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Chris Schroeder
Postmaster
Reged: 12/11/04
Posts: 6561
Loc: N.E. WI Sky Glow
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Looks great, thanks for sharing the photos with us.
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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
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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!
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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!
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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: 1410
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!
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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...
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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!
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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: 1192
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!
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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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