I gave that a thought. You could manufacture a small "cooler" that envelops the
camera and keeps the dry ice near it but not against it. It may be difficult to
get a consistent sensor temperature though. Another thought I had was to
machine an aluminum block that attaches to the 1/4" threading on the bottom of
the amera. The block would have a circuit for liquid flow in/out. The plan was
to pump isopropyl alcohol chilled with dry ice through it.
Of course there's always something like this:
https://www.cloudynights.com/topic/506282-removable-peltier-cooler-t3i/?hl=%2Btec#entry6690008
----- Original Message -----
From: "Brian Skiff" <bas@xxxxxxxxxx>
To: az-observing@xxxxxxxxxxxxx
Sent: Sunday, July 8, 2018 11:23:51 AM
Subject: [AZ-Observing] Re: Am I nuts?
On Sun, 2018-07-08 at 10:47 -0700, Michael McDonald wrote:
OK, yes I am since I’m interested in astrophotography! :-)
But more specifically, am I nuts for even trying to do astrophotography using
a DSLR (unmodified Canon SL1) during the summer in Arizona (Chandler)?
My signal to noise ratio seems to be approaching zero. If I increase the
exposure time to overcome some of the light pollution, my background noise
goes through the roof! If I keep the exposure short, then I have no signal.
Here’s an example of one of my subs from trying to do M13 last month:
