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S/V B85 or Oberwerk 20x80 Deluxe

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#51 chascar

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Posted 04 May 2005 - 12:48 PM

Ed I am probably driving you crazy I know CA can either mean clear Apeture or chromatic aberration in this case which is it in refrence too... thanks

#52 EdZ

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Posted 04 May 2005 - 12:59 PM

Well stopping down a lens is sure not a benefit to clear apaerture. It reduces aperture.

Stopping down the lens increases the focal ratio and may therefore help reduce chromatic aberration.

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#53 Craig Simmons

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Posted 04 May 2005 - 01:00 PM

Chromatic Aberration.

#54 chascar

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Posted 04 May 2005 - 01:15 PM

I just wasn't sure I recall there was some issue with SV 80 when they first came out about the actual aperture claims due to baffeling of the tube and light path (think it was Sky telescope review) so I was questioning if the claim before masking was 90 and it wasn't correct could the masking to 85 guarantee a true 85 mm aperture. so excuse me thanks for the clarification

#55 chascar

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Posted 06 May 2005 - 01:25 PM

Are SV 15x63 binos at all practicle as hand held and I've seen some comments the Obie 20x80 LW might be as well or at least be mountable on a solin camera tripod

#56 EdZ

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Posted 06 May 2005 - 01:35 PM

IMO, LW 20x80 binocs still need a tripod head rated for at least 6-8#.

Holding a 15x binocular might not be a weight issue so much as a magnification issue. Quick looks, OK. Observing, NO.

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#57 Craig Simmons

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Posted 06 May 2005 - 01:54 PM

I don't consider the SV 15x63 to be hand holdable. You really need a mount of some kind.

#58 Guest_**DONOTDELETE**_*

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Posted 06 May 2005 - 02:02 PM

For astronomy, most definitely not hand holdable. I would even go so far to say that no bins are hand holdable for astronomy IMO. I like the FOV to be as still as possible.

#59 Apracticalguy

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Posted 13 May 2005 - 02:45 PM

Let's keep this discussion going!

Thanks

#60 chascar

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Posted 13 May 2005 - 06:42 PM

Hi all was at work training for last 8 days so i was not able to check in. Thanks Ed ,Craig and Nightwatch for your feed back on hand hold ability. Well its decission time and abivilance has to go. I would like to get your opinions though on what you think my best option is I am torn between the 20x 80/85s and the 15x63. I know I want astronomical binos (this will be there primary if not only use. I have a nice old pair of 7x50 nitrogen filled seahawks. and they are not going anywhere soon and I am afraid of either getting to much or to little with this purchase. I need them to be grab and go interms of camping and ease of use, but with enough juice to keep me from wanting my scopes when caping with the family.

#61 chascar

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Posted 13 May 2005 - 06:44 PM

WOW sorry for the spelling and grammar my two daughters tugging on me and typing don't mix I guess

#62 Guest_**DONOTDELETE**_*

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Posted 14 May 2005 - 07:32 AM

Chascar, seems like you want bins that can do it all. Kinda for astronomy. Kinda for terrestrial viewing. Kinda grab and go. Well, if this is the case, given your choices the 20x80/85 bins are the way to go. They're not that heavy, but you would need a tripod...which I would have recommended anyway for the 15x63 given your usage description. I love my deluxe II. They're a nice. They provide a nice blend of light grab and portability.


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