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Looking for a planetary killer, televue plossl, BCO, Radian, thoughts?

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#26 Starman1

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Posted 18 September 2019 - 06:31 PM

Typically, eye relief on a Plössl is about 72% of the focal length.

You can figure out why an 8mm Plössl feels "tight".


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#27 scotsman328i

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Posted 18 September 2019 - 06:40 PM

Some of the best Planet Killers I’ve ever owned and/or looked through were University Optics volcano top Orthoscopics. Granted they don’t make them anymore, but I’ve been learning a few other companies do make Orthoscopics and I’d say try one out sometime. You’d be amazed!


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#28 Miranda2525

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Posted 18 September 2019 - 08:50 PM

I forgot to mention binoviewers! IMO, planetary detail in binoviewers trumps a single eyepiece every time.



#29 izar187

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Posted 18 September 2019 - 09:44 PM

Consider SS3's.

https://www.sieberto...rtho page).html


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#30 noisejammer

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Posted 18 September 2019 - 10:53 PM

Although it won't fit in your $130 budget, I'm another believer in binoviewers. Unfortunately, they tend to make your eyepiece collection double.

 

Like Don, I'm a total believer in seeing being king. Depending on where you live, you may only get a 400x sky for a few hours every year (and half of those you'll be sleeping.) Of course, some places - those far from the jet streams - are more lucky.



#31 dmgriff

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Posted 19 September 2019 - 08:46 AM

The OP mentioned 

 

11mm Televue Plossl

10mm BCO

 

I have both and in my useage (at around f/8 and above) the TV plossl outperforms the BCO. I put the BCOs (I have the 18,10mm)  at the bottom in overall performance when compared to my Japanese orthos/plossls.

 

My useage suggests to me a ranking of:

 

Brandon Orthoscopics (USA, about 255usd each)

 

Takahashi Abbe Orthos (Japan, about 155usd each)

 

Televue Plossls, UO/Fugiyama/KK Orthos (Japan, about 100usd each)

 

Baader Classic Orthos (China, about 80usd each)

 

 

and note that ranking happens to reflect the price. Sometimes you do get what you pay for.

 

 

Good viewing,

 

Dave


Edited by dmgriff, 19 September 2019 - 09:19 AM.

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