[AZ-Observing] P/Holmes and an OIII

From: Frank Kraljic <fjkraljic@xxxxxxx>
To: Arizona Observing Observing <az-observing@xxxxxxxxxxxxx>, amastro@xxxxxxxxxxxxxxx
Date: Fri, 26 Oct 2007 00:15:15 -0700

With many visual morphological similarities to a planetary nebula, I  
jokingly wondered what would happen if I applied the OIII filter on  
the comet.  To my surprise, its halo became more apparent by  
comparison to the unfiltered view, stretching nearly a diameter  
outside the bright coma's shell under light polluted skies in  
Scottsdale, AZ.

I know Swan Band filters do transmit an OIII line, and wonder if  
anyone with a Swan Band filter will notice improved contrast.  This  
is the first time I've ever noticed--with limited experience-- 
enhancement in a comet with an OIII filter.  A UHC filter did nothing  
of note.

-FRANK
  
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References:

[AZ-Observing] P/Holmes tonight (Oct 26.1 UT)
From: Brian Skiff

[AZ-Observing] Re: P/Holmes tonight (Oct 26.1 UT)
From: L Knauth

[AZ-Observing] P/Holmes and an OIII

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