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

[rick.rotramel@xxxxxxxxxxxxx]

Another variable to the type of eclipse should be:

How much the moon is centered behind the umbra.

That makes a huge difference on the dynamics.

Rick R. 
SAC


         
> 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.
> 
         
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