Re: [APML] Takahashi First Photo

[Dean Jacobsen <deanjacobsen@earthlink.net>]

Jim, the trick is experimenting for the best balance.  I have shot a couple 
of rolls of hypered PPF 400 through the E-160 and have found that 20-25 
minutes is about right for my tastes.  I have settled with the E200 because 
of the finer grain.  I usually stack 4 exposures and push process 1 
stop.  Others report that a 2 stop push with E200 produces better 
scans.  That would mean that I can cut down the exposure time even more. :>)

I hope this helps,

Dean Jacobsen
www.astrophoto.net

At 10:56 PM 9/10/2002 -0400, you wrote:
>Thanks for the tip about the exposure times. I'll try 40min and see how it
>goes. I'm always paranoid about not exposing long enough. Maybe my fears are
>unfounded with this scope.
>Jim
>----- Original Message -----
>From: "Dean Jacobsen" <deanjacobsen@earthlink.net>
>To: <astro-photo@seds.org>
>Sent: Tuesday, September 10, 2002 10:55 PM
>Subject: Re: [APML] Takahashi First Photo
>
>
> > Jim, thats a nice shot.  With the f/3.3 you will be able to get away with
> > MUCH less exposure time than the 45 minutes that you used on this shot.  I
> > have found that 30-40 minutes with Kodak E200 works great.  You might want
> > to try some shots at 20 to 30 minutes or less with the hypered PJ
> > 400.  Thats the nice thing about a f/3.3 scope.  I have never regretted
>the
> > purchase of my Epsilon 160.  I am saving for an Epsilon 250 for use with
> > medium format.
> >
> > Best Regards,
> >
> > Dean Jacobsen
> > www.astrophoto.net
> >
> >
> >
> > At 11:19 PM 9/9/2002 -0400, you wrote:
> > >I'm very happy with my first success with the Takahashi E-160 Astrograph!
> > >It's not too bad for the second time out! After I was able to overcome
>the
> > >problem of focusing at f/3.3 that is. It's a stack of 2 45min exposures
>on
> > >Hyped PJ400.
> > >     I really love this scope! Please take a look!
> >
> ><http://flyboy999.freeyellow.com/Nebula/GSFinalNorth%20East.htm>http://flyb
>oy999.freeyellow.com/Nebula/GSFinalNorth%20East.htm
> > >
> > >
> > >Jim Ives
> > >  <http://flyboy999.freeyellow.com>http://flyboy999.freeyellow.com
> > > (Astrophotography)
> > ><http://bwphotography.hypermart.net>http://bwphotography.hypermart.net
> > >(Black and White Photography)
> > >  <mailto:flyboy9990@earthlink.net>flyboy9990@earthlink.net
> >
> >
> >
> > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
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> >
>
>
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