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Albie
Post Laureate
Reged: 02/22/05
Posts: 3520
Loc: Alberta,Canada
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Re: 16mm Nagler Type 5 1.25" or 17mm Nagler Type 4
08/09/08 11:32 AM
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I had the 17T4 and sold it to get the 16T5(because I was curious) and I have no regrets at all.The 16T5's small size and weight make it very easy to use/handle.It is a very sharp and contrasty ep perhaps more so than the 17T4.The 17T4 had a slightly more immersive(spacewalk) feel to it and that's all it had over the 16T5 for me.
Even though the 16T5 has less eyerelief(10mm) than the T6's(12mm) I find it much easier to use.You just plop your eyeball into the eyeguard and view,no blackout issues at all.The T6's as well as the T4's can be a little tricky at times to get optimal eyeplacement without blackout problems.Out of the 7 naglers I've owned (5,7,9,13,16,17 and 26) I would place them in order of preference 26T5,16T5,13T6,17T4,5T6,7T6 and 9T6.The 9 is last because it seems trickier to use,blackout issues although really not that serious.
Either eyepiece is excellent so in my mind it boils down to eyerelief needs and weight issues.
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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
Edited by Albie (08/09/08 11:37 AM)
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