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  #41  
Old 05-09-2023, 09:17 AM
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AstroViking (Steve)
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Looking great, Greg!
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  #42  
Old 05-09-2023, 09:19 AM
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More photos

The roll off frame which is 2 frames that roll off either together or in opposite directions.

The metal plate reinforcing for the truss is an important feature.
Its cut out using a grionder and a thin metal cutting disc from a sheet of 1.6mm galvabond plate you can get from Bunnings. I think it was 500 x 400 or so plus lots of screws. This means plenty of room for the telescope not hitting the bottom of the truss. Normally you would have a horizontal beam at wall height which the scope would hit.

Its strong too. My son hung his whole weight off this truss and it didn't budge at all.

The frame is made out of 50 x50 and 40 x 40 aluminium square section to keep the weight down. You currently can roll these sections effortlessly and smoothly a major upgrade from my last observatory where the roll off frame was a real problem. That was with treated pine. Metal is far superior in this application. Timber is not strong enough, is heavy and can give a bit over time.

My other observatory has a surprisingly heavy flat roof made of treated pine and Kliplok roofing. Its a bit hard to opena nd close but that suits the area which can be bombarded with very strong winds.

Greg.
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  #43  
Old 05-09-2023, 12:17 PM
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My son hung his whole weight off this truss and it didn't budge at all
.
Ok, ok...I better come down and reeeally test it for you!

Mike
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  #44  
Old 05-09-2023, 01:26 PM
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Ok, ok...I better come down and reeeally test it for you!

Mike
Hehe.

Greg.
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  #45  
Old 06-09-2023, 09:27 AM
Startrek (Martin)
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Greg,
Looks like the Obs is well underway, nice solid construction too ( yep steer away from timber , termites are a problem down our way , regular inspections and treatment )
You have a lovely location too.
In regards to kayaking, my wife and I kayak occasionally at the Inlet , Burrill and other places, she’s also a member of mollymook outriggers ( casual group ) They have a group at Conjolla if you’re interested. Plenty of water ways from Conjolla to Durras, a great part of the South Coast.
Cheers
Martin
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  #46  
Old 06-09-2023, 10:36 AM
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You have a lovely location too.
In regards to kayaking, my wife and I kayak occasionally at the Inlet , Burrill and other places, she’s also a member of mollymook outriggers ( casual group ) They have a group at Conjolla if you’re interested. Plenty of water ways from Conjolla to Durras, a great part of the South Coast.
Cheers
Martin
Stop it! You're making me jealous, for what I don't have ..and sounds like what my wife has been, not so subtly, mentioning since we acquired Eagleview "house by the sea this, house by the sea that"... geeezus woman, look at that panoramic 83km view! will ya?! Maama Mia! ...



Mike
Will likely end up Martones and Gregs Neighbour....
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  #47  
Old 06-09-2023, 08:16 PM
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Greg,
Looks like the Obs is well underway, nice solid construction too ( yep steer away from timber , termites are a problem down our way , regular inspections and treatment )
You have a lovely location too.
In regards to kayaking, my wife and I kayak occasionally at the Inlet , Burrill and other places, she’s also a member of mollymook outriggers ( casual group ) They have a group at Conjolla if you’re interested. Plenty of water ways from Conjolla to Durras, a great part of the South Coast.
Cheers
Martin
My new house has a steel frame and that is comforting to know it won't burn or be affected by termites. Also very strong.

Sounds good Martin. More of a warmer weather activity though.

Observatory moved along today. I got more materials yesterday.
Today I did final work on the frame and tracks, moved the rear wheels further in so I can roll it off just a bit more to take in all the available field of view. Also installed some stops so the roll off roof will stop when rolled off.

Install some overlatches to hold the roof down when I've finished imaging. Installed some chicken wire to hold up the insulation blanket.

I out the roof on tomorrow and another board of cladding to hide the wheel and close up that gap.

Then colorbond mini orb for the gables and its install time for the pier and mount and a table.

Then install a door I bought. Then wire it up. Then painting.

I should be imaging in it within 2 weeks.
The attached photo is from Sunday. The new work done today doesn'y really look much different to this but it's work that has to be done.

Greg.
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  #48  
Old 08-09-2023, 08:27 AM
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Put chicken wire on the roof sections and roofed one half of the roof. I have 55mm insulation blanket under the roof sheets. An awkward job.

I'll probably insulate the walls at a later date.

Planning to roof the other half today and pick up some more materials.

I want to order the cappings to finish off the roof and clad the gables.

Getting closer to imaging. Once the roof is on then I can install the pier and mount.

Greg.
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  #49  
Old 08-09-2023, 10:50 AM
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I want to order the cappings to finish off the roof and clad the gables.
You know anyone who's good at doing this..? will you use copper or lead?

Mike
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  #50  
Old 09-09-2023, 08:02 AM
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Originally Posted by strongmanmike View Post
You know anyone who's good at doing this..? will you use copper or lead?

Mike
Hahaha. Yes good question.

Roof sheets are now on and about to order the cappings to finish it off.

Installing pier and some cables today. I intend to pin the pier down with 2 anchor bolts so if I have to rotate it to match south more accurately I can.
I'll install the PME mount today as well and tonight if I get all that done I'll do a rough polar alignment and if the pier is in the right orientation I'll anchor bolt it thoroughly tomorrow.

The roll off roof glides effortlessly - a first for my observatories. These wheels and the sliding gate tracks are terrific. First heard of them on this site so that paid dividends.

The combo is flexible, I can lock the 2 halves together as one and roll it off (maximum view) or split and have half roll off (similar view but a tad less).

I installed 6 overlatches to create that. Bunnings sells them. Well made and work well and easily.

I have quite a bit of left over beautiful Blackbutt engineered floor boards. I intend to lay that on the floor once everything it watertight.
It looked like I would have enough left over lovely marble floor tiles but I used them up.

Going for Australia's most luxurious observatory!

Greg.
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  #51  
Old 09-09-2023, 04:36 PM
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Some up to date photos.

Showing the roof sheets.
Showing the overlatch system
A look inside.

Greg.
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  #52  
Old 10-09-2023, 06:50 AM
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Excellent, a luxury observatory needs a bar and bar fridge

Mike
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  #53  
Old 10-09-2023, 07:33 AM
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Excellent, a luxury observatory needs a bar and bar fridge

Mike
Hehe. Perhaps a cappucino machine?

Greg.
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  #54  
Old 11-09-2023, 07:35 AM
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Hehe. Perhaps a cappucino machine?

Greg.
I've got a pod coffee maker and a microwave in mine.
I haven't used them yet, though. Scared they'll draw too much power and ruin a 3 hour session!

Neville
LSO
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  #55  
Old 11-09-2023, 09:45 AM
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I've got a pod coffee maker and a microwave in mine.
I haven't used them yet, though. Scared they'll draw too much power and ruin a 3 hour session!

Neville
LSO

That's a nice bit of luxury!

Greg.
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  #56  
Old 13-09-2023, 10:18 AM
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Hey Greg, in the photo of the observatory showing the window and closed roof, what's the box shaped object, with the circles (?) on the top, to the left on the outside of the house?

Mike
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  #57  
Old 14-09-2023, 08:10 AM
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Looks like a very large split-system heating/cooling unit to me.

V.

Quote:
Originally Posted by strongmanmike View Post
Hey Greg, in the photo of the observatory showing the window and closed roof, what's the box shaped object, with the circles (?) on the top, to the left on the outside of the house?

Mike
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  #58  
Old 17-09-2023, 10:16 AM
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Yes its a reverse cycle ducted air condtioner for the house. Behind the observatory is a 4500litre water tank that takes rainwater and services the toilets and washing machine.

I built a neat little flat pad next to my observatory at my dark site this week.
It has a really well made pier that one of the members here made for me from Perth as a prototype. Very solid.

I'll primarily use this pad for an iOptron CEM70 mount that I have gone through setting up (firmware, debugs etc etc - new gear same story).
I now have that mount up and running. I plan to use AP130 F4.5 and CFF 105 F6 on this mount.

Next time there I hope to be very productive imaging wise. 4 clear nights this week went to waste.

Greg.
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  #59  
Old 17-09-2023, 07:52 PM
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Are those A/C fans likely to affect local seeing..?

Mike
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  #60  
Old 17-09-2023, 09:08 PM
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I donít think so as I will be mostly pointing away from them,
but itís something to consider.

Greg

Last edited by gregbradley; 18-09-2023 at 11:42 AM.
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