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Atl
professor emeritus
*****

Reged: 04/13/12

Re: C-c-c-c-cold! new [Re: nirvanix]
      #5630123 - 01/18/13 03:35 PM

I am glad I live in the desert...

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newtoskies
Pooh-Bah


Reged: 07/15/12

Loc: SE Ma.
Re: C-c-c-c-cold! new [Re: nirvanix]
      #5630145 - 01/18/13 03:50 PM

Well it's about 20f here right now and not a cloud in the sky.....but I will be going out this evening so most likely no scope time. BUT that could change and I am getting my gear together just in case.

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NeilMac
Carpal Tunnel


Reged: 09/25/10

Loc: MedHat, AB, Canada
Re: C-c-c-c-cold! new [Re: nirvanix]
      #5630189 - 01/18/13 04:12 PM Attachment (9 downloads)

It is nice out in the cold when its not windy, skies are normally so crisp.

Right now +7c +1c with the windchill and cloudy. Tonight -15c without windchill.


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lamplight
Carpal Tunnel
*****

Reged: 09/18/12

Loc: western MA, U.S.
Re: C-c-c-c-cold! new [Re: NeilMac]
      #5630237 - 01/18/13 04:39 PM

wonder what Red Green would use if his scope froze?

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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: C-c-c-c-cold! new [Re: Eric63]
      #5630411 - 01/18/13 07:03 PM

I'm going out tonight. At 6:02 p.m., it is 60.3 degrees F here in San Antonio.

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panhard
It's All Good
*****

Reged: 01/20/08

Loc: Markham Ontario Canada
Re: C-c-c-c-cold! new [Re: GeneT]
      #5630431 - 01/18/13 07:14 PM

Quote:

wonder what Red Green would use if his scope froze?


Warm WD40

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Eric63
scholastic sledgehammer


Reged: 06/16/12

Loc: Ottawa, Ontario
Re: C-c-c-c-cold! new [Re: GeneT]
      #5630515 - 01/18/13 08:04 PM

Oh, rub it in why don't you

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csrlice12
Postmaster
*****

Reged: 05/22/12

Loc: Denver, CO
Re: C-c-c-c-cold! new [Re: Eric63]
      #5630575 - 01/18/13 08:59 PM

Hey, WD40 has a thousand and one, maybe a thousand and two now ways of being used!!!!!

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mountain monk
Carpal Tunnel
*****

Reged: 11/06/09

Loc: Grand Teton National Park
Re: C-c-c-c-cold! new [Re: csrlice12]
      #5630657 - 01/18/13 10:06 PM

I often observe at or below zero. If I didn't I would lose four months of observing under some of the year's best skies.

I approach it as a mountaineering or military problem requiring careful planning, simplicity, precision, attention, and good gear. Ten below begins to be tough, however, and I won't do it unless the skies are good and, perhaps most important, I feel good. It's very hard to force it, especially for several days in a row. At that point it is more mental discipline than physical comfort/discomfort. It is much, much easier at home than at a distant site, though the latter is bearable with a propane heater or a warm car. I only observe at home now, and I come in to warm my hands by the stove and drink hot chocolate. I have no intention of giving it up--too much great stuff to see.

Dark skies.

Jack


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WaterMasterAdministrator
Moat Keeper
*****

Reged: 02/17/10

Loc: Southeast Idaho, USA
Re: C-c-c-c-cold! new [Re: mountain monk]
      #5630705 - 01/18/13 10:24 PM

The biggest problem I have below 10 to 15 F is watery eyes - it's even worse when the wind blows. I still go out when it's colder, some of my clearest skies happen in mid-winter. I even went out for the Quadrantids at 2 AM and 0F.

Because I spend a lot of time out of doors with my job, I'm well versed in coping with standing around in the cold (I'm the boss so I spend most of my time watching other people work ).

But it's a hobby. I like it to be fun. And the older I get, the less fun extreme astronomy gets (and I gave up mountaineering 11 years ago ). It's got to be pretty spectacular to overcome the warmth and comfort of the man cave.


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mountain monk
Carpal Tunnel
*****

Reged: 11/06/09

Loc: Grand Teton National Park
Re: C-c-c-c-cold! new [Re: WaterMaster]
      #5630739 - 01/18/13 10:42 PM

Yeah, I used to be a boss--so I know about that standing around. I guess I'm like the old mill horse--I just keep doing what I've done all my life, most of which has been spent in the cold--cold mountains, cold water. I will not deny that it's getting harder--I'm 71. Yep, dumb old mill horse that will die with his traces!

My eyes don't seem to water. Luck.

Dark skies..

Jack


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saberonyx
member


Reged: 02/02/12

Loc: levittown, new york
Re: C-c-c-c-cold! new [Re: Eric63]
      #5630755 - 01/18/13 10:52 PM Attachment (5 downloads)

Everyone came over for some pizza tonight.It was a good clear night ,cold but the wind died down to just a breeze.I pulled everyone out for 2 sessions.I had to hit them hard and fast with the big stuff ,Jupiter right away with the 30 mm then the delos 10mm and the wows were popping out of everyones mouth.It was really clear and the bands were very bright.Of course,men like me,Mr Acker or any one else from cold regions could stay out all night but my guests were dropping like flies.Everytime I turned around ,someone else ran inside to the comfort of the warm house.After some pop corn and cake they braved the cold again to see the sights of Orion.It was a real fun night and we can"t wait for the warm weather.YES ITS ALL ABOUT THE COLD IN WINTERTIME.

Edited by saberonyx (01/18/13 10:54 PM)


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lamplight
Carpal Tunnel
*****

Reged: 09/18/12

Loc: western MA, U.S.
Re: C-c-c-c-cold! new [Re: saberonyx]
      #5630772 - 01/18/13 11:01 PM

I just had the same weather here in NA.. Braved it till about 10:30, went out around 6 I guess, it's about 20F. It stopped being fun as I got uncomfortable so glad to get some clear sky.. 3 dark bands easy in my refractor.. Then the 10" reflector for a bit. Nice sky but still having a heck of a time seeing M106 and neighboring m's.. Need to get it higher in the sky I guess.

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hectar
member


Reged: 12/24/12

Loc: Ontario, Canada
Re: C-c-c-c-cold! new [Re: lamplight]
      #5630785 - 01/18/13 11:13 PM

Since we are talking about cold, I am just jumping in here
We did had clear skies last night but cold kept me out. I was thinking there must be a way to fight back my fellow comrades.

So here is an idea and perhaps someone has already tried it?
i.e: If you buy a cheap tent like this (29.99$)

http://www.canadiantire.ca/AST/browse/5/SportsRec/Camping/Tents/PRD~0765023P/...

cut hole(s) near the roof and stick out upper end of the scope from it. seal the hole with waterproof fabric by duck tape or something in such way that it gives some freedom to move the scope (something like a "bellows" used in the FD fans). Then just stay inside the tent, keep it warm by portable heater and do observations.

My question is would that arrangement affect performance of the scope as its upper end (say a refractor lens) is in sub zero temp range and lower end where eyepiece/mount etc are @ 10-15C range


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WaterMasterAdministrator
Moat Keeper
*****

Reged: 02/17/10

Loc: Southeast Idaho, USA
Re: C-c-c-c-cold! new [Re: hectar]
      #5630806 - 01/18/13 11:28 PM

Getting out of the wind makes a lot of difference. Kendrick makes and observatory tent.

In my backyard, I surround myself with light shields, which also keep light wind at bay (although I don't use them if winds are more than 5-10 mph).


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hectar
member


Reged: 12/24/12

Loc: Ontario, Canada
Re: C-c-c-c-cold! new [Re: WaterMaster]
      #5630828 - 01/18/13 11:44 PM

Those tents look good but are expensive. Let's just say that this solution is for the backyard and during the minimum wind conditions.

Would the temperature extremes at the scope will affect its performance/views?? I believe air column temperature inside the refractor(if used) would be @ in the mid range but the exposed side of the lens is in sub zero: what could happen to lens? it would crack?


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WaterMasterAdministrator
Moat Keeper
*****

Reged: 02/17/10

Loc: Southeast Idaho, USA
Re: C-c-c-c-cold! new [Re: hectar]
      #5630840 - 01/18/13 11:53 PM

Yeah, that's why I don't have one

In answer to your other question, I don't think you'd have too much trouble with thermal currents using a refractor, but a reflector, open at both ends, is essentially a chimney. The air temp in the tube itself, without infiltration, is going to equilibrate. Consequently the objective is in little danger of cracking.


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Dennis_S253
Pooh-Bah


Reged: 11/22/11

Loc: West Central Florida
Re: C-c-c-c-cold! new [Re: WaterMaster]
      #5630847 - 01/18/13 11:59 PM

Any body heard of these? What is 200 gram thermo...
boots


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NeilMac
Carpal Tunnel


Reged: 09/25/10

Loc: MedHat, AB, Canada
Re: C-c-c-c-cold! new [Re: Dennis_S253]
      #5630852 - 01/19/13 12:04 AM

-4c and I got an hour in before the haze moved in. Got some nice pics and will work on them tomorrow.
Got the moon posted and happy I got the culmination right.


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mountain monk
Carpal Tunnel
*****

Reged: 11/06/09

Loc: Grand Teton National Park
Re: C-c-c-c-cold! new [Re: Dennis_S253]
      #5630856 - 01/19/13 12:07 AM

200 ram thermo is just insulation--and not much. If you want a pair of warm boots, get some Sorel pacs--Caribou, Bear, Glacier models are all very warm.

Dark skies.

Jack


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