FreeLists / az-observing / [AZ-Observing] Re: Tonight's Eclipse

[jack.jones@xxxxxxxxxxxxx]

Both then definitely L=0 on the Danjon scale (reproduced below courtesy Fred
Espenak). I'd say last night's was pretty close to the middle of the range,
L=2. Details were easily visible but the moon coloring was grayish. Didn't
see much if any redness.


      L = 0     Very dark eclipse.
               Moon almost invisible, especially at mid-totality.

     L = 1     Dark Eclipse, gray or brownish in coloration.
               Details distinguishable only with difficulty.

     L = 2     Deep red or rust-colored eclipse.
               Very dark central shadow, while outer edge of umbra
               is relatively bright.

     L = 3     Brick-red eclipse.
               Umbral shadow usually has a bright or yellow rim.

     L = 4     Very bright copper-red or orange eclipse.
               Umbral shadow has a bluish, very bright rim.

or at:

http://sunearth.gsfc.nasa.gov/eclipse/OH/Danjon.html


Jack

> 
> >>  I've seen a spectacular eclipse high in the sky yet where 
> you could only
> >>  see it with averted vision, very dark brownish gold. This was in
> >>  ~1963-64, I think the year of Kilauea or Pinatubo.
> 
>      Mount Agung, but I had to look it up, too.  There was a 
> similarly-dark
> one in Dec 1992 following the eruption of Pinatubo.
> 
> \Brian
> 
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