Naglers are not for everyone and or every object, they excel when a wide field is wanted. They do not offer too much advantage with the 32" Grim for instance. I have a 6"f5 refractor and a Nagler offers excellent views. It is always impressive to see the Veil and N. American in a wide view.
I remember doing a side-by-side comparison a few years ago with Debbie's 15" Obsession on a Halloween night with exceptional seeing of Jupiter, where we were able to crank up the magnification. From Nagler to Plossel (TV) to Orthoscopic, each was a slight improvement over the previous eyepiece. That was my subjective experience anyway. The ortho, despite the narrow field (Mark Dakins used to say it's like looking through a soda straw!), did have a slightly sharper image than the plossl, and both were better than the Nagler, for cleanest planetary imaging anyway. But of course you have to start with good seeing (and it was fabulous that particular night).
--- On Thu, 7/30/09, Chuck Hards <chuck.hards@gmail.com> wrote:
From: Chuck Hards <chuck.hards@gmail.com> Subject: Re: [Utah-astronomy] Jupiter Impact Scar To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, July 30, 2009, 9:44 PM Thanks Don. Is it a Tele Vue Plossl? I'm thinking the Nagler will probably outperform it for sharpness unless it's a TV. Let us know what shakes out.
On Thu, Jul 30, 2009 at 3:39 PM, Don J. Colton <djcolton@piol.com> wrote:
Chuck,
When I get a chance I will compare the Nagler to my 13 mm Plossl, unfortunately I don't have any Orthos in that focal length.
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