Optic: Canon 400 mm f:5.6 L.
Camera: Modified Baader Canon 350D (Ha pass filter - see
here) at ISO800. Processing: Iris
software. Exposure: 40 minutes (8 x
5 minutes). Location: Pic du Midi (altitude 2860 meters, french Pyrénées).
Date: August 30.92, 2006.
The central part of the observed field
The full frame (click on the
image for enlarge)
A negative view version (the
red layer only)
Click here for display the image at the original size (3450 x 2310 pixels)