Nagler 7mm Type 1 & 6

[The Mekon (John Briggs)]

I have just made an impulse purchase on ebay, snapping up what I thought was a Nagler 7mm type6 for $227. After I hit the pay button, I thought ‘did I check what type this eyepiece is?” Sure enough its a late type 1 – mint in box, but I am a bit concerned that it is not the later series. I have always been happy with my 9mm type 1, less so with the 4.8mm, but stoked with the 13mm type 6.
Anyone care to offer an opinion as to the merits of each type. 7mm type1 vs 7mm type6?
I had hoped to rationalise my eyepiece kit to 7, 13 Nagler and 27 panoptic, each one doubling the previous. Whether I will keep the 4.8 and 9, is yet to be determined.

[astro744]

Look at the Nagler Mythos report on Cloudy Nights>CN Reports>Eyepiece Reports.

The Nagler Type 1 is a fine eyepiece and you will find it performs well.

[ausastronomer (John Bambury)]

In it's day it was an outstanding eyepiece. Compared to some of the modern offerings, IMO it's a fair eyepiece. The newer eyepices like the 7mm Pentax XW, 7mm Nagler T6 and the 8mm Vixen LVW are a notch superior when compared under good observing conditions in a top quality telescope. By comparison the 7mm Nagler T1 is down on light throughput and contrast, it has more light scatter and has less eye relief. However it is still a very good useable eyepiece and if you don't have the others on hand to do a direct A/B comparison you will enjoy it. If you got value for money it's hard to say. I have seen these go for under $US100 on Astromart but the condition is an unknown. When they were discontinued by Televue about 5 years ago they cleared the last of the stock out for just over $US100 for a new one.

Cheers,
John B