Re: [APML] Comet through murky skies

["Bert Katzung" <katzung1@attbi.com>]

Hi Joe:
Sounds like you had good weather in Florida! Lucky guy! The comet's tail
does look sort of bluish, but what Matt and I were referring to was an
overall blue tint to the background. I've reprocessed the image and have a
version that isn't quite so blue but haven't posted it yet. I also took a
few more shots night before last, but haven't gotten the film back yet.
Bert

Bert Katzung
katzung1@attbi.com
www.astronomy-images.com

----- Original Message -----
From: "Joe Mize" <jmize@globe-net.net>
To: <astro-photo@seds.org>
Sent: Saturday, March 16, 2002 1:32 PM
Subject: Re: [APML] Comet through murky skies


> Bert;
>
>      Just returned form four days at Chiefland.  What a show Comet I-Z is
> putting on, can't wait until the April mornings.  I might have something
about
> your "blue" quandary.  Everyone was commenting how blue the comet was
> 'visually'.  Only my 10 & 15min images on RG200S show a blue shell around
the
> the head, but in no way do my photos capture the blue throughout the comet
as
> seen visually.
>
>      Unfortunately I was photographing while 10 acres away Tom Clark had
his 36"
> on Comet I-Z.  I was told there was an obvious Ion tail with a star
between the
> two tails Thursday night.  Must have been impressive.  BTW for all you AA
> subscribers, Tom's 24' dome is complete lacking some final touches.  Now
he has
> to start working on the special mount for his 42".
>
> Bert Katzung wrote:
>
> > Hi Matt:
> > I was surprised to get as much tail structure as I did, but yes, the
blue is
> > overwhelming! I don't know why it isn't suffused with red---shooting
that
> > low in the sky. I've already reduced the blue in the Color Balance tool
but
> > if I go much lower, it starts turning green. I'll have to study up on
the
> > "real unsharp mask" procedure again. Thanks for the comments...
> > Bert
> >
> > Bert Katzung
> > katzung1@attbi.com
> > www.astronomy-images.com
> >
> > ----- Original Message -----
> > From: "Matt BenDaniel" <matt@starmatt.com>
> > To: <astro-photo@seds.org>
> > Sent: Wednesday, March 13, 2002 8:30 PM
> > Subject: Re: [APML] Comet through murky skies
> >
> > > At 08:05 PM 3/13/2002 -0800, Bert Katzung wrote:
> > > >Hi Folks:
> > > >I managed to get a hint of Ikeya-Zhang and its very long tail through
> > some
> > > >filthy post-sunset clouds last Friday. Konica Centuria 800 film. See:
> > > >http://www.astronomy-images.com/images/comets/Ikeya-Zhang.htm
> > > >Comments wecome....
> > >
> > > * nice tail structure
> > > * image is too blue
> > > * real unsharp mask shows interesting detail in head
> > >
> > > --
> > > Matt BenDaniel
> > > matt@starmatt.com
> > > http://starmatt.com
> > >
> >
> > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
> >              Unsubscribe at <majordomo@seds.org>
>
> --
>        "May You Go Among The Imperishable Stars"
>
>                               Joe Mize
>                       http://sfo.sciastro.net
>                   mailto:jmize@globe-net.net
>                        Current Moon Phase
>        http://tycho.usno.navy.mil/cgi-bin/phase.gif
>
>
>
> --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
>              Unsubscribe at <majordomo@seds.org>
>



--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>