Bushfire Threatens Major Telescope

Thorfinn.au writes "Authorities are warning lives and property are under immediate threat as a large bushfire burns out of control near communities in northern New South Wales. The Rural Fire Service has issued an emergency warning for the large, fast moving blaze near Coonabarabran, which has already destroyed two properties. Siding Springs, the principal optical observatory is under threat. The MtStromlo observatory was destroyed in a bush fire in 2003."

Comments

Re:Where

[ChunderDownunder]

Don't they teach world history/geography in schools these days? :-)

NSW has existed on world maps for over two centuries, has a population larger than Washington State or Serbia and is bigger than Texas or Mozambique.

Re:Why so many bush fires?

[tconnors]

Do they never do controlled burns to reduce the burden of undergrowth? Seems like they keep having large bush fires threaten important stuff.

One wonders if this is Environmentalism run amuck of putting out all fires until instead of number of small natural fires that don't do significant damage, the fuel builds up into inferno range that does great damage?

Or you could just clear the brush around your observatory regularly -- again if the Environmentalists let you. Australia is rather weird in this regard.

Well, 10 years ago to the week, Mount Stromlo Observatory burnt down. The owners of that also own Siding Spring, and put in place many measures. Like clearing trees, and installing fire mesh on all the windows.

Problem is, the flash point of eucalyptus oil is 47 degrees, so on hot days the country is basically guaranteed to erupt in a massive fireball. Fireballs have been observed rolling along bare earth for a km, just igniting the volatile oils above the ground layer in the air.

Other problem is that we've had record rains for 2/3 years so burnoffs couldn't really be done. And now we're back in a record hot spell, and everything has completely dried out in the past 6 months now that La Nina is back. It went from too wet to burn off to too volatile to burn off in a blink of the eye (and since there are government organisations involved, it could be argued they can't act that quickly :) .

Most buildings on the mountaintop are 1970's era. The main 3.9m dome has no active fire safety equipment in it, but it is clad in fire proof material and was always intended as the fire safety refuge for the entire mountaintop, since there's only a single winding road off the mountaintop (which always scared the hell out of me in Summer).

The lodge on the other hand had wooden doors, was quite up close to the bush (a feature, because it moderated the temperatures for the astronomers sleeping during the daytime), and was sorely lacking in maintenance (although when I worked there, I could hear workman on the roof often enough, so I presume they were clearing leaves and twigs from the roof).

Fortunately, yesterday was Sunday. The photos the guy on duty took just before leaving look awfully scary to me, but he's a firey, and knows what he's doing. Might have been interesting to get all 18 staff and x number of visiting astronomers off the mountain in a hurry if it was a week working day the bus was back in town and not available when the evac was called. Not much room to land a chopper (although it's been done before).