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Cool Cats and Careless Claims

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#26 Kokatha man

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Posted 14 December 2018 - 01:19 PM

Yes Mike, dry ice would be immeasurably more difficult for all the reasons you list: as we do quite a lot of imaging away from home usually (not so much this year btw) we can stop at any hotel & get crushed ice, anywhere...& we keep a store of salt, but any supermarket/grocery store in any small town stocks it also - the same ones that have hotels & ice. :) 

 

Dry ice would be way overkill also, something at nearly -80°C being totally ott... ;) 

 

Even if it wasn't, we'd have to watch how tight we closed the necks of those double-bags if they held dry ice...I can just see it sublimating into CO2 & the bags expanding ridiculously & suddenly exploding..! bigshock.gif :lol:


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#27 Peter Besenbruch

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Posted 14 December 2018 - 03:26 PM

Would dry ice (solid CO2) be more efficient?  Probably a lot more difficult to acquire, set up and maintain than salted H2O ice.

Liquid nitrogen would be still more efficient. Besides, I can't remember these complex molecular codes. The atomic symbol for Nitrogen is about as complex as I can get.


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#28 Conaxian

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Posted 14 December 2018 - 03:44 PM

When the tundra is frozen and the mercury is diving and it all gets to be too much, there's always the good little refractor.

Plop it down, come back in a half hour and rock them stars til it frosts up, call it a night and be happy you got to see anything at all.  Remember that old Galileo himself would have killed for an Orion 80.


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