Hi
I'm selling a
Zhumell Tachyon 25x100 binocular I bought 2 months ago directly from Zhumell in USA (shipped to me by FedEx). Because I bought them directly from Zhumell, it benefits from Zhumell 25-year no-fault warranty, although right now I'm not sure if this warranty can be transfered to you, have to find it out.
I believe this binoculars doesn't have collimation issues (please read my post below in this thread for the explanation).
I see everything in focus edge to edge. Moreover, I don't think there are color aberration issues, but as I never seen one, I can't honestly say about it.
The only details that don't allow me declaring it in perfect conditions are:
* A couple of very small scratches on the aluminum tripod adapter.
* A little bump on one edge of the aluminum hard case the case, that comes with this binocular.
* Inside the hard case, there is a depression, caused by the tripod mount. It was already there and I guess it was required to fit this bino in a case that clearly is not made just for this model.
NOTE That I thought was a tiny scratch on the left front lens, turned out to be just some dirt
hence I removed it as one of this bino minus.
This model has the same identical tech specs of the 25x100 binos sold under several brands (eg
1,
2,
3). They all comes from the same few specialized Chinese factories in the Yunnan province (have a look here
1,
2,
3).
I'm regretfully selling it for buying a dob. The view of night sky with this binocular are excellent for deep sky object up to magnification 8, although mag 6 to 8 are very feint. That's why I now need a dob...
You will definitively need a very sturdy tripod with this binocular (4.6 Kg), or make your own support. I made one which I recon is very efficient and relatively inexpensive,
I finally uploaded pics of my solution for a mount alternative to a tripod.
(basically the binocular hangs over my chair from a frame, which remove the binocular weight and allow me to use them like a very light binos free hands).
I ask $300 ONO for this binoculars which comes with its aluminum hard case.
I way prefer the buyer coming to check and pick it up. I can also ship it (I have all original box package) at buyer expense (box measures: 56cm, 32cm, 22cm, 8kg).
Giorgio
NOTE: I also added here a review by Phil Harrington published in the Astronomy magazine in March.
~~~~~ Tech data from
Zhumell website ~~~~
The Zhumell Tachyon 25×100 Astronomical Binoculars are a top-of-the-line choice for amateurs or industry professionals at a price that needn’t be focused on. The 100mm objective lenses offer an expansive field of view in which to enjoy the huge 25-times magnification. Craters on the moon and rings on planets are easily observed under the right conditions, and constellations will be visible in ways you didn’t think possible with binoculars. And since the Tachyon 25×100 takes 1.25-inch astronomical filters, you can enhance your enjoyment of the Moon, planets, and nebulae. Look up at the sky and see through fully multi-coated lenses with BaK4 prisms housed in a binocular with nitrogen-purged waterproof construction and individual eyepiece focus.
The locking aluminum case allows you to pack it up with confidence, knowing that bumpy roads or careless airline handling won’t damage the optics. Zhumell provides a 25-year no-fault warranty, so you’ve got the security to make an investment in your passion knowing that we stand behind our product.
SPECIFICATIONS:
Weight 164.8 oz.
Size Giant Binoculars
Eye Relief 15.44 mm
Waterproof Yes
Magnification 25x
Objective Lens Diameter 100 mm
Field of View @ 1000 Yards 157 ft.
Focus Type Individual
Close Focusing Distance 80 ft.
Exit Pupil 4 mm
Prism Type Porro
Twilight Factor 50
Best Uses Astronomy, Long Distance Terrestrial Viewing, Shoreline/Oceanfront Viewing