Re: [APML] Taurus Tracker vignetting, advice needed

[Alan Voetsch <critter12952@yahoo.com>]

Hi Frank,

There is not a lot you can do if you want to use a reducer. I also have
a f/6.3 reducer (Celestron) that I just started using again. Man, that
vignetting is UGLY. I use the Taurus TIII, and I have used their FR in
the past, and if I remember correctly, there was quite a bit of
vignetting. It's been a couple of years since I've used it, but I will
be trying it again to see how it compares to the 6.3 reducers. I don't
think there will be a lot of difference between the two. I think we
need to work on anti-vignetting techniques in PS.

Actually, I think the Taurus reducer is a 6.5.

Alan

--- Frank Barrett <frankb02@bellsouth.net> wrote:
> I'm currently using the Meade f/6.3 focal reducer on a C8 with a new
> Taurus
> Tracker III (Santa, er, Mrs. Barrett was kind).  I just got my first
> roll of
> slides back and I'm not at all happy with the vignetting I'm getting
> with
> this setup.  Taurus sells an internal f/6.3 reducer which their
> "glossy
> sales brochure" claims will significantly reduce the vignetting. 
> Kind of
> makes sense since it does shorten the distance to the film plane.  Is
> there
> anyone on this list familiar with this reducer?  Is it worth the
> money?  Is
> there anything else I can do to reduce this vignetting (short of
> going long
> at f/10)?  Not sure it matters but the camera I'm using is an OM-1.
> 
> I'm kind of bummed...approximately 20 hours of exposure on this roll
> with
> good focus and tracking and every shot looks like I'm shooting
> through a
> sewer pipe.  I could spend a month in Photoshop cleaning up all this
> mess.
> Help!
> 
> Carpe Noctem,  Frank
> 
> Astropix:  http://bellsouthpwp.net/f/r/frankb02/astropix.html
> 
> 
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