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/ Borg 125SD
September 30, 2013 12:07 AM
Hows the optics of this Doublet compared to TAKs, as Borg says its a Pentax made objective ?Since the basic scope is an F/6 which focuser option will be good for purely
visual use especially widefield ?
I am on the TEC 110 list but as its production is uncertain and since light weight/portability is a must i am keeping this as an option along with the yet to be released vixen 100.
September 30, 2013 1:10 AM
I have one and i like it alot.
September 30, 2013 5:13 AM
I too have one and love it. I have never looked through a Tak to compare, though I previously had a new model NP127is. The Borg is definitely more colorful on bright stars, though is just as sharp on planets. By colorful, I mean Vega inside and outside of focus, or when thermally challenged. In focus, color control is quite good for an f/6 doublet.
The Borg is actually lighter than the TEC 110, 3.5 vs 4.5 kg. The Borg is a fair bit larger than the TEC though, about 700mm vs 482mm. The Borg has a substantial aperture advantage over either the TEC or the Vixen.
The 2" Feathertouch is the way to go for visual; it has 1.5" travel vs 0.8" for the M57 version.
September 30, 2013 6:59 PM
Thanks for the feedback.
September 30, 2013 9:16 PM
I personally don't like the drawtube design, so I'm using a moonlite on my 125SD for AP. The option may not be ideal for visual coz it adds redundant weight. But with that I can attach a TS2.5 flattener or a Borg #7870 0.7x reducer/flattener to it.
I haven't tried it extensively on visual performance, but I sincerely love the view it gives during the brief sessions.
October 3, 2013 4:06 PM
Beat Kohler of
uses the Borg 125SD to build the
"HARUKA" Double Refractor
, fitted with Matsumoto EMS 2" image erecting mirrors.
Borg 125SD "Haruka" with 2" Feather Touch Focuser CHF 12,846.00 / € 9,749.00
Borg 125SD "Haruka" with 3" Feather Touch Focuser CHF 13,952.00 / € 10,589.00
Nice toy, isn't it?
"Life is too short to miss the beauty of heavens."
October 4, 2013 4:52 AM
Certainly it is! Thanks for the good info
/ Borg 125SD
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