(meteorobs) Heat required to prevent dew in a box for allsky camera

[Stuart McDaniel]

I have seen people attach these disposable hand warmers to their camera or you can purchase a dew heater for a telescope and use it. Just something to heat it above dew point and above freezing.

Stuart McDaniel
.....(i.mobile)......



> On Nov 3, 2014, at 17:43, bob alongi <bob71741 at yahoo.com> wrote:
> 
> Depending on where you live, just the heat from the camera and ancillary equipment should be enough to prevent dew formation. Chris Peterson, from Colorado, which to my recollection gets pretty cold at times, does just that "...a fan at the base of the enclosure that circulates waste heat from the camera and its power supply up into the protective dome to help prevent dew and frost from accumulating."
> web site: http://www.cloudbait.com/projects/allskycamera.html
> 
> 
> --------------------------------------------
> On Mon, 11/3/14, rmbehr at istar.ca <rmbehr at istar.ca> wrote:
> 
> Subject: (meteorobs) Heat required to prevent dew in a box for allsky camera
> To: meteorobs at meteorobs.org
> Date: Monday, November 3, 2014, 11:00 AM
> 
> Koen, I'm interested in the heating
> method you use in the box for the  
> allsky camera to prevent dew.  During summer I often
> put my camera  
> (old Canon Rebel XT with wide angle lens) on a tripod and
> set it  
> outside for a couple of hours hoping to catch meteors, and
> have been  
> successful a few times.  I live in Ontario, Canada, so
> the summer  
> season is short.  I have made a small box with a window
> that can mount  
> onto a tripod, that has worked well.  I was thinking of
> building some  
> kind of box with some kind of heat that will prevent the dew
> from  
> steaming up the window and keep the camera above
> freezing.  I'm not  
> knowledgeable when it comes to electronics, I was thinking
> along the  
> lines of building the box big enough for a small heating
> pad, and have  
> the camera on a shelf above the pad.  How much heat is
> usually  
> necessary?
> 
> Any thoughts anyone?
> 
> Rose-Marie Burke
> 
> _______________________________________________
> meteorobs mailing list
> meteorobs at meteorobs.org
> http://lists.meteorobs.org/mailman/listinfo/meteorobs
> 
> _______________________________________________
> meteorobs mailing list
> meteorobs at meteorobs.org
> http://lists.meteorobs.org/mailman/listinfo/meteorobs