEE2012 comittee member
|
| Toshihiro Handa (Kagoshima University)
|
| Koji Hata (Okayama Shoka University Highschool)
|
| Tadashi Hara (Toyooka Highschool, Saitama)
|
| Toshihiro Horaguchi (National Museum of Nature and Science, Tokyo)
|
| Masaaki Hiramatsu (National Astronomical Observatory of Japan)
|
| Tatsuyuki Arai (Katsushika City Museum)
|
| Yusuke Sato (Hokkaido University)
|
| Kouji Ohnishi (Nagano National College of Technology)
|
| supported by Japan Associaton of Hand-on-Universe (JAHOU)
|
This program is a part of Eclipse2012.jp. Please visit there, too.
We assume that you know how to take an image of the Sun with a telescope.
We are sorry, but we cannot instruct how to take a good image
without any damage of your telescope or yourself.
On May 21, 2012, we can watch an annular eclipse in the northern Pacific limb.
And around there we can watch a partial eclipse of the Sun.
Let's share the images of this solar eclipse at many locations on Earth.
It will give the Global view of the eclipse
and we can feel this is the single event on the planet Earth.
Purpose
Make a collection of the eclipsing images taken at the many locations
on Earth.
Using them we can make a movie of the eclipse from the global point of view.
The combination of this movie and a computer simulated movie
from the space will help to understand what happens actually.
In 1997 and 2009, we tried to make it.
See an example movie from
the project in 1997 (Live!Eclipse97) from
here,
and the project in 2009 from
here.
Unfortunatelly, in 1997 the total eclipting zone is far from the
coverage and in 2009 it was cloudy at the most locations.
We try again to make such a movie using images
in the coming annular eclipse.
Moreover, Venus transit will be observed on June 6, 2012.
The images taken from more then two locations separated over 2000 km
can give the triangular parallax by a small telescope.
It will give the distance between the Sun and Earth, or 1 astronomical unit,
in km or miles.
The observational skill is the same as the annular eclipse observations.
We can make a drill of this event.
Observations
The main target of the projet is making the collection
of photos from many locations.
Basically we assume the tracking observations
using a telescope with an appropriate filter,
such as ND or H-alpha.
observation time(UTC/JST)
- bottom line spec.
- between 6h and 9h30m (JapanST=UTC+9)
- from 21h May 20 to 0h30m May 21 (UTC)
- every 15 min, 15 shots
- time accuracy within 1 min
- standard spec.
- before the first contac after the fourth contact
- every 5 min (0m,5m,10m,15m,20m,25m,30m,35m,40m,45m,50m,55m)
- time accuary within 30 sec
We want to make simultaneous observations.
It means the absolute timing is more important
than the time interval.
- Please take an image at the assigned time, even if it is cloudy.
- You can use an iterval time.
- If you can take more frequent shots, it is acceptable.
Please provide at least images at the assigne time from your shots.
If you can take frequect pictures or video with a rate higher than 1shot/min,
we are happy!
- If you will take an image of the maximum eclipse, you may skip the image taking
at the coordinated timing just before and/or after then.
resolution
We propose the following 4 grades.
Please take your images adjusted to one of them, if possible.
We welcome images with other quarity.
| grade | resolution | minimum focal length (f)
(for full size array) | remarks
|
| S | 2 arcsec or higher | 1200mm | telescope larger than 65mm appature
|
| A | 4 arcsec or higher | 450mm |
|
| B | 6 arcsec of higher | 300mm |
|
| Y | 30 arcsec or higher | 70mm |
|
Remarks: The minimum focal length accually depends on the camera spec.
Please read the spec sheet of your camera.
spec of the major cameras
| CCD size | conversion factor of f | names of cameras
|
full size array
36mm x 24mm | 1.0 | Canon1Ds, 5D
NikonD3 and later
SONY alpha900
|
APS-H array
28.1mm x 18.7mm | 1.3 | Canon1D series (other than 1Ds and 1DX)
|
APS-C array
23.4 x 16.7mm | 1.6 | Canon kiss (7D, 60D, 50D etc.)
|
| 1.5 | SONY α(other than alpha-900)
Nikon D
|
Four Thirds system
17.3mm x 13mm | 2.0 | Olympus E
|
copyright
After the observations, the collected images are shared by all members.
So we can be used each other
without any noticication to the origina copyright holder.
For this, please understand the following concept.
- The person who declares to join the project before May 21
can have the same right as other members
even if he/she will fail to take the
eclipsing images due to weather condition or machine trouble etc.
- You can keep your copyright for the original image itself.
However, if some members want to make a picture or movie using
the image taken from more than two locations,
he/she can use the images as a product of our project.
In the latter canse, please show "(c) GEE2012, 2012"
as the copyright.
In this case, no notification to the original copyright holders
is required.
Please ask us, if you have a critial case.
Current observation sites
Please watch the map from here.
Contact us
Please send an e-mail to
milkyway.sci.kagoshima-u.ac.jp
We can accept the message after May 21.
The contact e-mail should contain
- Your name:
- your postal address:
- your e-mail address:
- location of your observation:
- observation time (in UTC or your local standard time)
- observation grade:(S,A,B,or Y. If other spec, please show it.)