[AZ-Observing] TEC Cool Down Effect on a DSI Pro

I have had a chance to do some experimenting with  simple TEC/Heat 
Sink/Fan on a DSI Pro. The referenced image is a graph of the 
Histogram counts for a 1 second exposure starting out at an ambient 
temperature of about 80 deg F.

As can be seen the ADU counts start out around 21,600 and after about 
5 minutes are leveling off around 7,000. The graph can be seen at:

http://www.hposoft.com/CoolDown.jpg

I have tried to take darks before and after cooling, but while there 
is certainly an improvement it is not as dynamic as watching the ADU 
counts go down.

For a few dollars (under $50 total including power supply) and only 
modifying the DSI by drilling two mounting hole, the camera can see a 
significant improvement.

Jeff
-- 
Jeff Hopkins
HPO SOFT
Counting Photons
http://www.hposoft.com/Astro/astro.html
Hopkins Phoenix Observatory
7812 West Clayton Drive
Phoenix, Arizona 85033-2439 U.S.A.
(623)849-5889
(623) 247-1190 (Fax)
www.hposoft.com
--
See message header for info on list archives or unsubscribing, and please 
send personal replies to the author, not the list.

Other related posts: