At 9:22 PM +0200 1/7/13, Boris Liberman wrote:
On 1/7/2013 9:07 PM, Darren Addy wrote:
Honestly, I think the best option is the Pentax O-GPS1 if you shoot
Pentax models that are compatible. What can be done with them is
amazing. Like any photography, wide field is easier to do than
telephoto (which gets increasingly more difficult with focal length).
But check out what this guy did with a K-5, an O-GPS1 and a 200mm f2.8
lens: http://poirierstephane.free.fr/photos/index.php?/category/132
AMAZING. I recently purchased an O-GPS1 to go with my K-5 and intend
to start with my Super-Multi-Coated Takumar 135mm f2.5 v2 along with
some more wide field stuff... just as soon as I get the fires in my
life put out.
: \
I should support year suggestion, Darren. It simply makes the most
sense. However I wonder if 500mm lens is something that software on
the camera and in the GPS module could work with. Mostly likely they
will, but it needs to be double checked.
For an astronomical telescope, f8 is not that slow.
Schmidt-Cassegrains - the most popular off the shelf optical system -
are usually f10 (though focal reducers are available). I think what's
more important is the optical quality of the lens. A lot of those
inexpensive mirror lenses are not very good.
As for astrophotography with the O-GPS1...I've gotta get one!
--
Steve Sharpe
[email protected]
http://earth.delith.com/photo_gallery.html
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