[AZ-Observing] Re: Fun with M1

Jack,

Your moon filter is likely a double polarizer, which can indeed be set to allow 
almost no light transmission.  For the Crab Nebula, Paul suggests using a 
single polarizer.

Another object that shows polarization is the Egg Nebula (PK 80-6.1) in Cygnus. 
 It dims very strongly with a polarizer filter.

Tom


---- Jack Jones <Telescoper@xxxxxxx> wrote: 
> You mean rotate the eyepiece with the filter set to max transmission? I would 
> think using the polarizing feature itself would just block it out entirely. I 
> have a polarizing Moon filter (Orion, $35) that goes from 1 to 40% 
> transmission we can try next time on M1.
> 
> Jack
> 
> 
> ----- Original Message ----- 
> From: <beevo1@xxxxxxx>
> To: <az-observing@xxxxxxxxxxxxx>
> Cc: "L Knauth" <Knauth@xxxxxxx>
> Sent: Thursday, November 15, 2007 11:08 AM
> Subject: [AZ-Observing] Re: Fun with M1
> 
> 
> Polarizing filter in the eyepiece and rotate the eyepiece?
> 
> Beevo
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> 
> 
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