From: Walter Lickteig <wflyer@adelphia.net>

Date: November 4, 2007 2:11:53 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Barlows and Mars

Milton,

I also have used Televue's Powermates - 2x, 2.5x, and 3x with good success depending on the seeing conditions.

Walt

On Nov 4, 2007, at 10:10 AM, Milton Aupperle wrote:

With Mars fast approaching it's final close approach for this decade

(max 15.9 arc seconds on Dec 18th), I was wondering if people have any

comments on the barlows they use for long focal length imaging?

I have been using an Antares three element 2x multi coated achromatic

Barlow, which seems to work okay but I do get some color fringing. So

I'm thinking about maybe replacing it with a TeleVue 2.5x Powermate.