Just as an aside-Naglers already have a barlow built into the lens.

Andy

Jack Estes wrote:

> You wrote:
> If a person has a 10" LX and a 9mm Nagler, 19mm Nagler, 22mm Panoptic,
> and 35mm Panoptic, would one benefit from getting the 2" Barlow from
> Tele Vue any for visual use?
>
> My reply: With that spread of eyepiece focal lengths, I don't think you
> would benefit from a barlow. I have the Meade #140 and rarely use it.
> It adds an extra bit of glass and the eyepieces you mentioned have
> plenty of glass to reduce the brightness of your intended object.
> I have yet to see a barlow at a given power that equals a well made
> eyepiece alone at the same power. Barlows do increase eye relief but
> all the eyepieces you mentioned are decent in that area.
>
> (http://www.precision-camera.com)
> Austin,TX Astronomical Society
>
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