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BW-Optik/Zeiss 30mm UWA AFOV 85 degree

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#1 Tamiji Homma

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Posted 26 May 2009 - 11:08 AM

Hi all,

Search didn't turn out much.

Does anyone have experience with it?
Please share your experience.

I am interested in how it stands up against Nagler 31 and Leitz 30 if it is possible.

Thanks.

Tammy

#2 Lawrence Sayre

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Posted 26 May 2009 - 05:30 PM

This is all that I could find. Scroll down about half way on the page that I have linked below.

APM info on BW-Optik/Zeiss 30 mm 85 deg.AFOV eyepiece

#3 Tamiji Homma

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Posted 27 May 2009 - 12:13 AM

Hi Lawrence,

Yes, that's one. I placed an order. I'll find it myself.
I'll report back here when I get a chance to compare with 30mm-ish eyepieces. No, I don't have neither Nagler 31 nor Leitz 30 to compare but I can do with UWAN 28, Tak LE 30, Paragon 30, Hyperion 31, RKE 32, TV PL 32.

Tammy

#4 erik

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Posted 27 May 2009 - 12:57 AM

Wow, that looks interesting. Looking forward to hearing how it performs. :)

#5 Tamiji Homma

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Posted 29 May 2009 - 10:51 AM

Wow, that looks interesting. Looking forward to hearing how it performs. :)


It is here. It has unique look, as APM America web site describes research equipment look :)

From left to right, UWAN 28 (957 grams), BW/Zeiss 30 (771 grams), Ethos 17 (721 grams), and TMB Supermonocentric 7 (56 grams) for size comparison.

Posted Image

It looks like BW/Zeiss 30 coating is inferior to others.
I see more reflection from eye lens.

Posted Image

I haven't done first night light yet except terrestrial viewing. BW/Zeiss 30 is easy to look through (good eye relief), noticeable field curvature with f/7.5 refractor.

My intention is to use this with Vixen VMC 260L f/11.5. I hope it performs well under night sky.

Tammy

#6 kroum

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Posted 29 May 2009 - 01:40 PM

Is there any functionality to the square part of the EP, or does it simply hold the 2 "halves" of it together?

#7 Tamiji Homma

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Posted 29 May 2009 - 01:54 PM

Is there any functionality to the square part of the EP, or does it simply hold the 2 "halves" of it together?


No, I don't find any good use of the square 2" adapter. It must be coming from original research equipment requirement or something.

Tammy

#8 arnaud18

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Posted 11 May 2012 - 02:04 PM

hi every body

tammy , no news about the zeiss ;-)

#9 Tarzanrock

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Posted 11 May 2012 - 04:26 PM

Tammy:
I'll loan you my Nagler and Leitz for the shoot out. PM me when you want to get together or send me an e-mail.
Best regards,
Bill

#10 Richard Low

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Posted 11 May 2012 - 09:32 PM

When Tammy said that this BW-Optik/Zeiss 30mm eyepiece has inferior coatings and noticeable field curvature in a f/7.5 refractor, frankly i dont have high hopes on this eyepiece at all.

#11 Scott99

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Posted 13 May 2012 - 04:46 PM

cool! I have seen that for years on the website and wondered what it would be like. Indeed the coatings do not look good next to late-model TV. But it's still Zeiss!


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