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35mm Panoptic, 34mm 68° Explore Scientific, and .....31mm Celestron Luminos

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#1 Daniel Wood83

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Posted 25 November 2021 - 01:09 AM

Read the 3 other post I "searched" about this. 

 

Obviously the Celestron is undisputably in 3rd place. Seems some are very against this line of eyepieces. 

 

So between televue and ES I'm looking for actual testimony from folks who have used both specifically in a F5 Newtonian. 

Also maybe how well a Luminos 31mm might look as a budget piece knowing aberrations will be more than the others. 

 

 

Celestron Omni XLT 150. 



#2 Redbetter

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Posted 25 November 2021 - 02:22 AM

The ES 68's made good sense when they were a fraction of the cost of Panoptics, but I don't see the point now that the prices are essentially equal. 

 

The one advantage for ES would be the sealed design, particularly if an eyepiece is left out exposed in the holder to collect large droplets of dew in a humid environment.


Edited by Redbetter, 25 November 2021 - 03:31 AM.

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#3 Voyager 3

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Posted 25 November 2021 - 02:53 AM

I see the prices aren't changed in some places in EU . Or do they charge the increased price during payment and haven't updated the prices ? 



#4 Jon Isaacs

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Posted 25 November 2021 - 04:52 AM

My two cents;

 

The 31 mm Luminos is $270-$290.  Eyepieces like the APM 30 mm 70 degree UFF and the Meade 28 mm PMA are less expensive but significantly better eyepieces. I have both the 30mm APM UFF and the 35mm Panoptic as well as the 31mm Nagler.  

 

The 30mm APM has a field stop of 36.3mm versus 38.7 for the 35mm Panoptic, that's about 7% greater but in your F/5, it's a 7mm exit pupil versus a 6mm for the APM... for most uses, the 30mm with it's 6mm exit pupil is a better fit.  The APM is also noticeably lighter and more compact. Both are very sharp across the field.  I use the 30mm APM more often than the 35mm Panoptic.

 

I have used the 34mm ES 68 degree but not extensively.  It's generally acknowledged as not being as sharp across the field as the 35 mm Panoptic. I had the 23mm Luminos, not in this league, lots of EoFB, edge of field brightening.  

 

Jon

 

 


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#5 Tank

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Posted 25 November 2021 - 06:02 AM

Of these three in basic terms
Luminous poor
ES very good
Pan Great

Had them all
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#6 25585

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Posted 25 November 2021 - 07:03 AM

If you find a 31mm Celestron Axiom LX, it is as good as the 31 Nagler in F5 scopes, with more eye relief and easier exit pupil attainment, less finicky. 


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#7 davidgmd

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Posted 25 November 2021 - 10:43 AM

My two cents;

 

The 31 mm Luminos is $270-$290.  Eyepieces like the APM 30 mm 70 degree UFF and the Meade 28 mm PMA are less expensive but significantly better eyepieces. I have both the 30mm APM UFF and the 35mm Panoptic as well as the 31mm Nagler.  

 

The 30mm APM has a field stop of 36.3mm versus 38.7 for the 35mm Panoptic, that's about 7% greater but in your F/5, it's a 7mm exit pupil versus a 6mm for the APM... for most uses, the 30mm with it's 6mm exit pupil is a better fit.  The APM is also noticeably lighter and more compact. Both are very sharp across the field.  I use the 30mm APM more often than the 35mm Panoptic.

 

I have used the 34mm ES 68 degree but not extensively.  It's generally acknowledged as not being as sharp across the field as the 35 mm Panoptic. I had the 23mm Luminos, not in this league, lots of EoFB, edge of field brightening.  

 

Jon

No personal experience yet but FWIW I just bought an APM 30 mm UFF for my f/5.4 scope based on the above reasoning.



#8 Jon Isaacs

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Posted 25 November 2021 - 11:09 AM

No personal experience yet but FWIW I just bought an APM 30 mm UFF for my f/5.4 scope based on the above reasoning.

David:

 

I have an NP-101. The 30mm UFF is a good match for the NP-101.. Not as wide as the 31mm Nagler but plenty wide and plenty sharp.. and about $450 less expensive.. 

 

The 31mm Nagler is a fantastic eyepiece but it's a big, heavy chunk.  The 30mm UFF, is slightly more than half the weight (550grams versus 1000 grams) and nearly as wide a field of view.  To show the size difference:  The 31mm Nagler, the 30mm APM and a 32mm Celestron Plossl.

 

IMG_16102021_063438_(1024_x_700_pixel).jpg
 
I am glad I have the 31mm Nagler but I am also glad I have the 30mm APM... 
 
Jon

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#9 davidgmd

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Posted 25 November 2021 - 03:33 PM

Thanks Jon. I’ve been waiting 5 months on a 31 Nagler. Finally gave up and ordered the 30 UFF. A lot lighter and less expensive, as you note. I suspect I’ll be happy enough with it not to "need" the 31 Nagler.


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#10 sevenofnine

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Posted 26 November 2021 - 08:26 PM

At one time I was considering the ES 34/68 (24 oz.) until I read the weight. I chose the ES 28/68 (16 oz.) instead. I am glad I did, it's a very nice eyepiece and putting such a large and heavy eyepiece on a small 8" Dob didn't make sense to me hmm.gif


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