Image of the day

From the
ATWB Customer Gallery

My First WOW image

My Account

New to Astromart?

Register an account...

Need Help?

12mm T4 vs 13mm T6 vs 8" SCT

Started by mxb, 02/06/2004 04:14AM
Posted 02/06/2004 04:14AM Opening Post
I've been thinking about the 12mm Nagler Type 4 or the 13mm Type 6 for use in my 8" SCT. Currently, I use a 16mm T5 as my 'high' mag DSO ep, but sometimes I'd like to go just that bit more for fainter objects. I have another Type 4, so I'm familiar with the characteristics of that type. Anyone had a chance to look through both? Opinions?


BTW, it would also serve in an f/5 refractor.
Posted 02/06/2004 06:36AM #1
I have a 13mm T6, but no T4's. From what I understand from others, the T6's are lighter, smaller, and cheaper, but with less eye-relief than the T4's. Some people say they feel more "immersed" in the view in the T4's, but it is very subjective (some people have said they prefer the T6). I chose the T6 for the price and weight issues. Both are excellent eyepieces, though. The T6's have 12mm of eye-relief, which I find comfortable. If you prefer more eye-relief, you might want to go with the T4. Probably no way to tell for certain without actually looking through them - try to get to a star party so you can see for yourself.

Jarad
Posted 02/06/2004 10:20AM #2
I have the 12mm and I did have the 13mm. I sold the 13mm and kept the 12mm.
I used both in a NS8GPS and a 15" f/4.9 DOB so I think it is a bit like your situation.
The 13mm is small and if balance is a consideration it could be the better EP. The 12mm is better in my oppinion for viewing. I liked it better anyway.
Floyd

[SIZE="Large"][/SIZE][COLOR="Blue"][/COLOR] Floyd Blue grin
Amateur Imager
Posted 02/06/2004 12:05PM #3
I have both. If binoviewing is in your future, get the 13. If not, the 12 gives a better observing experience.