From: Jeff Phillips <imjeffp@mac.com>

Date: November 4, 2007 11:14:23 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Barlows and Mars

I use a TeleVue 2.5x Powermate in the 10" LX200 with the SPC900NC.

On Nov 4, 2007, at 12:10 PM, 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.