Uncooled and cooled darks of 500D

shirox · Post by **shirox** » Mon Sep 19, 2011 7:55 pm

Thanks to a bro for giving me his priceless peltier cooler box,
i was able to "power up" my Canon 500D.
Below are the darks taken at 1600iso 10mins

Uncooled 28.9 degree Celsius

Cooled 15.7 Degree Celsius

Image of how the box looks like

Bergkamp_ · Post by **Bergkamp_** » Mon Sep 19, 2011 8:04 pm

nice~! =) alot lesser noise!

Clifford60 · Post by **Clifford60** » Mon Sep 19, 2011 9:33 pm

Great improvement, any condensation? can it cool even lower?

shirox · Post by **shirox** » Mon Sep 19, 2011 9:46 pm

so far tested on site is around 9 degrees lowest. The box came with a port for blowing and sucking dry air that was pump thru a drying agent pump that is complimentary from the bro too, and its directed to the sensor area. Tested no condensation problem To go lower would mean a bigger peltier and bigger heatsink and bigger fan and higher consumption ba....

I love the box!

Gary · Post by **Gary** » Mon Sep 19, 2011 9:49 pm

Very nice! The cool air at Punggai should cool it even further!

Clifford60 · Post by **Clifford60** » Mon Sep 19, 2011 9:58 pm

Next, at least a solid wide field photo from you, haha

cataclysm · Post by **cataclysm** » Mon Sep 19, 2011 10:41 pm

Looks like your newer breed of canon cam responds better to cooling than my good old 350D. Way to go Bro, must have collected a wealth of darks by now, lol. [smilie=victory.gif]

shirox · Post by **shirox** » Mon Sep 19, 2011 11:10 pm

haha yesss yesss just completed my darks library hee

shirox · Post by **shirox** » Mon Sep 19, 2011 11:12 pm

last temp reading is 12.28 degrees ambient 28 degrees

Post by **rcj** » Mon Sep 19, 2011 11:47 pm

well done bro! a suggestion though: the improvements in cooling could be made more obvious (through the reduction of specific noise structures like colour, lesser hot pixs, etc) if both dark samples could be equally stretched... it would be interesting to see how much for example colour noise has been reduced. Did noticed during last session's quick processing that the cooled light frames had substantially lesser colour noise.