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asimov
13-09-2005, 08:34 PM
:doh: The weather gods have done it again, lol...Normally I will step outside & see if it's worth setting up a scope or 2 just before dusk, which I did tonight..Yuk! wind blowing with nice cloud cover & rain imminent! Stepped outside just now & it's perfectly clear, no wind with good seeing conditions!! :rolleyes: :rofl: Of course, I've been here before......Just as your finishing setting up, in comes the clouds again. I think it's another trick just to see me frantically setup..;) I'm not fallin' for it! hear me weather gods?? :P (quite often I'll tell them I won't bother setting up....but when their not looking...I will, just to fool them! hehehe! SHHH!):D
davidpretorius
13-09-2005, 08:41 PM
lovely night here too, might have a crack at the sept challenges. not that you are going to be observing as well asimov as you just happened to be walking outside with you scope!

no no not going to look thru it at all!
atalas
13-09-2005, 08:42 PM
Mate Ive lost count how many times Ive spent 2 hours setting up for some shots and when I'm ready the clouds roll in ! very painful :doh:


Louie
slice of heaven
13-09-2005, 08:47 PM
Buy a DOB!!!! :D
asimov
13-09-2005, 08:48 PM
Yeah...That's another thing...It takes 4 hrs min for the newt to cool before I'll even bother to put eye to EP...I might just sneak the refractor out...I'm not going to use it of course!? I'll just set it up & look at it!
atalas
13-09-2005, 08:50 PM
Why ? I would just sell It again ! :rofl:


Louie :lol:
davidpretorius
13-09-2005, 08:52 PM
whats a dob? a definately obliteratingly brilliant!
atalas
13-09-2005, 08:53 PM
Mate you've got to look at fans for cool down! 4 hours wait is just to long to wait , but then again good reason to use an 80ED while you wait .

Louie :zzz:
davidpretorius
13-09-2005, 08:55 PM
great pieces of glass though, have you tried throwing water on them to cool em down or do they keep trying to hump the scope?
atalas
13-09-2005, 08:59 PM
Yeah Dave I keep mine tied up in the back yard that time of month too ! :rofl:

Where still talking about scopes aint we ?

Louie :lol:
asimov
13-09-2005, 09:02 PM
That IS with a fan Louie! a 6" pedestial fan blowing on the back..I think I need a web-back mirror, not a full thickness one.
Starkler
13-09-2005, 09:02 PM
You know whats worse than setting up for nothing?

Forgoing a dark sky trip because your fears about the weather were wrong and you hear about what a great night you missed :(
davidpretorius
13-09-2005, 09:02 PM
yup me parkes scopes are pretty tough, but intelligent, bred em with a dingo under a full moon and as such, they get a bit crazy for the next 7 days
davidpretorius
13-09-2005, 09:03 PM
get a bigger fan, or even better, turn it on!
asimov
13-09-2005, 09:19 PM
Turn it on!? Hmmm that's an option! I never thought of that! I was wondering what that button that said on/off was for?
davidpretorius
13-09-2005, 09:22 PM
what switch, oh you mainlanders know nothing, tell the mice to get off their butts and run and then run faster!
asimov
13-09-2005, 09:26 PM
I was also thinking that perhaps the fan should have blades?? would this be a good MOD to do Dave??
ballaratdragons
13-09-2005, 09:27 PM
4 hours!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!

I turn my little fan on and in 5 minutes it's ready! Mine is the one that come with the scope. It is just a computer fan fitted to the back end but boy it works great.

DOB: Definately Optically Brilliant
davidpretorius
13-09-2005, 09:31 PM
no no no no no.

buy a new fan, take out the blades, put the mice in and get them to run around the cage, their little tails wagging will create an air flow!
asimov
13-09-2005, 09:36 PM
OIC, Ta Dave

5 mins Ken!? Geez! I want one! :rofl:
davidpretorius
13-09-2005, 09:42 PM
remember, like a woman, it is a thing of building passions, not a 5 minute quickie!

the subtle interplay of adjusting air temps, the anticipation of what you will see. the riding of the highs and lows. those cloudy interuptions, or even the lightning strikes, but at the end of 4 hours of ****** hard concentration, the end result is worth it.

...and then you get married and all it ever is are 5 minute quickies.


at least your parkes mirrors appreciate your fine, delicate & patient ministrations to control her temperatures!
asimov
13-09-2005, 09:57 PM
It's very simple really: buy 2 thermometers, 1 outside, 1 on the mirror. Bang OTA in airconditioned room, turn aircon on. Get both thermometers reading the same, put OTA on mount. Turn mounted fan on & LEAVE on all night.