Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

ES 92° 17mm Review

  • Please log in to reply
78 replies to this topic

#1 tayseidel

tayseidel

    Vostok 1

  • *****
  • topic starter
  • Posts: 100
  • Joined: 15 Nov 2012

Posted 31 August 2018 - 01:06 AM

I purchased the ES92 17 from Eyepiecesetc.com and received it this past Monday. The packaging was excellent, and it was packed well. Thanks Don! I had a chance to look through it immediately on Monday night and Tuesday night, despite cloudy/rainy forecasts. It was clear both nights with nary a cloud in sight. Absolutely beautiful views! The ES92 17 has changed my observing sessions for the better. Now I can take my contacts off when I get home from work, rather than leaving them on until after my observing session which I came to dread.

 

Love, love, love, love this eyepiece. It is one of those EP’s that has that WOW! factor. 

 

Used it in my f/5.5 10” dob in my backyard. No paracorr.

 

Mag: 84x | Exit pupil: 3.09mm

 

First thoughts [eyepiece]

 

The eyepiece is big and heavy. For my 10” f/5.5, the weight of the EP is of no concern. I had no issues with balance whatsoever with just the ES92 17mm. No counterweights with the eyepiece solo in the Moonlite focuser. My f/5.5 10” is able to handle the ES17 92° + TV PM x2 easily, with a counterweight on the back of the mirror cell via a bolt. No slippage at all.

 

First thoughts [First light]

 

This is the first eyepiece I’ve had that allows me to wear eyeglasses. I can see the entire FOV with my eyeglasses on with about 2-3mm between the lens of my glasses and the rubber eyecup of the eyepiece (in the down position).

 

Very comfortable eyepiece to use. No question about it. The AFOV at 92° does not feel cramped at all. I could not discern much of a difference between the 92° AFOV and the 100° AFOV of the Ethos and ES100 EPs. The difference is much like going from a 6E 100° to a 4.7E with the 110° AFOV. Just not that noticeable. The ES92 17 felt like it had a AFOV of 100°. Very immersive.

 

The views and the presentation of Saturn, M57, M13, Mars, and Luna were simply amazing. Observing with eyeglasses completely changes the experience for me, and for the better. No more shifting of my contacts. No more of the stars going stig every which way when my contacts shift. I can see the entire FOV with my glasses on with 1-2mm to spare. Just absolutely a tremendous eyepiece. I looked at Saturn, M13, M51, M92, The Double Double, and Mars. I could see the Cassini division on Saturn.

 

The transmission and edge sharpness in the ES92 17 are top rank.

 

Color:

 

The ES92 17 has a neutral/warm color overtone on the Moon. The moon doesn’t appear blue/white like it does in my other EPs. Rather it looks more neutral, almost warm. It’s white, but does not tend towards blue. The moon gets very slightly oval towards the very edge of the FOV. It does not impact the views.

 

Stars were in focus all the way out to the edge. Stars did not lose focus as they got closer to the edge. No astigmatism appeared to be present out on the edge.

 

I had no trouble holding the view. No blackouts. No kidney beaning. Very easy EP to use.

 

The EP itself does not have issues catching reflections like with the ES120 9mm. however my eyeglasses does. No fault of the EP.

Contrast seems to be good, even though it was nearly a full moonlit sky. I have a feeling that contrast will end up being a strength of this EP as I’ve looked through other EPs that didn’t have good contrast.

 

The presentation in the ES92 17 is unbelievable. I know now, that I'm buying the ES92 12 as my next EP. The eye relief on the ES92 17 is tremendous, and the eyepiece is so much easier for my wife and three kids to use (none of whom wear glasses like I do). My son Gustav, (he is 10) commented that everything looked so much clearer in the ES92 17, likely because of the eye relief making it a more comfortable eyepiece to use.

 

My wife Andrea loved it for the ease of use. She said it's the best eyepiece she’s ever looked through. I have to agree with her. This is the best EP I’ve looked through. I love it. It’s earned a permanent place in my case, soon to be joined by its 12mm sibling.


Edited by tayseidel, 31 August 2018 - 01:14 AM.

  • wky46, SteveG, Illinois and 13 others like this

#2 25585

25585

    Fly Me to the Moon

  • *****
  • Posts: 5428
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the UK.

Posted 31 August 2018 - 06:16 AM

Great review like-button.jpg

 

Eye relief and eye comfort forgiving positioning,  having to wear glasses are always my #1 consideration. The ES from your assessment seems like a Morpheus 17.5 with an extra 16 degrees AFOV.

 

If it's good without a Paracorr, so much the better. Possibly using one, the slight edge curvature you saw on the Moon might be flattened? 



#3 Tank

Tank

    Soyuz

  • *****
  • Posts: 3938
  • Joined: 27 Jul 2009
  • Loc: Stoney Creek, Ontario, CANADA

Posted 31 August 2018 - 09:17 AM

Yup

the 17 ES 92 and 12 ES 92 are awesome

they are my main EPs I use to view with

I hope they come out with a few more FLs

hope more people jump on the ES 92 train :)

the WOW factor is definitely there

clear skies


  • Procyon and 25585 like this

#4 25585

25585

    Fly Me to the Moon

  • *****
  • Posts: 5428
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the UK.

Posted 31 August 2018 - 11:26 AM

Price in the UK is £390. Definitely TV territory now. Their between Nagler & Ethos FOV is tempting but considering my Orion LHD Lanthanum LER 14 and 20mm 2 inch eps with 80 deg AFOV and 20mm eye relief cost £215 each, the 12 and 17 ES eps each cost a bit more than half of the 92s.  

 


Edited by 25585, 31 August 2018 - 11:33 AM.


#5 rowdy388

rowdy388

    Gemini

  • *****
  • Posts: 3489
  • Joined: 09 Apr 2013
  • Loc: Saratoga County, NY

Posted 31 August 2018 - 11:29 AM

I really enjoy my ES92 17mm as well. Although I own a 13mm Ethos, I've thought about

getting the ES 12mm. I probably won't but the temptation is there. I have never considered

replacing the ES92 17mm with the 17 Ethos though. That just isn't going to happen.


  • 25585 likes this

#6 Ac2aj

Ac2aj

    Messenger

  • -----
  • Posts: 433
  • Joined: 16 Aug 2015

Posted 31 August 2018 - 01:03 PM

I have many eyepieces. Probably enough to be considered an ep collection problem. My favorite and mostly used ep is the 12 mm ep in this series. It’s just an awesome ep. I have thought about the 17 but I probably won’t get it unless there is another sale. They are big heavy eps but the views make up for it. It’s really nice in the 152 apo.

Brian
  • 25585 likes this

#7 NOLAMusEd

NOLAMusEd

    Ranger 4

  • *****
  • Posts: 328
  • Joined: 04 May 2016
  • Loc: Louisiana

Posted 31 August 2018 - 01:39 PM

I have long wanted to view through one of the 92's, just to see what the fuss is about. I'm sure they're fantastic oculars, but the extreme weight just makes it impractical for me. I upgraded my dob's focuser primarily to be able to comfortably handle the weight of a Paracorr and Ethos/Short FL Delos in tandem, and I fear that an ES92 + Paracorr would have me in the same place I was with the stock focuser using 1 pound eyepieces. I also wouldn't be able to use one with the apo, as I had focuser issues with heavy eyepiece/barlow combos any time the scope was pointed above 45 degrees.

 

Either way, I'm happy for those who have found workarounds to mitigate the weight issue.



#8 Starman1

Starman1

    Vendor (EyepiecesEtc.com)

  • *****
  • Vendors
  • Posts: 42723
  • Joined: 23 Jun 2003
  • Loc: Los Angeles

Posted 31 August 2018 - 04:24 PM

They're heavy, and expensive, but the best eyepieces ES has produced to date, IMO.

My friend Mirko has the 17mm for his 16" f/4.5, and it is a fine eyepiece in that scope.

In my 12.5" with Paracorr, the image quality is exemplary.

It does prove that when China really makes something extraordinary, it won't be cheap.


  • payner, Bruno Yporti and 25585 like this

#9 Astrojensen

Astrojensen

    Voyager 1

  • *****
  • Posts: 12196
  • Joined: 05 Oct 2008
  • Loc: Bornholm, Denmark

Posted 31 August 2018 - 04:37 PM

They're heavy, and expensive, but the best eyepieces ES has produced to date, IMO.

My friend Mirko has the 17mm for his 16" f/4.5, and it is a fine eyepiece in that scope.

In my 12.5" with Paracorr, the image quality is exemplary.

It does prove that when China really makes something extraordinary, it won't be cheap.

On the other hand, what would they have cost, if they came from Televue? $600? $700? For what they are, I think the price isn't bad at all. 

 

 

Clear skies!
Thomas, Denmark


  • Starman1, wky46, payner and 3 others like this

#10 Miranda2525

Miranda2525

    Surveyor 1

  • *****
  • Posts: 1848
  • Joined: 12 Jul 2016

Posted 31 August 2018 - 06:56 PM

I've tried both. They are really good!!!


  • 25585 likes this

#11 Tyson M

Tyson M

    Soyuz

  • *****
  • Posts: 3650
  • Joined: 22 Jan 2015
  • Loc: 53 degrees North

Posted 31 August 2018 - 10:06 PM

I have always been very curious about these two. Some day I will try them. 

 

Looking forward to more reports. 



#12 Darren Drake

Darren Drake

    Soyuz

  • *****
  • Posts: 3874
  • Joined: 09 Oct 2002
  • Loc: Chicagoland

Posted 02 September 2018 - 10:36 AM

I sacrificed my 13E and 21E for the 12 and 17 and have never looked back.  Never thought that could happen but ES came up with these 2 amazing eyepieces which are game changers for eyeglasses wearers.  They will never leave my 40 lb eyepiece case.   Except to use of course... 


Edited by Darren Drake, 02 September 2018 - 10:38 AM.

  • SteveG, Astrojensen, Tank and 2 others like this

#13 junomike

junomike

    Hubble

  • *****
  • Moderators
  • Posts: 16923
  • Joined: 07 Sep 2009
  • Loc: Ontario

Posted 02 September 2018 - 06:10 PM

Only downfall IMO is the lack of  F/L's. Come on ES and get some more out there!



#14 CHASLX200

CHASLX200

    Hubble

  • *****
  • Posts: 18414
  • Joined: 29 Sep 2007
  • Loc: Tampa area Florida

Posted 02 September 2018 - 06:16 PM

I sacrificed my 13E and 21E for the 12 and 17 and have never looked back.  Never thought that could happen but ES came up with these 2 amazing eyepieces which are game changers for eyeglasses wearers.  They will never leave my 40 lb eyepiece case.   Except to use of course... 

I may have to try one if they are cheaper than the Ethos.



#15 bmurphy495

bmurphy495

    Ranger 4

  • *****
  • Posts: 394
  • Joined: 06 Jul 2013

Posted 02 September 2018 - 07:38 PM

Only downfall IMO is the lack of  F/L's. Come on ES and get some more out there!

They are working on them. Sent them an IM on Facebook and they said there are more on the way. I have both of them and they are fantastic in every scope I have tried them in.

 

B



#16 Pauls72

Pauls72

    Vanguard

  • *****
  • Posts: 2496
  • Joined: 28 Oct 2007
  • Loc: LaPorte, IN USA

Posted 02 September 2018 - 11:32 PM

They are working on them. Sent them an IM on Facebook and they said there are more on the way. I have both of them and they are fantastic in every scope I have tried them in.

 

B

That's what Scott told us at the Nebraska Star Party. He also said it takes them around a year to bring a new eyepiece to market.


  • bmurphy495 likes this

#17 tayseidel

tayseidel

    Vostok 1

  • *****
  • topic starter
  • Posts: 100
  • Joined: 15 Nov 2012

Posted 03 September 2018 - 12:19 AM

The ES92 17 continues to be a fantastic performer. I love it. I'm glad for the spacing between the 12 and the 17 as that gives me focal lengths of 6, 8.5, 12, and 17 by using the TV PM x2. I hope the next focal length they come out with is a 22mm but I have doubts about that. I'm guessing a shorter focal length, like an 8mm or so. I'll be very surprised if ES ever releases a 22mm focal length for the 92 series. I'm hoping they keep the eye relief and comfort factor consistent as they release new focal lengths.

 

It turns out I can use the 4.7E and the 6E without needing correction (no contacts) as the exit pupil in both of these EPs in my scope is small enough not to show the astigmatism in my eye. I borrowed those EPs from a friend to figure out the plan going forward for my EP collection for the shorter focal lengths. Now, I need to decide if I should wait for ES to release a short focal length ES 92, like the 8mm, or go ahead and get a 4.7E/6E as those are fantastic high power EPs in my scope. First, I'm installing a Nexus DSC in my scope before getting more EPs.


Edited by tayseidel, 03 September 2018 - 12:24 AM.


#18 Procyon

Procyon

    Fly Me to the Moon

  • *****
  • Posts: 6480
  • Joined: 23 Feb 2009
  • Loc: Eastern Canada

Posted 03 September 2018 - 08:36 AM

If i didn't have a 17 Nikon I'd pounce on that 17. Already have the 12, great eyepiece.
  • bmurphy495 and 25585 like this

#19 bmurphy495

bmurphy495

    Ranger 4

  • *****
  • Posts: 394
  • Joined: 06 Jul 2013

Posted 03 September 2018 - 08:53 AM

If i didn't have a 17 Nikon I'd pounce on that 17. Already have the 12, great eyepiece.

One of the club members has the 17 Nikon and we compared it to the 17mm ES a couple of months ago. I remember thinking that I'm glad I didn't pay for it, but it weighs much less than the Explore Scientific if I remember correctly. I think the views were comparable. 

 

B



#20 vkhastro1

vkhastro1

    Apollo

  • *****
  • Posts: 1201
  • Joined: 21 Aug 2005
  • Loc: Vankleek Hill, Ontario, Canada

Posted 03 September 2018 - 08:56 AM

Own both ES 12mm and 17mm 92° eyepieces - awesome.

Looking forward to any new addition(s) to the lineup - definitely on my definite buy list.


  • Tank and 25585 like this

#21 vkhastro1

vkhastro1

    Apollo

  • *****
  • Posts: 1201
  • Joined: 21 Aug 2005
  • Loc: Vankleek Hill, Ontario, Canada

Posted 03 September 2018 - 09:07 AM

One of the club members has the 17 Nikon and we compared it to the 17mm ES a couple of months ago. I remember thinking that I'm glad I didn't pay for it, but it weighs much less than the Explore Scientific if I remember correctly. I think the views were comparable. 

 

B

I have not looked through the Nikon NAV 17/14mm eyepiece.

Even if the views were compatible to the ES 17mm 92° eyepiece, for the same $$$ I would rather have BOTH the ES 12mm and 17mm 92° eyepieces.


  • bmurphy495 likes this

#22 russell23

russell23

    Cosmos

  • *****
  • Posts: 9891
  • Joined: 31 May 2009
  • Loc: Upstate NY

Posted 03 September 2018 - 09:13 AM

I recently picked up a 12mm ES92 to try out.   I've only been able to use it a couple of times because the weather her has been horrible for observing all summer - the worst I can remember in many years.   

 

But the couple times I've used the ES92 I have been extremely impressed with the performance.  It is sharp just about to the field stop and gives a nice clean view.

 

I'm not yet sold upon it simply for the personal reason that I don't seem to like 100deg AFOV.   It is just too much for me and I get the same sense of too much field with the ES92.   I did not get that feeling with the 12.5mm Docter so I think my upper limit for AFOV tolerance is about 84 deg.

 

But the 12mm ES92 is excellent. 



#23 tayseidel

tayseidel

    Vostok 1

  • *****
  • topic starter
  • Posts: 100
  • Joined: 15 Nov 2012

Posted 03 September 2018 - 10:28 AM

I recently picked up a 12mm ES92 to try out.   I've only been able to use it a couple of times because the weather her has been horrible for observing all summer - the worst I can remember in many years.   

 

But the couple times I've used the ES92 I have been extremely impressed with the performance.  It is sharp just about to the field stop and gives a nice clean view.

 

I'm not yet sold upon it simply for the personal reason that I don't seem to like 100deg AFOV.   It is just too much for me and I get the same sense of too much field with the ES92.   I did not get that feeling with the 12.5mm Docter so I think my upper limit for AFOV tolerance is about 84 deg.

 

But the 12mm ES92 is excellent. 

I've always thought that the argument that 100° was too much field was an interesting one. With my 92/100°s, I just use the field near the edges as context. I don't try to take in the entire field all at once, like you would with the narrower FOV eyepieces. I use the 92/100° EPs much in the same way I use my eyes when walking down the sidewalk on my block. Cars driving by, people walking by on the sidewalk on the other side of the street, the cats, dogs running around are in my peripheral vision. I'm aware that all of those things are happening, but I don't try to take those in and bring them into focus. I know they're there, much like the stars near the edge in my 92/100°s. I don't bring them into focus like I don't bring the couple walking with their dog on the opposite sidewalk of where I am into focus.

 

For me, the 82° FOV eyepieces and under, feel cramped. The 92/100s are where it is at for me. The only negative for the 100°s for me, is the short eye relief making the use of eyeglasses impossible. The dioptrx eats up the eye relief on the 100° EP and would make it necessary for me to jam my eye up against the dioptrx.

 

The 92° series solved this problem. The 17 is a joy to use, and I can maintain consistent correction on my vision with my eyeglasses, which is something I could not do with my contacts in the dark because of the slight tilt of my head. 


Edited by tayseidel, 03 September 2018 - 12:45 PM.

  • Starman1, Live_Steam_Mad and JNDiller like this

#24 Procyon

Procyon

    Fly Me to the Moon

  • *****
  • Posts: 6480
  • Joined: 23 Feb 2009
  • Loc: Eastern Canada

Posted 03 September 2018 - 02:25 PM

I have not looked through the Nikon NAV 17/14mm eyepiece.
Even if the views were compatible to the ES 17mm 92° eyepiece, for the same $$$ I would rather have BOTH the ES 12mm and 17mm 92° eyepieces.

If the 17mm 102° Nikon wasn't able to transform into a 14mm 102° I'd have bought the 17 ES 92 instead. The Nikon can be had for 750-800 new, so it came out to around 350-400 per focal length. Wider and probably sharper too than the ES 92 or Ethos. I'd prefer the eyeguard of the ES 92 over any eyepiece though, except for the ES 25 100, as they are nearly the same minus a few mm.

Wow, imagine that...a 24-26mm ES 92, that'd be great...not due to comfort, but for it's sharpness and transmission. I saw 4 or 5 Saturn moons with a 12mm ES 92°, awesome view, enough to consider it a keeper, it even squeezes in Ganymede when viewing Jupiter at 245x.

Edited by Procyon, 03 September 2018 - 03:03 PM.

  • vkhastro1 and StarDust1 like this

#25 Starman1

Starman1

    Vendor (EyepiecesEtc.com)

  • *****
  • Vendors
  • Posts: 42723
  • Joined: 23 Jun 2003
  • Loc: Los Angeles

Posted 03 September 2018 - 03:02 PM

A couple years ago, ES told me the focal lengths they were working on were a 22mm, 8.8mm and 6.5mm.

Whether or not those end up being the actual focal lengths produced, I have no idea.

I was told not long ago that the first new focal length would be in 2019 some time.


  • Procyon, Dennis Davis and 25585 like this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics