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

[James Beauchamp]

Dude...  Ditto on the bugs.  Little bas***ds.  It's like they exploit a different weakness every season.  Got so bad I was thinking about how to set up an automatic dry air purge with a wiper. 

Funny you mention the container.  Found 4" aluminum pipe, disks, and plates that fit perfectly together.  Next version will be airtight.  Just need to find a camera.

Sent from my iPhone

On Nov 23, 2014, at 8:36 AM, Jim Wooddell <jim.wooddell at suddenlink.net> wrote:

LOL, James!  "Better" is subjective! We could all do it better!  X-Y micrometer camera adjustments, maintain sensor temp at  +5C and purge with nitrogen and maintain a positive pressure in container!
And a 50 cal Barrett automatic suppressed fire gun mounted on a automatic bug seeking turret to keep the darned bugs and birds off the dome!  And, we can all use better domes!

Jim

> On 11/22/2014 8:28 PM, James Beauchamp wrote:
> I have all the parts on hand to make an all aluminum one, including a better heater.  Just need to find an equivelant camera unit.  Very few options out there.
> 
> Sent from my iPhone
> 
> On Nov 22, 2014, at 7:25 PM, Jim Wooddell <nf114ec at npgcable.com> wrote:
> 
> Hi All,
> 
> I would have never designed a system like Sandia did.  However, it works
> very well with a bunch in service in many parts of the world.
> It can be improved, but I would wager any design can be improved.
> We could argue this all day long! Hard to argue with a network
> of cameras that simply works, is available to the public 24/7, etc.
> 
> Air circulation in the camera mount is good and is forced circulation
> from on side to the other.  I had reduced the temperature control
> setting at install and (knock on wood) have never had any issues.
> 
> My issue was/is with the false pretense statements made that the camera
> system is unsafe.  That's like saying your neighborhood street lights or
> the wires feeding houses are unsafe.  Just nuts with nothing I know of
> to back up the claims.
> 
> Jim
> 
> 
>> On 11/22/2014 11:01 AM, Chris Peterson wrote:
>> The Sandia design isn't the best. In fact, for a video system (as
>> opposed to the DSLR case that started this discussion) there is no need
>> for heaters at all. The electronics in the enclosure generates enough
>> waste heat to keep the dome dew and frost free under the worst of
>> conditions. All that is required is a simple internal circulation system.
>> 
>> Chris
>> 
>> *******************************
>> Chris L Peterson
>> Cloudbait Observatory
>> http://www.cloudbait.com
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-- 
Jim Wooddell
jim.wooddell at suddenlink.net
http://pages.suddenlink.net/chondrule/