[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:
http://www.backyard-astro.com/equipment/accessories/dewheater/dewheater.html#Anchor-49575
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.
Bob
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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