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pdfermat
super member
Reged: 11/12/07
Posts: 147
Loc: Wisconsin
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What's the conventional wisdom on Barlowing a Nagler? I'm looking at the 13T6, because it would give me a nice native mag at 92x, and a nice higher power mag Barlowed at 184x. If I were just getting one for the native magnification, I would probably go with the 11T6, since that's about the power I tend to enjoy a lot of objects at. When considering a Nagler, do most people get them for primarily their native magnifications? If you Barlow one, is that kind of like putting a junky set of tires on a premium automobile?
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Pat
Orion XT8i
TV 32mm, 25mm, 20mm, 15mm Plossls
Orion Shorty-Plus Barlow
DGM NPB Filter
Lumicon Deep Sky Filter
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John F
sage
Reged: 02/16/04
Posts: 308
Loc: Washington State
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I've barlowed several Type 6 Naglers with the Tele Vue 2.5x Powermate and with a Tele Vue 2.0x Barlow and never noticed any degradation in performance. Using the Type 6 Naglers (and also the 16mm T5) is a very cost-effective way to get more milage out of your eyepiece investment.
John Finnan
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Leica 7x42 Ultravid
Nikon 7x50 Prostar
Swarovski 8.5x42 EL
Nikon 10x70 Astroluxe
Leica 12x50 Ultravid
Zeiss 15x60 B/GAT
Takahashi 22x60 Astronomer
NP-127 w/Bino Vue
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Lamb0
professor emeritus
Reged: 07/25/07
Posts: 668
Loc: Fairbury, Nebraska
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 Naglers Barlow exceptionally well! 
 My most used eyepiece is the 20T5 with or without the 2X Powermate. 
 A Barlow, (or Powermate, telextender, etc.), allows more bang for the buck out of my wonderful, if expensive Nagler. I had been considering a 1.6X Barlow too, but the 2" 1.6x, 2.5x, 3.2x Telecentric Wheel: $349 For 2"EP's looks exceptionally interesting. 
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John "Have eyepiece - will travel!"
8" f/5 Dob w/2.14" sec in a 12" alum tube 'The Mortar' - w/PCorr 2° TFoV @ 36.5X ~70% illum *NICE*
Typical eyepieces: 32 Burg, 24 Pan, 20T5, 5-8 SW, Others ALL 2": Pcorr, 2X PwrMt, Ast H-b, Lum UHC + OIII
60mm $50 Walmart Special in training - aka "Backpack Observatory"
Minolta Activa 12x50 , Steiner 15X80
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helpwanted
Carpal Tunnel
Reged: 07/04/07
Posts: 1757
Loc: Phoenix, AZ
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isn't the Antares 1.6x barlow a fan favorite amount Ethos and Nagler users?
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Edwin Quiroga
sage
Reged: 01/31/08
Posts: 211
Loc: Miranda, Venezuela
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My Nagler 16 T5 is so good, native and balowed with a TV barlow, that I don`t have the urge of upgrading to Ethos 13 and 8.
Such is my opinion.
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Lamb0
professor emeritus
Reged: 07/25/07
Posts: 668
Loc: Fairbury, Nebraska
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Quote:
isn't the Antares 1.6x barlow a fan favorite amount Ethos and Nagler users?
Yes, for good reason, but I still like the the idea of 2.5X and 3.2X in addition to 1.6X - plus, the Telecentric is a 4 element design as opposed to a simple 2 element achromat. 
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Albie
Post Laureate
Reged: 02/22/05
Posts: 3520
Loc: Alberta,Canada
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I've barlowed the 5,7,9 and 13mmT6's and the 16mmT5 using a Celestron Ultima 2x barlow.No complaints at all other than I would like to try a Televue 2x barlow to see if or how much better it might be over my Celestron Ultima barlow.
They barlow quite nicely.
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Skywatcher 10" f/4.7 Dob with Moonlight CR1
Televue 2x barlow and 5T6,7T6,9T6,16T5 and 26T5 Televue Naglers.
SkyMaster 15x70,Regal LX 8x42 and Noble 10x28
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Lawrence Sayre
Post Laureate
Reged: 10/16/04
Posts: 3704
Loc: N.E. Ohio
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I agree! The 16 mm T5 and the several T6's that I once owned all Barlowed excellently.
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My philosophy, in essence, is the concept of man as a moral being, with his own happiness as the moral purpose of his life, with productive achievement as his noblest activity, and reason as his only absolute.
Ayn Rand (in the appendix to 'Atlas Shrugged')
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j3ffr0
sage
Reged: 07/06/08
Posts: 234
Loc: Virginia
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As long as you use a good barlow. I use an Orion Ultrascopic 2x and it works well for me with my 13 and 9 T6s. I'm thinking of adding a TV 3x or 2.5 powermate to have even more options. It is not out of the question to double barlow if you have two!
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10" Dob
127mm Mak
PST
35, 24 Panoptic; 16, 13, 9 Nagler
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F.Meiresonne
Carpal Tunnel
Reged: 12/22/03
Posts: 2957
Loc: Eeklo,Belgium
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To be short : You sure can barlow a T6, but the eyeposition gets a bit more difficult, but it can be done without much difficulty.
This said barlowing my Pentax 10XW goes alot better as if there were no barlow at all...
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Freddy Meiresonne
Obsession 18 inch #1638
Orion Optics 8 inch F/4.5 -1/8 wave optics -Vixen GP-E
20x80 Helios Stellar Binos
10x60 Helios Quantum 4(= Obie Mariner)
10x50 Helios Nature sport plus
8x40 Helios Nature sport plus
Eyepieces in use :Pan 35,24,19, N13T6, Pentax 10 XW, N9T6, Ultrascopic 7.5, TV2, baader ortho 12.5 and 9 mm
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