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Melting Snow and Ice

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#1 MHamburg

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Posted 06 January 2013 - 10:52 AM

Has anyone tried those sets of resistance wires used for preventing ice dams on roofs for their observatories? I was wondering how they might work on an aluminum dome.
Michael :question:

#2 Mirzam

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Posted 06 January 2013 - 11:56 AM

I would think that with an aluminum dome a heater placed inside would cause most of the snow/ice to slough off. Rotating the slit to face south might help as well (assuming sunshine).

JimC

#3 MHamburg

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Posted 07 January 2013 - 01:12 PM

Even with the slit facing south what happens is that snow and ice build up on the upper track of the shutter tending to freeze the shutter shut as well as adding tremendous weight to the dome. Hard to rotate! Already this season we have had over 2' of snow.
Michael :tonofbricks:

#4 stmguy

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Posted 08 January 2013 - 10:26 AM

I fired up one of those lpg catalytic heaters in the OBS and the snow slid right off . Nice for working out in the OBS also ! Just make sure you have fresh air coming in.
http://www.amazon.co...LEXJ/ref=sr_...

Norm

#5 MHamburg

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Posted 09 January 2013 - 08:43 AM

I'm curious if you are dealing with air currents from the heater.
Michael

#6 stmguy

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Posted 09 January 2013 - 12:49 PM

I just use it when I'm working out there, as a side benefit it melted the snow enough so it slid off (most of it anyway)

Norm

#7 MHamburg

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Posted 09 January 2013 - 05:22 PM

Oh! You mean working out as in a gym or working out(side), but definitely not observing??
Michael

#8 stmguy

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Posted 10 January 2013 - 07:53 AM

Ah no...working on the observatory , lots still to do on it..never enough time...work gets in the way :) But I'm thankful I'm still working, it sure helps pay the bills !

#9 MHamburg

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Posted 11 January 2013 - 05:18 PM

I would love to se some pics of your pride and joy.
Michael

#10 stmguy

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Posted 13 January 2013 - 08:49 AM

sorry just saw this

http://www.cloudynig...5466873/page...

or here for lots of pics
https://picasaweb.go...ryConstruction#

Norm

#11 MHamburg

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Posted 15 January 2013 - 05:37 PM

Many, many thanks. It seems that you beautifully solved the many engineering challenges you faced. Now to tackle the weather. . .
Michael

#12 stmguy

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Posted 16 January 2013 - 08:31 AM

It has been challenging but it IS usable and I've used my telescope much more now that I don't have to set it up each time. I'm in the process of painting the inside dark blue now as time permits
Thanks
Norm






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