Astrofund Depletion Program
Stage 3
Concept Wireframe Sketch
designed on a piece of paper , with a pencil. HB LOL
Just some of the considerations with stage 3 of the Astrofund depletion program. feel free to chip in anything I may have overlooked. :>)
Building oriented corner shown toward North. This allows for pier offset toward northern corner of dome,,,remember "Southern Hemisphere" forks point south. Pier structure will be concrete block approximate weight 3 tonnes, to false floor level , 6" diameter concrete filled heavy wall pipe from ground to wedge. False floor hight approx 3'.
Dome structure will be supported on 4 permenant RHS post set vertical in concrete Pad at midpoint 4 outside of walls, isolated from pier block. at 7' in hieght atop these RHS posts will be weight support rollers with cyclone lockdowns, intermediate rollers and support beams x 4 located on subfloor support of false floor, at midpionts towards building corners, atop these weight support rollers and lateral guide rollers, movable to fine tune dome rotation centre. around roof weather flashing.
Tthe building corner,s to be C-section steel purlin, with tophat run horizontal in two places equispaced, Building clad in colorsteel. False floor subfloor constructed from C-section purlin bolted to dome support RHS posts and bracketed to buiding corner C-section. Safety rail and gate to be provided around stairwell. Floor material to be 1" thick strandboard with various lift up panels for access to Cabling, Climate control, and underfloor storage facilities.
Climate control under floor with vents in redundant corner spaces to enable cooling of dome room to start early afternoon
Warmroom window provided for viewing of equipment, with full remote capability 2 computers will be used , one in the dome with LCD flat panel monitor, to act as remote terminal for USB and serial devices, equipment and image capture, connected via Network to Warmroom workstation.
Master shutdown Breaker, for dome rotation, dome shutter control, and Scope power located in warmroom.
Overall size of structure, 5 meters by 8 meters, hight at dome apex 4.5 meters
Rationale
Building ,Round Versus Square.
Easier to construct, and provides for ample storage under redundant corners of dome room.
Easier to add to at later stage, for needs, ie: pool table , bar , Home theatre , WC etc :>)
Steel versus Timber
Too many creatures like to eat timber in this country.
Easier to fabricate and then refabricate when you stuff something up.
Dome versus roll-off
A mistake, wish i hadn't
Dome Automation
It will happen eventually, interim measure plain old hand paddle control, designed with future automation in mind.
>>>>>>>
Other Considerations
Concrete pier should extend from offset to north to centre of dome, for any future ALT AZ gear.
Dome Park position must have 12V contact charging piont for shutter motor battery.
NW and NE sides of the building should be thermally insulated.
Double door system between warm room and dome, ?
Alarm System and CCTV. CCTV to be ported to website.
Viewing deck mazzanine floor.
Eventually.
Fully automated Remote driven Observatory, with website frontend,
...
Links to Construction Pics can be found here..
http://ravenshoe.net/bbs/YaBB.pl?boa...9516;start=0#0
Not quite so bad at Ravenshoe but still significant I bet!
