[Chaos-l] Skywatching canceled

Mark South md_south at mac.com
Mon Sep 21 07:48:45 EDT 2009


I suspect that a truly dark place is somerwhere like austrailia or  
antartica.
Mark

Sent from my cell phone

On Sep 20, 2009, at 9:46 PM, Michael Hrivnak <mhrivnak at hrivnak.org>  
wrote:

> You mentioned that the weather wasn't great a lot of the time.  When  
> the sky
> was completely clouded over, were the clouds lit up at all, or was  
> the sky
> black?  My experience at Almost Heaven was that the sky was actually  
> a bit
> brighter when it was completely cloudy.  That tells me that even in  
> a very
> dark place, there is some light pollution reflecting off of the  
> clouds, and thus
> the same light brightens a clear sky at least a little.
>
> Although, I suspect that stars which are too faint for us to resolve
> individually with the naked eye could collectively cause the whole  
> sky to seem
> less-than-black.  It would be interesting to look at a part of the  
> sky with
> the least number of stars, and compare its blackness to other parts.
>
> Michael
>
> On Sunday 20 September 2009 02:32:09 pm Mark South wrote:
>> I know this is slightly off topic but I had a question
>>
>> I noticed at okie Tex one of the darkest star parties in the us that
>> the sky as never truly black.. sort of how it looks at the
>> planetarium.  Why is that?  I think it was quite clear but the sky
>> still was grayish.  Is it possible to find a black sky with stars on
>> earth with an atmosphere and light adaptation.  Greg Dillon theorized
>> that it is truly darker than we realize but he thinks the stars light
>> the sky up some.  Has anyone ever thought of this or been to a truly
>> black sky?
>>
>> Mark
>>
>> Sent from my cell phone
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