Re: [APML]: Visual magnitude

[Alfredo Zanazzo <alferd@mbox.lol.it>]

Chuck Vaughn wrote:
> 
> 
> Alfredo Zanazzo wrote:
> >
> > I would like to know some opinions about the subject.
> 
> I frequently see Brian Skiff quoting sky brightness in Magnitude/arcsecond^2.

You should explain this formula better,
ay. Any person's estimate is going to be based on their
> ability to see faint stars.
> So it means that if you see the 6th magnitude, i could maybe see only 
the 5th, while someone else will maybe spot the 7th, so how can one 
estimate the magnitude of a site with this empiric method?



>
> We did some magnitude estimates here and I could see between 7.0 and 7.5 in
> Ursa Minor.
> 
> Despite all this the sky looked gray.
>So Mike Simmons was right to say that the sky brightens after certain
degree of visual magnitude!
 
>Alfredo-- 

--
Regards, Alfredo Zanazzo ( alferd@mbox.lol.it )

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