[AZ-Observing] Re: DLSR Focusing

  • From: ketelsen@xxxxxxxxxxxxxx
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Wed, 4 Jul 2007 14:19:08 -0700 (MST)

Hi Jimmy-
I wasn't going to mention this, but from your latest, it sounds like you
can take your laptop into the field.  There is an inexpensive program
called "Nebulosity" (Starizona here in Tucson sells it), that has a nice
focus setup - lets you zoom to any star in the field.  I generally don't
like using the computer in the field, but I do use it to check focus...

-Dean

> I'm looking for the group's opinion on DLSR focusing when taking
> astrophotos. I find that when I have the camara body mounted in prime
> focus
> (Canon XTi to a 8" or 11" SCT) it is dificult to assess focus and to date
> the results haven't been "stellar". I was looking at the Canon magifying
> angle finder "C" which has 1.25x and 2.5x and runs about $180 delivered.
> Other options or tricks?
>
> Jimmy Ray
>
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