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Old 04-02-2024, 09:47 AM
Cam99 (Campbell)
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Yet another observatory build

Just starting this thread as I am sure I will need more advice. Thanks to Neville at Lonely Spoon for letting me inspect his setup for inspiration and ideas.
I live in the bush west of the NSW Central Coast so not perfect conditions but it will have to do. Our paddock floods so the observatory needs to be at least 1.5m up to keep dry if situated with a reasonable arc of sky to view. Will need remote power which I plan to supply via battery and a couple of repurposed solar panels. Roll-off roof not supported by management due to footprint, so a dome it is.
A bit slow getting out of the ground with a progress pic here if I can work the upload. Started just before Christmas.
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Old 04-02-2024, 09:51 AM
LonelySpoon (Neville)
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And so it begins...

It's all upwards from here, Campbell, until you're looking out through the top!

Cheers,

Neville
LSO
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Old 04-02-2024, 09:55 AM
Cam99 (Campbell)
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3D printed supports for dome ring?

I printed these as something of an experiment (PETG, fairly solid infill). They support roller skate bearings sitting radially on a 34mm rolled steel tube - which will be attached to the underside of the dome ring.
I was going to use Aluminium angle, but the geometry is not optimal to clear the peak of the angle.

They look pretty solid in printed plastic but just wondering if anyone out there has tried this - and what filament did you use?
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Old 09-02-2024, 05:34 PM
GBK (Kevin)
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I'll be watching this with much interest. Good luck Campbell
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Old 11-05-2024, 09:58 AM
Cam99 (Campbell)
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Slow progress but weatherproof at last

Pity about the rain but hoping for better weather when back from a trip in a few weeks. Will be exciting to actually get some optics installed.


I am very impressed by the occasional blog mention of observatories built in as little as a week. Clearly I have spent too much time head scratching.


Next to automate the dome rotation. I am thinking 3d printed gears, perhaps with the lonely spoon option of a plywood ring gear if the plastic cannot cut it.
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Old 24-06-2024, 07:34 PM
MTregz (Michael)
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That's coming along nicely! I'll be interested to see how this turns out. What are you going to do to control humidity?
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Old 25-06-2024, 09:41 AM
Cam99 (Campbell)
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Thanks Michael. I have been keeping an eye on the dew point overnight with no obvious condensation to date, but it is a big risk, I agree. I have not got around to setting anything up yet but am thinking about leaving the scope under a cover and adding a small heat pad based heater to the pier to keep the temperature under that cover a degree or two above ambient. wrapping a dew heater around the pier and running it overnight after the scope is parked is another thought.


How about you? Have you implemented any solutions for condensation?
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Old 26-06-2024, 10:18 AM
Leo.G (Leo)
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That's an impressive build. All you need is one of those swamp boats to get to it when it's high tide.


https://external-content.duckduckgo....eeb&ipo=images


Do you have any sort of isolating vibration reducing rubber between the flooring and the pier?
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Old 30-06-2024, 11:30 AM
Cam99 (Campbell)
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Quote:
Originally Posted by Leo.G View Post
That's an impressive build. All you need is one of those swamp boats to get to it when it's high tide.

Do you have any sort of isolating vibration reducing rubber between the flooring and the pier?

The pier is independent of the floor, of course. I have tried to close the small gap with some foam rubber. And the swamp boat looks great but I may have to settle for a lowly kayak!
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Old 01-07-2024, 10:38 AM
Leo.G (Leo)
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I have a kayak or 2.
Foam rubber will be great as a seal and keep cold from creeping up.

I only asked as I've seen others where floor and pier were all connected and vibration became a big problem.
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