[AZ-Observing] Re: Need a pointer please - thank you

  • From: Bob Christ <bchrist@xxxxxxxxxxxxxx>
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Sun, 25 Jan 2009 09:21:45 -0700

Wayne, the design is not mine.  I found a fair number of designs on  
the Web and the link to the following one made the most sense to me:


Other designs provide high frequency pulse widths that can play havoc  
with a scope's computer if the dew controller and scope are run off of  
the same battery (my intent).  I have communicated with the designer  
of the circuit I'm using and he runs his LX90 & controller from a  
common battery without experiencing problems.

His design provides enough oooomph to heat both the objective and  
eyepiece - just wire the output to two RCA jacks (typically used on  
dew heater strips) in parallel.


Quoting "Wayne  (aka Mr. Galaxy)" <mrgalaxy@xxxxxxxx>:

> 15480 Empire Rd.
> Benson, AZ 85602
> hm ph: 520-586-2244
> Bob,
> I was wondering if your design is original to yourself and, if so,  
> would you share it? Otherwise, is there a place on the web to find a  
> design?
> Even though we live in the "dry" desert, there are times when it  
> would be nice to heat up the eyepiece. I was going to buy a  
> resistance strip from the guy in Canada, but his system seemed  
> cumbersome and not appropriate to my needs.
> Clear skies,
> Wayne (aka Mr. Galaxy)
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