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Equipment Discussions >> Observatories

Pages: 1
MHamburg
scholastic sledgehammer
*****

Reged: 06/21/06

Loc: Brooklyn, NY/Berkshires, MA
Melting Snow and Ice
      #5608056 - 01/06/13 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


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Mirzam
Post Laureate
*****

Reged: 04/01/08

Loc: Lovettsville, VA
Re: Melting Snow and Ice new [Re: MHamburg]
      #5608182 - 01/06/13 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


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MHamburg
scholastic sledgehammer
*****

Reged: 06/21/06

Loc: Brooklyn, NY/Berkshires, MA
Re: Melting Snow and Ice new [Re: Mirzam]
      #5610220 - 01/07/13 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


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stmguy
sage


Reged: 10/11/12

Loc: Western NH
Re: Melting Snow and Ice new [Re: MHamburg]
      #5611677 - 01/08/13 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.com/Mr-Heater-Single-Tank-Top-Propane/dp/B00005LEXJ/ref=sr_...

Norm


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MHamburg
scholastic sledgehammer
*****

Reged: 06/21/06

Loc: Brooklyn, NY/Berkshires, MA
Re: Melting Snow and Ice new [Re: stmguy]
      #5613301 - 01/09/13 08:43 AM

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


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stmguy
sage


Reged: 10/11/12

Loc: Western NH
Re: Melting Snow and Ice new [Re: MHamburg]
      #5613672 - 01/09/13 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


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MHamburg
scholastic sledgehammer
*****

Reged: 06/21/06

Loc: Brooklyn, NY/Berkshires, MA
Re: Melting Snow and Ice new [Re: stmguy]
      #5614120 - 01/09/13 05:22 PM

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


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stmguy
sage


Reged: 10/11/12

Loc: Western NH
Re: Melting Snow and Ice new [Re: MHamburg]
      #5614994 - 01/10/13 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 !

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MHamburg
scholastic sledgehammer
*****

Reged: 06/21/06

Loc: Brooklyn, NY/Berkshires, MA
Re: Melting Snow and Ice new [Re: stmguy]
      #5617620 - 01/11/13 05:18 PM

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


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stmguy
sage


Reged: 10/11/12

Loc: Western NH
Re: Melting Snow and Ice new [Re: MHamburg]
      #5620298 - 01/13/13 08:49 AM

sorry just saw this

http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5466873/page...

or here for lots of pics
https://picasaweb.google.com/ntfredrick/ObservatoryConstruction#

Norm


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MHamburg
scholastic sledgehammer
*****

Reged: 06/21/06

Loc: Brooklyn, NY/Berkshires, MA
Re: Melting Snow and Ice new [Re: stmguy]
      #5624852 - 01/15/13 05:37 PM

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


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stmguy
sage


Reged: 10/11/12

Loc: Western NH
Re: Melting Snow and Ice new [Re: MHamburg]
      #5625760 - 01/16/13 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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