Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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Hi all,
this is a story of building an observation shelter KuuMaja (finnish for MoonHut), which is located in Toijala, Finland approximately at 61 degrees 09 minutes Norther latitude and 23 degrees 50 minutes Eastern longitude, at an elevation of 104 meters above the sealevel.
The aim was to construct a simple shelter to get rid of the light pollution due to the direct and close glow of several streetlights shinging from the North onto the yard.
I also wanted to have decent protection from wind, have the rig ready for quick sessions and be able to observe the most of the skies (i.e not to have a dome) and deliver fast tempering for the scope.
The hut also had to be on the backyard and the roof had to be quickly opened and closed. The northern side of the hut should allow to see the Stella Polaris for appropriate Polar alingment, yet protect from the streetlights as was mentioned earlier.
I have clear vision about from Southeast to Northwest, over trees and houses upward from about 30 degrees from the horizon.
The KuuMaja (MoonHut) is 2,5 x 2,5 meters and the maximum height on the Northern wall is 2 meters. The South-tilted roof is made of transparent plastic material, and it slides up and down (on rails down into the South), hanging on a sliding rails system.
The structure is made of lumber preprocessed (impregnated) to be water resistant. The walls and the floor are made of filmlayered plywood board, which is also water resistant.
At this point my EQ6 Pro –tripod is simply mounted on concrete slabs resting on a sand bed, thus having no contact with the structure to prevent any vibrations from transferring into the scope when observing.
The stucture is made in a fashion it breathes under the roof, so I might experience minor amount of snow pouring in occasionally, but this should not be a problem (knock-knock).
Also the ventilation is important, as the transparent roof gathers considerable amount of warmth into the hut especially during the summer months.
In the following messages I'll share with you 17 pictures to present the ida of the KuuMaja (MoonHut). It took some 70-80 hours to build, and of course required permission from the neighbours and authorities to be built. There are also a few closeups on the building of the sliding system just in case somebody would benefit from the ideas.
Be well all!
First, the foundations...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
Edited by Mare Nectaris (08/23/08 06:36 AM)
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... the floor structure
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... sandbed and concrete slabs for the tripod...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... ready floor (later to be cut for the tripod to be mounted properly)...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... skeleton ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... the walls ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... Southbound rails for the roof ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... sliding roof ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... detail of sinking the slider's bolt into the roof sled ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... sliders bolt in place on the sled ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... locking the sinked bolt with plywood ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... Nut is on ... and I'm quite nuts already
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... left roof sled (seen from the Southside) with slider attached to the assembled bolt (this will be hanging on the rails supporting the roof letting it slide). The support on the sled is only temporary in this pic - it was later built from 5 inch plank to be on the safe side ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
Edited by Mare Nectaris (08/23/08 06:50 AM)
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... sliding roof ready and closed ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
Edited by Mare Nectaris (08/23/08 06:52 AM)
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... closed roof seen from inside the Hut ...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... KuuMaja (MoonHut) is born
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... and the roomer has arrived - or maybe even the resident!
Thanks folks for witnessing the happy occasion!
Be well all!
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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David Pavlich
Postmaster
   
Reged: 05/18/05
Posts: 8683
Loc: Mandeville, LA USA 30.22 X 90....
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Very innovative! I like the way you worked with the tripod to keep it isolated from the floor. 
David
-------------------- Proud Member; PAS NOLA,
"If we knew what we were doing, it wouldn't be called research..."
A. Einstein
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csa/montana
Den Mother
   
Reged: 05/14/05
Posts: 40307
Loc: montana
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Very, very nice! A simple, but very effective design that will work very well for you!
Thanks so much for sharing the great photos taking us on the journey with you.
Now, enjoy!
-------------------- Carol
AstroTech 16" Dob (Thanks ASTRONOMICS!)
Vixen 80MF/AstroTech Voyager
Masuyama's 7.5, 15, 25W, 35mm,
Pentaxes; 5XW, 7XL, 10XW.
14mm Meade 4000 UWA
TV Panoptics; 22, 35
DreamCatcher Dobservatory, #2
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Galaxyhunter
Pooh-Bah
Reged: 01/02/06
Posts: 1256
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Nice job on your OBS 
Quote:
The stucture is made in a fashion it breathes under the roof, so I might experience minor amount of snow pouring in occasionally, but this should not be a problem (knock-knock).
Blowing snow WILL find its way through the smallest of openings. You might want to get some brush stips to seal the movable roof to the stationary building. Its just a thought.
-------------------- Carl
My lousy skies at Hawkeye Observatory
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Chris Schroeder
Postmaster
   
Reged: 12/11/04
Posts: 6566
Loc: N.E. WI Sky Glow
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Looks great, thanks for sharing the photos with us.
-------------------- Chris
Mallincam Color Hyper Plus
10" DSH with SC DSC, CPC 800 XLT
M110 Doublet ED, AT 102Achro, ZS80FD 10th Anniv, ZS66SD, PST
CG5-AGT, EZ-Touch, Voyager
POD XL3 http://POD.SchroederCity.com
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Mick Hyde
Pooh-Bah
   
Reged: 11/22/06
Posts: 1126
Loc: Swindon, UK
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Nice work Timo.
You may want to change the design of the roof later on. I had the same clear plastic like yours, and my shed heated up really bad in the summer. In fact the plastic buckled. So what I did was put some white backed hardboard underneath to cut out the suns rays.
Worked a treat.
New roof Old Roof
-------------------- Mick.
http://astromick.blogspot.com http://mickhyde.googlepages.com Swindon CSC
Celestron 9.25 XLT, Takahashi SKY-90, Canon EOS 50D, DMK21AF04AS, SKYnyx 2-0M, CGE mount.
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usnao95
super member
Reged: 01/03/08
Posts: 155
Loc: Port Richey, Fl
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I need to take some pictures of the floor of my observatory, i did the same thing, i wanted to avoid have a permenit concrete peir, instead of the legs going to the ground i cut the holes in the flooring and placed 5 20lbs pavers underneath the floor at all three legs, mostly due to the fact that without them the mount sits close to the floor,and it kinda keeps little critters from crawling up the mount, nice job on your roll-off!
-------------------- Eric
Florida
Meade 8" 2080
Orion ShortTube 80 400mm
LXD75 w/autostar goto
Nikon D70 DSLR
Meade DSI Pro
Logitech QuickCam Pro 9000
Meade f/ 6.3 focal reducer
JMI motor focus<---best investment so far
HP ZD8000 laptop
many filters
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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Thanks all for your kind comments and suggestions 
The snow issue is really an interesting one - and the overheating is also an issue. Therefore I kinda tried to compromise with the both issues letting the roof breathe a bit. - One can also install some air conditioning through ventilators on the walls.
Be well all!
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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stars_in_my_eyes
scholastic sledgehammer
Reged: 03/24/08
Posts: 803
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Quote:
Nice work Timo.
You may want to change the design of the roof later on. I had the same clear plastic like yours, and my shed heated up really bad in the summer. In fact the plastic buckled. So what I did was put some white backed hardboard underneath to cut out the suns rays.
Worked a treat.
New roof Old Roof
I would agree with the change of the roof.
When visible light enters an enclosure and stikes a surface, it is reemitted as a lower wavelength..in this case infrared...that is why interiors of cars can get so much hotter than the outside temperature.
The translucent ceiling is a nice feature...perhaps you can place vents at the top of the walls and have the best of both worlds.
I too really like the way you did the tripod/floor installation. I will likely copy it for a portable observatory that is in works. ;<)
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Scott K
Pooh-Bah
Reged: 09/13/07
Posts: 1411
Loc: Dallas, TX & Eufaula, OK
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Quote:
When visible light enters an enclosure and stikes a surface, it is reemitted as a lower wavelength..in this case infrared...that is why interiors of cars can get so much hotter than the outside temperature.
Maybe he wants to grow tomatoes too! That would make the structure much more versatile! 
All kidding aside, that is a really great looking obsersvatory!
I didn't think about the hot-house effect of the roof when I first looked at it. My first thought was "wow, it has to be a LOT easier to work in there during the daylight hours because of all the light!"
I wonder how hot it will really get, since he's in Finland? (Sadly probably not as hot as the typical interior temperature during the summer of my rather opaque dome in Oklahoma!)
I also liked the way the tripod was installed. That's such a simple, but brilliant, solution.
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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Hi, thanks again for your comments!
Yes - the weather here in Finland permits trading between transparent roof and overheating. The bigger problem is the snow (occasionally), but the transparent plastic roof also warms in a manner it keeps the hut rather dry and ventilated while giving the snow a quick taste of Earth gravity every now and then (altough some assisting is needed).
Tomatoes - that is a fantastic idea BTW 
Be well all!
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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Hi all!
First winter for the MoonHut has well passed. - Currently we have some 22 degrees (Celsius) above zero, so I'm seriously considering to plant some tomatoes into the Hut. Believe me: it is HOT in there!
Anyhow, had pretty interesting weather during the fall and winter months, with lots of moisture, clouds and fog. For almost three months during the fall it was actually almost impossible to observe anything!
As January came, we eventually got pretty decent snowfall and temperatures well below zero (about - 20 in Celsius). Then my mount froze, so... managed to grow some patience, which never hurts 
The roof of the Hut did pretty well in clearing the snow by the mere force of gravity, temperature permitting (see the pic).
Moisture was a bit problematic, as it formed droplets of condensed water onto the inside of the roof, eventually dropping onto the floor, forming tiny puddles every now and then ...
No snow ever came into the Hut, even there were some pretty decent snowstorms there. Nor did the winds blow the roof off. - Just some dry Maple leaves found their way in, but -hey - what's a Hut without some dry leaves crackling on your feet, as the crisp Sun - almost asleep - tries to manage the short path through the fall skies...
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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... assembled today a winch to lift the roof more easily (see the pic - the winch is on the North side).
The winch seems to work pretty well. Some adjustments still have to be made, as the batten of the roof runs pretty low and occasionally tends to restrain the movement of the roof a bit.
The winch also provides locking of the roof when the roof is closed.
Be well all!
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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RobertED
professor emeritus
   
Reged: 07/11/03
Posts: 1194
Loc: Johnston, RI
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Excellent project, Mare Nectaris!!! Clear Skies and many years of Good Luck and Success!!!!
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Mare Nectaris
Pooh-Bah
   
Reged: 03/09/08
Posts: 1433
Loc: Toijala, Finland
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Thanks for your kind words 
Be well!
-------------------- Share - and you shall have it all
Timo Keski-Petäjä
CtheMoon
Observation shelter KuuMaja (MoonHut)
TAL 250K*Celestron C8-N*SkyWatcher Skymax 150 Pro*TAL1(Mizar)*EQ6 Pro SynScan*Celestron Advanced GT (CG-5 GOTO)*Baader Hyperion Clickstop Zoom 8-24*17 mm UWA-70*TeleVue BIG 2x Barlow*Celestron 2x Barlow Ultima SV Series
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