Explore Scientific 9mm 120°

[AndyH]

Explore Scientific 9mm 120° field waterproof 2" eyepiece EPWP12009-01

Read about this over on Cloudy Nights.

120 degrees. It's starting to get quite mad.

You'll need deep pockets for this one

Andy.

[michael.h.f.wilkinson]

One thousand dollars for an EP? Thanks but no thanks. When will they roll out a 180 deg EP?

[Ben Ritchie]

Wow, this is starting to get silly. Wonder if TeleVue will turn it up to 125

edit: Google tells me the Köhler design offers 120 degrees and has been used for military applications since the 1960s. Expensive, but military generally not concerned about such things. Seem to be lots of elements so I'd speculate that coatings are important here for transmission/scatter?

[John]

Crazy spec and a crazy price. I guess that will be £1K by the time it makes it across to us

Does this start to push at the traditional definitions of regular, wide and ultra-wide fields of view ?. Is a Hyperion or Panoptic just a regular FoV eyepiece, with Nagler / UWAN's wide angle and ultra-wides starting at 100 degrees now then

[michael.h.f.wilkinson]

Create a hype, go for HYPER-wide-angle EPs, and the later ultra-hyper-angle EPs. Where does it end?

[swamp thing]

You would have thought that a bit of competition would bring the prices of these hyper wides down a bit.

[Andrew*]

The whole moon at 200x.........

I'm surprised TeleVue didn't get there first...

[John]

The whole moon at 200x.........

I'm surprised TeleVue didn't get there first...

I believe Al Nagler has a saying "show no field unless it's sharp". Maybe TV doubt whether the design would really be up to their requirements at F/4 ?

[spaceboy]

120' and only 13mm eye relief. People complain about the 16T5 and that's a quarter of the price

[Schorhr]

Perhaps the next step will be 360° helmet eyepieces :-)

[Andrew*]

I believe Al Nagler has a saying "show no field unless it's sharp". Maybe TV doubt whether the design would really be up to their requirements at F/4 ?

Excellent point, John. I was a little skeptical when I read that on the website...

120' and only 13mm eye relief. People complain about the 16T5 and that's a quarter of the price

Eye relief figures take into account the FOV, so it won't be any tighter than an ortho with 13mm eye relief. Of course, from a design point of view, offering long eye relief becomes more tricky the larger the FOV.

Andrew

[E621Keith]

Some people on CN have received their 8mm ES120deg. Look at the size of that thing, it's humongous. The Ethos 10 isn't exactly a small eyepiece, but it looked tiny next to the ES.

http://www.cloudynig...ll/fpart/2/vc/1

[alan potts]

I bet it still will not out perform a Televue on edge sharpness no matter what it costs.

Alan.

[faulksy]

the pentax looks like a ortho compared to the e.s.

[E621Keith]

the pentax looks like a ortho compared to the e.s.

People say Pentax XW is like an ortho. Putting one next to the ES120, that statement is now for both size and AFOV.

XW's AFOV is 58% of the ES120, in the same way a 40deg ortho's AFOV is 57% that of the XW.

[Dunkster]

Ignoring the price, that thing is almost 3 lbs in weight