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Equipment Discussions >> Eyepieces

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Starman1
Vendor (EyepiecesEtc.com)
*****

Reged: 06/24/03

Loc: Los Angeles
Re: Owl TMB Planetary Eyepieces new [Re: walter david]
      #6040643 - 08/22/13 06:52 PM

To the "similar" eyepieces already listed, add the Olivon HD 58 degrees, and the Barsta 58 degrees. It looks like this design is becoming more widely distributed.

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cjc
sage


Reged: 10/15/10

Loc: Derbyshire, England
Re: Owl TMB Planetary Eyepieces [Re: Starman1]
      #6041226 - 08/23/13 04:32 AM

Indeed this series of eyepieces is sold under a number of names with (in the UK) Sky-Watcher now marketing some Planetary models. However it is perhaps worth restating that the eypieces from different suppliers, although largely to the same optical design, are not functionally identical. In particular some models lack the baffling thread on the barlow assembly or the internal barrel or the threading may be bright and so ineffective. There are two different optical designs for the 9mm. I also have examples where the lens coating is not consistent across eyepieces in the same range. They are largely being built to a price rather than an optical standard, I think

The model which had fewest issues was from Astronomics, but this range is no longer available, I understand.


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E_Look
Post Laureate


Reged: 03/06/08

Loc: near New York
Re: Owl TMB Planetary Eyepieces new [Re: cjc]
      #6046149 - 08/25/13 10:54 PM

I wonder if the authorized TMB Planetary series will be available again!

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Scanning4Comets
Markus
*****

Reged: 12/26/04

Re: Owl TMB Planetary Eyepieces new [Re: E_Look]
      #6046375 - 08/26/13 03:47 AM

Buy something better. They are only good for door stops.

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Jon Isaacs
Postmaster
*****

Reged: 06/16/04

Loc: San Diego and Boulevard, CA
Re: Owl TMB Planetary Eyepieces new [Re: Scanning4Comets]
      #6046423 - 08/26/13 05:09 AM

Quote:

Buy something better. They are only good for door stops.




The other night I was out with my new to me, 13.1 inch F/5.5 Starsplitter enjoying the night sky. I was using my TMB Planetary's, they did a good job, nice amount of eye relief.. quite nice images of Saturn, some nice splits... some nice views of globulars and open clusters.

Jon


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E_Look
Post Laureate


Reged: 03/06/08

Loc: near New York
Re: Owl TMB Planetary Eyepieces new [Re: Scanning4Comets]
      #6050544 - 08/28/13 11:50 AM

Actually I have the whole series, not the version II's, and I quite enjoy using them. As Jon has alluded, the image is fairly sharp across the whole field and very good on axis. I don't get any of the glare, ghosting, etc. problems I've heard about. Even the one chrome-barreled version one, the 7 mm, a Burgess-TMB, is very good. I think there is a difference between the real things and the knock-offs.

Quote:

Buy something better. They are only good for door stops.




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bogg
super member


Reged: 11/17/09

Loc: Bruce County Ontario
Re: Owl TMB Planetary Eyepieces new [Re: E_Look]
      #6051468 - 08/28/13 08:43 PM

I have the whole series as well. They have been very good. I find that they work well with the Orion 110 mm. They do show a bit of CA when used in a TV Genisis. I have a Delos which does not show this. For the price they are hard to beat.

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