Re: [APML] Dark Nebulae in the Milky Way

["Chris Cook" <chris@cookphoto.com>]

Hi Wade,

Thanks!

This site is around mag 7.3 and according to the LP map sits right on the
border between a Bortle Class 1 and Class 2.  So it's fricking dark!  The
CSC link to your site shows your's as dark or maybe even darker?  Either
way, you could still probably go 40 minutes @ f/2.8.
The pushing was a last minute decision.  It probably wasn't necessary since
+1/2 is not much of a push.  Jim still has the original trans since he
scanned it on his PL3000.  Maybe he'll chime in on the density.


Chris

-----------------------------
Chris Cook Photography
www.cookphoto.com


----- Original Message ----- 
From: "Thomas W. Earle" <twade@bmi.net>
To: "'Discussion of Film Astrophotography'" <astro-photo@seds.org>
Sent: Wednesday, June 15, 2005 1:53 AM
Subject: RE: [APML] Dark Nebulae in the Milky Way


> Chris,
>
> Excellent shot!
>
> It's phenomenal you were able to go 40 minutes with E200 at f/2.8.
> Why did you just push it a 1/2 stop?  How "light" was the negative
> (i.e. did you loose any of the faint stuff by exposing so long)?
> That's one dark sky.  Basically, I'm trying to figure out how long I
> can go at my "high altitude" dark site.
>
> http://www.cleardarksky.com/lp/TblRckOrlp.html
>
> Wade
>
>
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> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo
>
>


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