Tele Vue 13mm Ethos
Posted 10 June 2007 - 10:55 PM
Given what Ethos is purported to do, I think it could be a very long time before something better comes along.
One possibility is that TeleVue might take the Ethos design and adapt it to an 82 degree field, creating a Nagler Type 7. Giving up the extra AFOV might yield more eye relief. That might be of interest to those who say they don't want or need a 100 degree AFOV but like other aspects of the design. TeleVue did something similar when they used technology developed for the Radian to create the Nagler Type 4.
Posted 11 June 2007 - 03:37 AM
Posted 11 June 2007 - 03:04 PM
(Quote) There is no "magic" to building a super-wide FOV eyepiece. Al Nagler once showed me how to make your own 100 degree FOV unit: unscrew the barlow from the bottom of a Radian. (End quote)
Of course, not. Why do you think it took Nagler almost a decade to come up with a working prototype? As Ed Ting continues:
"The challenge is making a wide FOV eyepiece that's sharp to the edge."
Hence the wider air spaces and possible asphericity (doubt that, I have my money on the "unbarlowed" Radian design with minor changes. This will explain the light weight, too!).
In any case, a MUST have.
C14; C9.25; Pentax 100ED; Orion 80ED
Posted 13 June 2007 - 03:24 PM
$199. Please please please please please please please $199.
That will probably make an acceptable down payment.
Actually, the "down payment" (at OPTcorp) is $1
The "deposit" when pricing is announced is 10%
I'm "on the list" sigh
To quote Don (I think?) "yes, my name is Dave and I'm an ocularaholic"
Posted 19 June 2007 - 09:41 AM
There goes my savings account!
...and then some! The 13mm is only the first of a new series of how many? four, five, Ethos eyepieces?
Errr....we don't know!!
We don't know if there will be other focal lengths offered, and if so, what they'll be.
We don't know what the price of the initial Ethos will be.
We don't know the optical design of the Ethos.
I've seen this eyepiece and looked thru it. I don't care what the design is. I want one!!
The Company 7 website sez that there will be a series of Ethos eyepieces and even lists the focal lengths. Also, Televue has a long history of going into production with new products soon after the announcement.
As for all the speculation on price: All I know is what I heard at NEAF when a Televue rep told the Meade rep that the price would be "no where near that amount" (he had suggested that $1,000 would be his limit for a personal purchase.) I think it says something when the main rep of one of your big competitors (Meade) says that he plans on buying your product for personal use.
Posted 19 June 2007 - 01:45 PM
I think it says something when the main rep of one of your big competitors (Meade) says that he plans on buying your product for personal use.
...or to use in designing a Meade knock-off.
Ther IS historical precedent for this...
Posted 19 June 2007 - 01:49 PM
Ther IS historical precedent for this...
I doubt that the Ethos will be as easy to improve upon as the T1 Nagler was.
Posted 12 July 2007 - 12:10 PM
From an optical perspective, when I read "light weight" and "whiter color" and "flatness across the field" and other "without comparison" superlatives, I immediately think plastic internal apsherics with glass outers. This is just the kind of "out of the box" thinking I (we?) should expect from a pioneer, dare I say "guide star" of the industry.
So, the marketing conundrum facing Mr. Nagler is how much to charge for an eyepiece that is likely cheaper to produce and outperforms his existing line? As much as he can, before the genie is out of the bottle and somebody else follows suit. In the meantime, judging by the "bids" as represented by this thread, the price will be $600 (average bid) with a first standard deviation of $160.00. In other words between $440 and $760 by this thread's account, would capture this market and likely not hurt his existing product line.
Posted 15 July 2007 - 08:54 PM
Posted 15 July 2007 - 10:34 PM
Posted 04 September 2007 - 09:56 PM
Posted 04 September 2007 - 09:57 PM
$649 is my guess with first units and then dropping to $499 after 1 year.......
I dunno; so far all TV eyepieces have increased in price over their intro prices.
Posted 05 September 2007 - 12:03 AM
Now, who won the poll?
Posted 05 September 2007 - 11:53 AM
I said "yes" - based on my pre-order date, I should be (hoping!) in the first tranche of shipments at the end of this month... the second tranche is supposedly end of October...
We shall see how long I hold onto my 12T4...
Posted 05 September 2007 - 12:47 PM
Posted 21 December 2007 - 12:13 AM
And now for a completely different topic,,,
Quoting Larry Geary:
"One possibility is that TeleVue might take the Ethos design and adapt it to an 82 degree field, creating a Nagler Type 7. Giving up the extra AFOV might yield more eye relief. That might be of interest to those who say they don't want or need a 100 degree AFOV but like other aspects of the design. TeleVue did something similar when they used technology developed for the Radian to create the Nagler Type 4."
Now that would be cool for us glasses wearers!
Posted 21 April 2008 - 10:03 PM
It's the only EP that has actually made me motion sick (just a tad, folks!) while I was slewing while looking through it. Now THAT'S a wide FOV!!!