ICEINSPACE
Most Read Articles
Moon Phase
CURRENT MOON Last Quarter
38.9%
The Sun Now
Time Zones
Sydney*
8:36 pm
Perth
5:36 pm
Auckland*
10:36 pm
New York
4:36 am
Paris
10:36 am
GMT
9:36 am




Go Back   IceInSpace > Equipment > DIY Observatories

Reply
 
Thread Tools Rating: Thread Rating: 2 votes, 3.50 average.
  #41  
Old 15-08-2014, 10:05 AM
ZeroID's Avatar
ZeroID (Brent)
Lost in Space ....

ZeroID is offline
 
Join Date: May 2010
Location: Auckland, NZ
Posts: 4,615
Excellent, at least you won't have to worry about lights coming over from that side of the fence... bl00dy great light block !!
Reply With Quote
  #42  
Old 03-06-2016, 09:54 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
Question Ballarat area - how good it is for observatory?

Well, as our "dream" property in Seymour turned into a nightmare... last month we sold it and closed this particular chapter of our lives.

Now we started to look into Ballarat and surrounding areas to buy a residence.. The town itself is of right size, and has well enough support for a pair of +65yo pensioners (gas, water... doctors, hospitals, graveyards....)

Does anybody have direct experience with the area ( some time ago I had some replies from Leon about Ballarat in general, but maybe the situation changed in the last 6 years)?
Are there any suitable (elevated) suburbs for building backyard observatory?
Are there any areas to avoid (floods, LP etc.)?
Reply With Quote
  #43  
Old 03-06-2016, 10:37 AM
clive milne's Avatar
clive milne
Registered User

clive milne is offline
 
Join Date: May 2011
Location: Freo WA
Posts: 1,364
Quote:
Originally Posted by bojan View Post
Does anybody have direct experience with the area ?
The main problem with Ballarat is that summer often doesn't fall on a weekend.
Reply With Quote
  #44  
Old 12-12-2016, 09:36 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
We spend two weeks in our new property (future home when I retire) in Ballarat.

I did some measurements of the terrain and existing buildings on property... Also talked to neighbours about my future observatory, and so far there is no visible resistance to the idea of placing a dome (slightly elevated on a deck) in one of the corners of the block.
The niche with windows will go, the deck will be built as extension to the existing floor, the existing door will be access to observatory deck.
Fingers crossed...
Attached Thumbnails
Click for full-size image (Mt_Pleasant_plan.jpg)
141.8 KB160 views
Reply With Quote
  #45  
Old 19-05-2017, 11:52 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
I hope by the end of this year I will start work on my observatory in Mt Pleasant, Ballarat...
And for that job I will need a steel ring ~2.34m, made by bending ~50-70mm steel pipe, (base of the geodesic dome, which will roll on rollers).
Does anybody know of a good bending service in Melbourne or Ballarat (preferred)?
Reply With Quote
  #46  
Old 19-05-2017, 05:13 PM
ZeroID's Avatar
ZeroID (Brent)
Lost in Space ....

ZeroID is offline
 
Join Date: May 2010
Location: Auckland, NZ
Posts: 4,615
Can't help you there but glad to see you're back on track to complete your dome. Got me thinking again for a modification to my setup.
Reply With Quote
  #47  
Old 19-05-2017, 05:49 PM
billdan's Avatar
billdan (Bill)
Registered User

billdan is offline
 
Join Date: Mar 2012
Location: Narangba, SE QLD
Posts: 799
Bojan, you could try exhaust pipe outlets in Ballarat, they usually have pipe bending machines in their workshops.
Reply With Quote
  #48  
Old 20-05-2017, 09:18 AM
Boozlefoot
I like to watch........

Boozlefoot is online now
 
Join Date: Nov 2016
Location: Devil's Hole Observatory
Posts: 194
Hi Bojan,
I used to work in a bearing centre and we had a customer who made massive solar panel tracking units for Telstra. He simply affixed light British Standard chain to the lower ring of the unit and drove the unit as per Garlitz's drive. The chain comes cheapest in a 10ft box with a joiner link. No bending, curves naturally, inexpensive, off the shelf. Tack welded every 3rd/4th link. "BS 06B-1" is heaps strong enough for the job, and a simple plate sprocket also readily available. (We went through the rack option first then came up with this method)

[QUOTE=bojan;968234]Looks good..

I was also thinking about rack (will have to be curved first.. if possible at all), normally used for sliding doors ( I have it on my gate)..

And.. I have one old, spare motor driver unit.

Last edited by Boozlefoot; 20-05-2017 at 09:36 AM. Reason: Addition
Reply With Quote
  #49  
Old 26-05-2017, 08:44 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
Excellent idea, thank you!
Reply With Quote
  #50  
Old 28-05-2017, 08:25 PM
Tandum's Avatar
Tandum (Robin)
Registered User

Tandum is offline
 
Join Date: Apr 2008
Location: Carindale, Brisbane.
Posts: 4,087
A google for Ballarat pipe benders gives -> http://www.plinius.com.au/
Reply With Quote
  #51  
Old 29-05-2017, 06:09 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
Quote:
Originally Posted by Tandum View Post
A google for Ballarat pipe benders gives -> http://www.plinius.com.au/
Hi Robin, thank you.... I know about them, they are near our place... found them last year in local papers. Actually I went there sat before last and talked to a young lad (he dropped in the office to get something) and I left my phone number, but noone contacted me since ... it seems they are not interested or just careless because they never responded to 2 or 3 of my messages left on website last year.
True, I never tried phone but still....
Last year I have an offer from bend.com.au (they are in Melbourne, Clayton area). Most likely I will go with them if they confirm the quote, transport to Ballarat will be a bit of a problem, but not a show-stopper.

Last edited by bojan; 29-05-2017 at 08:27 AM.
Reply With Quote
  #52  
Old 05-06-2017, 07:36 AM
ChrisM's Avatar
ChrisM
Sandy Ridge Observatory

ChrisM is offline
 
Join Date: Mar 2008
Location: Gippsland, VIC
Posts: 693
Pipe bending

Hi Bojan,

I had a 12 m length of 75 x 75 x 6 mm angle iron bent by Uneek Bending in Dandenong South. The resulting ring (3.6 m dia) was too large to trailer home in one piece, so was cut in half for transport then welded on site. From memory, supply and bending cost me <$300 albeit nearly 10 years ago. Uneek Bending are specialist benders used by heavy industry in the Latrobe Valley.

Also check out Rod Stubbings website: https://rodstubbingsobservatory.wordpress.com/dome/

I can't recall how he bent the pipe (your turntable design sounds identical to Rod's) but I'm sure that he'd be happy to advise you. There is a good picture on the home page. I think his dome is about 3.5 m dia and it turns like a dream.

Good luck, Chris
Reply With Quote
  #53  
Old 05-06-2017, 10:09 AM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
Chris,
Thank you for the link, I will look at it.

At this point, I intend to go with Smithweld (they are in Tottenham), they quoted $140 for bending of two halves, I need to supply the pipe (65NB).
So far so good...
Reply With Quote
  #54  
Old 10-07-2017, 12:29 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
I am looking into decking...

And I think I found an interesting alternative to conventional approach with treated pine, the deck material is made of recycled plastic.

http://www.enduradeck.com.au/?gclid=...FUpWvQodSUMEng
http://www.replas.com.au/

Using the galvanised piers, 10m2 could cost a bit above 1k$.

Anyone has some experience with this?
Reply With Quote
  #55  
Old 11-07-2017, 09:08 AM
Visionary's Avatar
Visionary (David)
Registered User

Visionary is offline
 
Join Date: Jan 2015
Location: Sydney
Posts: 335
Quote:
Originally Posted by bojan View Post
I am looking into decking...

And I think I found an interesting alternative to conventional approach with treated pine, the deck material is made of recycled plastic.

http://www.enduradeck.com.au/?gclid=...FUpWvQodSUMEng
http://www.replas.com.au/

Using the galvanised piers, 10m2 could cost a bit above 1k$.

Anyone has some experience with this?
Bojan,

We have used recycled plastic/wood decking. It's a wonderful material, entirely without grain, or faults of any kind. Cutting and forming the material is a decided pleasure, the only limitation is your own imagination as there is no chipping, splitting or warping. The more obvious characteristic of "timelessness" ie: the fact no surface treatment is required to preserve the product is a huge benefit.
Our deck is built on pillars as our backyard falls away sharply, the deck is absolutely rock solid! The plastic/wood is heavy and dense and transmits vibration poorly, I believe it would be a brilliant candidate for an Ob.
At Bunnings and other retailers of the product you can source reasonably sized samples of the product, however, I would recommend you to buy a couple of meters of assorted product and simply have a play around with the product. You will quickly discover the materials virtues and establish the products bonafide's as an anti-vibration material.
The clearest evidence of the utility of the product is that I have kept every offcut and use the offcuts for every conceivable problem.
Reply With Quote
  #56  
Old 26-07-2017, 02:30 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
Getting there...
Base ring for dome (2.533m in outer diameter, 2 sections) was picked up from Smithweld today.

The next step is to transport it to my future observatory in Mount Pleasant, Ballarat
Attached Thumbnails
Click for full-size image (Dome_ring.jpg)
202.8 KB48 views
Reply With Quote
  #57  
Old 26-07-2017, 06:20 PM
xelasnave's Avatar
xelasnave
Gravity does not Suck

xelasnave is offline
 
Join Date: Mar 2005
Location: Tabulam
Posts: 8,436
Excellent.
I am happy you are doing the important things.
Time is now more valuable than money.
Alex
Reply With Quote
  #58  
Old 28-07-2017, 07:00 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
Quote:
Originally Posted by xelasnave View Post
....Time is now more valuable than money.
Alex
Yep.. probably not much of it is left so... I'd better hurry a bit with this (and some other important projects).
Reply With Quote
  #59  
Old 28-07-2017, 07:28 PM
xelasnave's Avatar
xelasnave
Gravity does not Suck

xelasnave is offline
 
Join Date: Mar 2005
Location: Tabulam
Posts: 8,436
When you stop you wonder why you did not stop earlier.
Good luck.
The key is having projects..the observatory is perfect...
Don't worry about money there is never enough and one day you find there is more than you can spend.
Alex
Reply With Quote
  #60  
Old 13-08-2017, 04:04 PM
bojan's Avatar
bojan
amateur

bojan is offline
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 4,974
So much for "guarantied" tolerances of +/- 3mm...
This gap is ~22mm wide.
There will be some persuasion needed to join those two ends.
Attached Thumbnails
Click for full-size image (Gap.jpg)
201.1 KB25 views

Last edited by bojan; 13-08-2017 at 04:16 PM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 07:36 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Advertisement
NexDome Observatories
Advertisement
FLI Cameras and Imaging Accessories
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
SkyWatcher Star Discovery
Advertisement
Tasco Australia
Advertisement
Meade Instruments
Advertisement
Bintel
Advertisement
Atik 16200
Advertisement
Astronomy and Electronics Centre
Advertisement