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ESPaDOnS: picture gallery http://webast.ast.obs-mip.fr/magnetisme/espadons_new/gallery.html
ESPaDOnS
picture gallery
A large number of photographs (mostly taken by Jacques Cadaugade from OMP) were collected during the various integration
phases of ESPaDOnS. A small selection of them is presented below. Click on the small images to enlarge them.
The Cassegrain unit
The Cassegrain unit as a whole is shown on the right. Detail
views of specific subunits or individual components are
presented below:
close-up view of the upper part
(calibration/guiding module) with both drawer 1
(atmospheric dispersion corrector/adc) and drawer 2
(calibration wheel) visible; the tilted mirror hosting the
instrument entrance apertures is visible at the bottom
of the image, as well as the viewing/guiding channel
(dark horizontal cylinder with attached folding flat
mirror on the left of the image);
another detailed view of the upper
part, with the tilted mirror and entrance aperture at
the bottom of the image and the head of the
guiding/viewing channel turret on the left of the image;
optical components are inserted (and visible) in the
calibration wheel immediately above the tilted mirror;
detailed view of the viewing/guiding camera mounted at the other end of the viewing/guiding
channel; this camera, designed and assembled by FingerLake Instrumentation (MaxCam series), includes a Peltier
cooled 1kx1k eev ccd with 0.013mm square pixels (type ccd47-10, class 1);
close-up view of the tilted mirror hosting the two instrument entrance apertures; the small
central hole (0.22mm) is for collecting photons from the star of interest, while the larger hole on the side (0.3mm) is for
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