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WRose
Pooh-Bah
Reged: 07/08/05
Posts: 1051
Loc: Colorado, USA
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Re: New 125mm binoculars from Vixen
06/27/08 02:32 AM Attachment (11 downloads)
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Mr_Bill, I use the 24mm Panoptics, 24mm Brandons, 7/8" Brandon (~22mm), 19mm Panoptics, and then Nagler T6s on down in my Bt-125HFT. I have also used many of the 'high End' planetary EPs with these. When you get into higher powers a pair of Baader Semi-APO filters do help knock down the fringing especially on the brighter planets.
From what I've heard they are a new 'design' the same as the fixed versions recently displayed/sold. With high quality eyepieces, the objectives are the weakest link in the BT-125HFT. Don’t know about the new version but suspect it’s the same,
Milt, The BT-125 HFT don't have nearly as much fringing (CA) as the earlier versions. With Filters 200x is not a problem even for bright targets.
Quote:
However, the spiky stars and soft field edge that Allister found in two examples . . .
Not an issue with my BT-125HFT. With 24mm Panoptics & Brandons I don't get a 'soft edge'. The 25W Masuyama work very well with the BT-125HFT telebinocular. On nights of very good or beeter seeing and transparency the Zeiss A-4 and 4mm TMB-Supermonos bino nicely with the BT-125HFT although the 5mm seems to work a little better most of the time. The 3.5 Naglers and Pentax XWs are about as much as you can push them at ~220x and are surprising on nights when conditions are great.
Understand these are not an APO and don't compare to the NP-127 for color correction, etc. as expected. They are not 150mm Fujinons either. But at $4,800.00 for the complete kit with foot locker size shipping case, I haven't regretted buying them.
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Clear Skies, Bill
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