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xcy
super member
Reged: 05/15/06
Posts: 188
Loc: Europe
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What will be the best choice between the Barska Cosmos 20x80 and the Helios Quantum-4 20x80 (triplet)?
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charen
Pooh-Bah
Reged: 05/28/05
Posts: 1083
Loc: New Zealand
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They are both Kunming-United BA4 and BA3 series binoculars and are sold under other names.
The Basksa Cosmos are lighter at 2.5 Kgs
The Helios Quantom 4's are Triplets and are heavier at 3.17 Kgs.
[When tripod mounting this is not as important.]
The 20x80 triplets display slightly less CA and a mildly flatter field.
The 20x80 triplet has a clear aperture of 74-75 mm.
The Barska Cosmos 20x80 model [with the metal cover of the prism/eyepiece housing] has a 70 mm clear aperture.
The Helios / Garrett / Oberwerk 20x80 triplets are more a of a known optical and build quality.
However the 'triplet design' does not neccessarily make it automatically superior. Q. and A. is important here.
I have a 20x80 Triplet and have used a 'clone' 20x80 Bosma.
I would choose the triplets - if the price difference is not marked.
http://www.united-optics.com/Products/Binoculars/Giant_Binoculars/Giant_Binoculars.html
Chris
35 binos.
80mm Cat.
WO66ED
SV NH 80mm / EQ3
Meade 8in.LX90
Skywatcher Equinox ED120 / Goto HEQ5.
Edited by charen (09/21/09 05:15 AM)
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xcy
super member
Reged: 05/15/06
Posts: 188
Loc: Europe
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Are the Basksa Cosmos the same as the Helios Quantum-3?
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charen
Pooh-Bah
Reged: 05/28/05
Posts: 1083
Loc: New Zealand
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The Barskas are the BA4 versions. The Helios are the BA3 versions. However each binocular seller may order slightly different optical and build specs. of that model from Kunming United which they then onsell. This may include different lens coatings / eye cup design / I.F. or C.F. etc.
Chris
--------------------
35 binos.
80mm Cat.
WO66ED
SV NH 80mm / EQ3
Meade 8in.LX90
Skywatcher Equinox ED120 / Goto HEQ5.
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xcy
super member
Reged: 05/15/06
Posts: 188
Loc: Europe
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The Helios-3 seem like the BA4 (Barska Cosmos) and the Helios-4 like the BA3. Can anyone confirm this?
HELIOS QUANTUM-3
HELIOS QUANTUM-4
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KennyJ
Reged: 04/27/03
Posts: 12895
Loc: Lancashire UK
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It could be that 4 is considered an unlucky number is some places , including in Leatherette ! :-)
Kenny
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If everyone is thinking the same thing , no-one is thinking - General George S.Patton
Zeiss 7 x 42 BGAT
Captain's Helmsman 7 x 50
Nikon 10 x 42 Superior E
Swift Audubon Kestrel 10 x 50
Helios 15 x 70 Observation
Strathspey 20 x 90
Televue 76 APO
Zeiss 85 Diascope
Helios 102 f5 refractor
Various eyepieces barlows tripods mounts etc.
Panasonic Lumix DMC - TZ5 digital camera
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KBK
member
Reged: 08/05/09
Posts: 67
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I just took possession of a set of the cheaper 20x80 Barska binos, the X-Trail model. I wanted to check the brand out. Might have been a bad choice as my mini review is:
Not so hot. OK for direct daytime use. Not modifiable, generally speaking, the optics package (objective) is glued. Nearly 100% plastic in assembly. Not good -Not to me, anyway. Whatta yah want for $100? I paid $40 for a used pair as I was just ..curious.
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It is the image of the ungraspable phantom of life; and this...is the key
to it all.
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