Total Solar
Eclipse
29 March 2006
Gundogdu
- Turkey
A Pixels & Cassoulet expedition !
Left, the wide-field experience (400 mm lens + Canon 5D), right, the
spectroscopy experience (Canon 24-70 + Canon 350D).
The
fisheye experience (Peleng 8 mm & Canon 10D).
Transit of the moon umbra
Fisheye
lens Peleng 8 mm stopped at f/8 - Canon EOS 10D DSLR - ISO 400 - Expoure: 1/90
s. A new image each 10 seconds.
The movie
Click
here for download file fisheye.mov (2.4 Mb)
Click
here for download file fisheye2.mov (better quality - 4.2 Mb)
Left:
second contact, mid: the totality, right: third contact.
The third contact
Peleng
8 mm fisheye + EOS 10D
The
totality.
7 seconds before third contact.
8
seconds after third contact.
60
seconds after third contact.
4
minutes after the third contact.
The second contact
Canon
lens EF 400 mm 1:5.6 L (used at f/5.6) - Canon EOS 5D DSLR - ISO 50.
Exposures
of 1/200 s at ISO 50 with a linear polarization filter in place (nearly absorption
of 50%)
Click
for display the images at its original size
Inner corona near the time of second
contact
8 x 1/20 s + 8 x 1/3
s (polarization sequence)
A radial filter is used for enhance the contrast
(Iris implementation)
Wide-field image
Canon
lens EF 400 mm 1:5.6 L (used at full aperture) - Canon EOS 5D DSLR - ISO
50.
Inner corona: Stack of 8 x 1/20 s exposures through a linear polariser
- rotational gradient processing.
Outer corona: Stack of 2 x 2 s + 2 x 1
s exposures (no optical filter) - The diffuse corona is removed (fitted by a
Lorentzien function).
Photosphere image incrustation: 1/8000 s through an
Astrosolar ND=3.8 film (image taken some minutes before first contact).
The
saturated part of the image (non-valid data) is masked with a dark disk.
Small
(1096 x 730)
Medium (2193 x 1460)
Large
(4386 x 2920)
Field stars identification
The
scale of the image is of 4.2 arcsec/pixel
Large
(4386 x 2920)
Detail
of a rectilinear plume.
Image of the
moon surface
Canon 400 mm lens + Canon
EOS 5D - 6 seconds exposure at ISO 50.
Mid-exposure start 15 seconds
only before the third contact (the right side of the image shows some bloom).
Polarization experience
Measure
of the sun's corona polarization
For details, click
here
Polarization
degree of the corona.
Spectroscopy experience
Canon
lens 24-70 mm 1:2.8 L used at f/4 + Canon EOS 350D (ISO 100). Grating: Jeulin
300 g/mm in front of the objective.
Left, zero order. Right, first order. Exposure: sum of 3 x 1/30 s. The green line Fe XIV at 5303 A dominate the coronal emission.
Second order spectrum. Exposure:
sum of 3 x 1/4 s. The green line at 5303 A (Fe XIV) is the principal feature.
The small dot are from the spectral emission of the chromosphere.
See also
the 1999
spectrum.
Le
groupe Pixels & Cassoulet à Istambul. Dernier jour du voyage !
De gauche
à droite, Pierre Thierry, Alain Klotz, Christian Buil, Valérie Desnoux, Michelle
David, Raymond David, Michel Pujol, Robert Delmas.
Sur la gauche, le Bosphore
et la Grande Mosquée.
See also:
The Valérie
Desnoux page
The Alain
Klotz page.
