ICEINSPACE
Moon Phase
CURRENT MOON
Full Moon 100%
|
|
09-09-2010, 08:49 PM
|
|
Registered User
|
|
Join Date: Aug 2009
Location: perth w.a.
Posts: 2,275
|
|
i think you could easily check the size of a dark adapted pupil with a red torch and an opticians P.D. rule (pupilliary distance)
i have used this rule every day of my life for thirty years being a dispensing optician
you could easily measure it to a tolerance of at least a quarter of a millimetre no fanct tools required and extremely accurate
during daylight hours on occasions during spectacle "marking up" i have noticed some pupils dilated more than others
this may be the same at full dark adaption and you could then observe with the largest pupil
on another similar subject i myself used to observe with my right eye only until recently when an subsequent eye test revealed that my right eyes astigmatism has increased from a half dioptre to a full dioptre
so what did i do? i observe now with my left eye which is only a quarter diotre of astigmatism! blacker skys and more pinpoint stars
the brain admittedly decided it was all wrong but it got over it!
pat
|
12-01-2012, 05:44 PM
|
Registered User
|
|
Join Date: Dec 2009
Location: Canberra
Posts: 688
|
|
I just recieved my very first TV eyepeice, a TV Nagler 31mm Type 5 (Thanks Tony!).
I am eager to test how this will perform with my Mewlon 300. However as I look out the window I see clouds rolling in :-(
|
07-02-2014, 11:47 PM
|
|
Thylacinus stargazoculus
|
|
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,203
|
|
For me, with my Celestron 8 set almost permanently at f/6.3 thanks to the focal reducer/corrector, I've found the best balance is a 32 mm Plossl and 3 Naglers - the T6 9 mm, T6 11 mm and T5 16 mm. I really like the trade-offs with these eyepieces - about 1/2 the price of the Ethos, 1/3 of the weight, and yet still Televue quality and an 82 degree AFOV.
Combined with a 2 x Barlow or a 2.5 x TV Powermate, I've got it covered!
|
08-02-2014, 01:08 AM
|
|
Ebotec Alpeht Sicamb
|
|
Join Date: Feb 2010
Location: Toongabbie, NSW
Posts: 1,965
|
|
Wow, a seven year old thread, still alive! That says something for the mind share of Naglers...
I myself have never seriously considered any of the Naglers, and seeing what else is on offer in 2014 I likely never will. I'm very partial to the TV Delos family however, and will probably buy into that line some more.
I'm just not a fan of AFOVs that I can't take in without rolling my head around or getting uncomfortably close to the eye lens. I feel disoriented if I can't see the field stop all around. The Delos 72º field is the sweet spot for me. Viewing comfort is far more important to me than correction at an edge that I'm unable to see anyway.
Thankfully there are quite a few premium and comfortable to use eyepieces in the up to 72º range, some of them (like the Pentax XF, or ES 68º) at very attractive prices.
Cheers
Steffen.
|
15-02-2014, 01:09 PM
|
Registered User
|
|
Join Date: Feb 2009
Location: Sydney
Posts: 1,217
|
|
Ironically, my favourite Nagler isn't even on the list - the 3-6 Nagler Zoom!
After that I would have to vote for the 31mm
|
08-12-2015, 03:45 PM
|
|
Registered User
|
|
Join Date: Sep 2015
Location: Melbourne
Posts: 11
|
|
I have several Naglers however I feel that the 17 is absolutely amazing. Its ergonomics and its view is brilliant
|
15-01-2016, 09:26 AM
|
Cygnus X-1
|
|
Join Date: Dec 2004
Posts: 366
|
|
12mm Nagler T4.
|
16-01-2016, 12:43 AM
|
Registered User
|
|
Join Date: Nov 2010
Location: sydney
Posts: 1,363
|
|
Im with Steffen and some others when it comes to the type 6 naglers.
Having owned all of them and still possessing some , I have to say that
the Deloi that I have , and sold are a step up not only in comfort , but
in sharpness and clarity as well; so I expect all my next ep's will be
more deloi/delites or maybe some of the new baaders!
The 13mm, 5mm , 3.5 and 9mm in that order were my favs
cheers bigjoe
Last edited by bigjoe; 16-01-2016 at 12:48 AM.
Reason: add
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT +10. The time is now 07:33 AM.
|
|