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mattz
professor emeritus
Reged: 12/03/06
Posts: 607
Loc: Where is Rescue CA?
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It's interesting that they are starting with 13mm. The 13 T6 is a real star in the Nagler lineup. Also, the Meade 14mm (close to 13mm) 4K was the star of that lineup. I wonder if that FL has some particular quality from an EP design point of view.
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Matt
Orion XT10i with Feather Touch and Paracorr
26T5 17T4
9, 7, & 5T6
Either 12T4 or 13T6, we'll see after the death match.
One homeless SV80S
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Larry Geary
sage
Reged: 09/24/06
Posts: 470
Loc: NJ, USA
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Quote:
I am wondering if Pentax is finally reacting !
They missed 82° and lagging behind again !
It would be interesting and inspiring what the Japanese could present.
From their small presence in the U.S., it seems that Pentax focuses their astronomical products on the domestic Japanese market. Their observing priorities, and thus equipment requirements, may be different from ours.
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Tom Trusock
Reged: 02/26/02
Posts: 27405
Loc: Alternate Reality (TM)
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Quote:
It's interesting that they are starting with 13mm. The 13 T6 is a real star in the Nagler lineup. Also, the Meade 14mm (close to 13mm) 4K was the star of that lineup. I wonder if that FL has some particular quality from an EP design point of view.
Well, it was the "first" nagler, and it's a good focal length in most telescopes.
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There are two theories to arguing with my wife. Neither one works.
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trainsktg
Post Laureate
Reged: 08/23/05
Posts: 4496
Loc: Pacific Northwest
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Quote:
Quote:
I am wondering if Pentax is finally reacting !
They missed 82° and lagging behind again !
It would be interesting and inspiring what the Japanese could present.
From their small presence in the U.S., it seems that Pentax focuses their astronomical products on the domestic Japanese market. Their observing priorities, and thus equipment requirements, may be different from ours.
From what I understand, 0.965" EP use is still quite common and many eschew using diagonals in refractors. Perhaps wide fields indeed aren't a priority.
Keith
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He was a good little monkey and always very curious.
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Lew Zealand
scholastic sledgehammer
Reged: 06/28/04
Posts: 768
Loc: Pasadena, CA
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Quote:
It's interesting that they are starting with 13mm. The 13 T6 is a real star in the Nagler lineup. Also, the Meade 14mm (close to 13mm) 4K was the star of that lineup. I wonder if that FL has some particular quality from an EP design point of view.
I've been looking for a 12-14mm EP for quite a while now as it gives about a 2mm exit pupil in my f/6 scopes and about the maximum mag for the average night in the SCT. One EP that works perfectly for both scopes.
I really like my current 12mm UO Konig for it's 60° FOV and especially it's very high transmission and contrast, however a larger FOV and better edge correction in the F/6 scopes would be a *very* nice upgrade. My second Televue EP (after my rarely used 4.8mm T1 Nagler) will probably be the 13mm Ethos.
Assuming it's ~$500.
And yes, the 13mm T6 Nagler was at the top of my list before I read this thread.
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8" LX90, StarBlast 6", 100mm f/6 achro, 60mm f/5.8 achro, 60mm f/11.7 achro, 10x50s, 15x70s
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galaxyman
Pooh-Bah
Reged: 04/04/05
Posts: 1171
Loc: Limerick, Pa
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Quote:
Quote:
It's interesting that they are starting with 13mm. The 13 T6 is a real star in the Nagler lineup. Also, the Meade 14mm (close to 13mm) 4K was the star of that lineup. I wonder if that FL has some particular quality from an EP design point of view.
I've been looking for a 12-14mm EP for quite a while now as it gives about a 2mm exit pupil in my f/6 scopes and about the maximum mag for the average night in the SCT. One EP that works perfectly for both scopes.
I really like my current 12mm UO Konig for it's 60° FOV and especially it's very high transmission and contrast, however a larger FOV and better edge correction in the F/6 scopes would be a *very* nice upgrade. My second Televue EP (after my rarely used 4.8mm T1 Nagler) will probably be the 13mm Ethos.
Assuming it's ~$500.
And yes, the 13mm T6 Nagler was at the top of my list before I read this thread.
If you want the best eyepiece in this focal range, so far for me it's the 14mm Denkmeier. An outstanding eyepiece.
Karl
E.O.H.
Chesmont Astronomical Society
22" f/4.5 Dob
12.5" f/4.8 Dob
8" f/9 refractor (The Beast)
6" f/6.5 refractor (Mini-Beast)
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So many galaxies, so little time!
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Lew Zealand
scholastic sledgehammer
Reged: 06/28/04
Posts: 768
Loc: Pasadena, CA
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I've just started reading about the Denkmeier 14mm EP here and other places - it sounds quite promising!
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8" LX90, StarBlast 6", 100mm f/6 achro, 60mm f/5.8 achro, 60mm f/11.7 achro, 10x50s, 15x70s
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Tom Trusock
Reged: 02/26/02
Posts: 27405
Loc: Alternate Reality (TM)
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Well, if you want one, you might want to get one. I talked to Russ at NEAF, and he said they have a limited amount of lens sets left and they may not re-order. Evidently that one is a bear to get together cleanly and correctly.
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There are two theories to arguing with my wife. Neither one works.
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Joe Bergeron
Vendor - Space Art
Reged: 11/10/03
Posts: 845
Loc: Upstate NY
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I wear thin glasses, and I was able to see the full field while wearing them. The eye relief certainly seemed like a full 15mm to me. Certainly more than the 12mm of the Nagler Type 6.
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Seven telescopes of a diverse nature.
Multiple chums glittering in the sky. New friends await.
My Web Site
English Lessons for Amateur Astronomers
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Bob W6PU
Carpal Tunnel
Reged: 12/23/04
Posts: 2191
Loc: Springer-N.E.NM
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 Re: "English lessons for astronomers"
Hilarious Joe, I think we need this as a permanent "sticky" on CN forums!
" I say sir, have you been to school?"
"What do you tike me for a fool""
Professor Henry Higgens in My Fair Lady.
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