New oberwerk toys ultra 15x70
Posted 15 June 2006 - 04:07 PM
oberwerk 10x60m 7x50m 11x56 12x60 9x60 11x70 15x70 25x100if
canon 15x50is 10x42is 10x30is 12x36is
nikon 10x35EII 8x30EII and many vintage binoculars
Posted 15 June 2006 - 04:15 PM
I think they are on my short list for acquisition as funds become available.
They sure look small next to those other monsters though.
Posted 15 June 2006 - 04:19 PM
Posted 15 June 2006 - 04:28 PM
as for the ultra's they are a very good binocular for 350.00,built solid and no worry about going out of collimation.very sharp optics and contrast. sharp out to about 80% of the field,bright as the fujinons,but the fujinons have the better edge sharpness,eye relief is a little short if you have to wear eyeglasses.little on the heavy side,they are the closest thing to the fujinons so far coming out of china and at about half the price...
John, I am anxious as all get-out to hear about the Ultras - no offense to those two fine BT's you have there.
So, in your opinion, where on the scale of quality would you put the Ultra optics in relation to other large Chinese binos like the Obie 15x70? You say the optics are sharp out to 80%, but I have heard the same thing about the Obie 15x70 "standards" ... is the only difference in the build?
Thanks and clear dark skies.....(Which reminds me.....if ONE new piece of astro gear brings the clouds, then what will THREE bring? Be glad you are in Iowa, or you might have gotten a hurricane!
Posted 15 June 2006 - 04:36 PM
Posted 15 June 2006 - 04:36 PM
Looks like a good bit of it is PVC. Have you posted any thing detailing it?
One other thing the Ultras have over the 'regular' Obies is the waterproofing. I'm guessing they are noticeably more rugged?
Posted 15 June 2006 - 04:44 PM
Posted 15 June 2006 - 04:46 PM
In respect to flaring and the "pointiness" of stars - how do the Ultras compare to the Obie standard 15x70? Would you say the stars are "sharper" compared to the standard?
Posted 15 June 2006 - 05:31 PM
Posted 15 June 2006 - 06:01 PM
If you spend enough money with him? I purchased a lowly $149 binocular and had to collimate it myself.
Posted 16 June 2006 - 10:21 AM
Posted 16 June 2006 - 10:34 AM
Posted 16 June 2006 - 11:59 AM
Posted 16 June 2006 - 01:55 PM
Something I've always been curious about... On the BT binoculars, does each objective have its own tube and then the pair of tubes is wrapped in the one piece housing? Or is the housing "open" with both light paths passing through it side-by side? Or maybe there is just partition between the two to prevent the possibility of off-axis light from one side affecting the other.
Posted 16 June 2006 - 05:59 PM
Posted 16 June 2006 - 06:01 PM
Posted 16 June 2006 - 08:05 PM
Posted 16 June 2006 - 08:31 PM
John, I guess if you have no vignetting with 24mm/70 deg AFOV eyepieces then a 20/84 combo should also not have any vignetting. I think I will save up for the BT45-100's since that should bridge the gap between my big binoculars and scopes with the Denk II.
joe i don't think you would have any vignetting with the 20mm, i use 24mms with a 70 degree field and have no vignetting, the bt80s and the bt100s use very large prisms.you could send them and i can try them out if you like. regards john
Posted 17 June 2006 - 03:24 PM
My next binocular will be the BT-100 45 from Kevin. He is great to deal with!
Bob in NM