Specifications

AUTOSTAR CCD PHOTOMETRY 43
Wiring and Schematics
The polarity of the TEC is a bit ambiguous, but you can’t damage
it by reversing the connections. After connecting the power supply,
check to verify which side gets “hot” and place that side against
the finned heat sink (away from the camera back). Don't forget to
apply ample thermal grease between the TEC plates and the
camera back, and also to the finned heatsink.
A 12VDC fan is installed on the back of the heatsink, to draw
additional cooling air through the fins. At HPO, a 3.5 A 12VDC
supply was used, separate from the telescope power, operating
from 110VAC. For a portable setup, a 12VDC battery supply
could be used. A power indicator light, an ON-OFF switch, and a
fuse could be added, or the power supply can simply be unplugged
when the camera is not in use (as shown in the illustrations).
Figure A-8 shows drawings of the mechanical modification and an
electrical wiring schematic, respectively.
Figure A-8. Mechanical Modification Drawing
and Electrical Schematic.