Jump to content


Photo

What's the best ortho eyepiece

  • Please log in to reply
67 replies to this topic

#1 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 06 July 2014 - 08:08 PM

Of the currently available ortho eyepieces on the market (which rules out the likes of ZAO's) is there a brand that stands out as the best performer.

I have settled on getting some Tak Abbe Ortho's for use on lunar and planets. I thought I might pose this question here before I plonk down my cash.

#2 gnowellsct

gnowellsct

    Fly Me to the Moon

  • *****
  • Posts: 6574
  • Joined: 24 Jun 2009

Posted 07 July 2014 - 02:31 AM

Assuming you want short focal length, you might try to get your hands on the Pentax XO 2.5 and 5.0. Folks may quibble as to whether the design is properly "ortho" but it's the same idea.

#3 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 07 July 2014 - 04:36 AM

While I like the idea of using a short focal length XO, the eye relief would probably drive me crazy. I have found that I see more lunar and planetary detail using bino viewers, so eyepieces around 12mm to 18mm provide ideal magnification with the Denk power switch, plus they have more useable eye relief.

When I observe with single eyepieces I use Delos. While not quite at XO level for planetary observing I think they would be close enough under most seeing conditions.

#4 tomharri

tomharri

    Messenger

  • *****
  • Posts: 463
  • Joined: 19 Sep 2008
  • Loc: USA

Posted 07 July 2014 - 04:42 AM

Takahashi orthos out perform anything currently available new. Not enough focal lengths however.

#5 Lance1234

Lance1234

    Ranger 4

  • *****
  • Posts: 313
  • Joined: 01 Nov 2012
  • Loc: SoCal

Posted 07 July 2014 - 06:26 AM

You might look into the TMB Supermonocentrics sold by APM telescopes.

#6 snommisbor

snommisbor

    Viking 1

  • *****
  • Posts: 864
  • Joined: 15 Jun 2009
  • Loc: Cedar Park, TX

Posted 07 July 2014 - 10:02 AM

I have been very impressed with the University Optics HD's. Made in Japan optics and priced very reasonably. I think it is the best value to quality ratio out there in a new eyepiece. Right now they just have the 4, 6, and 25. Actually just went to their site and they added the 12 back and looks like a 9 and 18 are about to be released. Been waiting on that 12 to come back so I am about to get that one to complete my set. Search University Optics HD's on here and you will see great reviews.
  • NorthWolf likes this

#7 planet earth

planet earth

    Surveyor 1

  • ****-
  • Posts: 1613
  • Joined: 07 Sep 2010
  • Loc: Ontario Canada

Posted 07 July 2014 - 10:33 AM

I'm surprised you want an Ortho with those three Delos in your list.
Sam

#8 Lance1234

Lance1234

    Ranger 4

  • *****
  • Posts: 313
  • Joined: 01 Nov 2012
  • Loc: SoCal

Posted 07 July 2014 - 12:19 PM

Just following up on my earlier post, APM currently makes 16, 18 & 21mm Supermonos which is right in the range you are interested in. The general consensus seems to be that their performance equals, or is very close to, the ZAOs. Their main limitation is a 30* field of view.

You might also pick up a copy of the book Choosing and Using Astronomical Eyepieces by one of our very own, BillP. It contains a wealth of information on the performance of various eyepieces.

#9 Aquarist

Aquarist

    Apollo

  • -----
  • Posts: 1041
  • Joined: 27 Aug 2012
  • Loc: Illinois

Posted 07 July 2014 - 12:56 PM


You might also pick up a copy of the book Choosing and Using Astronomical Eyepieces by one of our very own, BillP. It contains a wealth of information on the performance of various eyepieces.


A truly excellent book that is easy to read (available from Amazon and others)
  • GeneT likes this

#10 John Anthony

John Anthony

    Messenger

  • *****
  • Posts: 495
  • Joined: 27 Apr 2013

Posted 07 July 2014 - 02:01 PM

I'm surprised you want an Ortho with those three Delos in your list.
Sam


Me too, I haven't reached for an ortho in some time now since I have the Delos and I keep hearing this more and more from others, I can't see any difference between the leading available orthos and the Delos.


http://www.cloudynig.../Number/5632044

#11 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 07 July 2014 - 05:40 PM

I have been very impressed with the University Optics HD's. Made in Japan optics and priced very reasonably. I think it is the best value to quality ratio out there in a new eyepiece. Right now they just have the 4, 6, and 25. Actually just went to their site and they added the 12 back and looks like a 9 and 18 are about to be released. Been waiting on that 12 to come back so I am about to get that one to complete my set. Search University Optics HD's on here and you will see great reviews.


Rob, I have been trying to buy the UO orthos since last year, but I keep buying other gear instead. In the mean time Tak released their eyepieces and I have been leaning toward getting them instead. I am sure there is probably little difference between the two.

#12 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 07 July 2014 - 05:50 PM

I'm surprised you want an Ortho with those three Delos in your list.
Sam


Sam, when it comes to observing with single eyepieces I agree that the Delos is near the top of the tree. But observing lunar and planets through bino viewers has to be seen to be believed. My lifetime best views of Jupiter and Mars have occurred since using my Denks with the humble TV Plossl. On those nights of great seeing I could see more detail with that setup than when using the Delos. So I rarely mono view anything in the solar system anymore.

The reason for the orthos - I don't like using the Plossls on Saturn or the moon for that matter. I prefer eyepieces with a cool colour tone for these which I think will be the case with the Tak orthos.

#13 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 07 July 2014 - 05:55 PM

Just following up on my earlier post, APM currently makes 16, 18 & 21mm Supermonos which is right in the range you are interested in. The general consensus seems to be that their performance equals, or is very close to, the ZAOs. Their main limitation is a 30* field of view.

You might also pick up a copy of the book Choosing and Using Astronomical Eyepieces by one of our very own, BillP. It contains a wealth of information on the performance of various eyepieces.


Thanks Lance. I have looked at the Supermonos over and over again, but I don't know if I am hard core enough to move to a 30 degree field of view. Plus they are expensive when doubling up in a bino. I will stick with the orthos next and maybe revisit the Supermonos one day.

#14 Messyone

Messyone

    Viking 1

  • -----
  • Posts: 531
  • Joined: 02 May 2012
  • Loc: Down Under

Posted 07 July 2014 - 06:11 PM

Hi Allan,
18mm ortho's give my best ever solar system views in my WO bino's. So much so I sold all my XW's recently…..as I don't have Denks and power switching things I use 2 and 3X TV barlows to get the mags I need. I have no idea or really care what the actual magnification is with the bino's in the focuser but once again two eyes are better than one! The ER is perfect too and the FOV 'looks' wider than it probably is, all the benefits of bino's I'm sure you know anyway!
I'm using UO VT orthos.
Matt

#15 gnowellsct

gnowellsct

    Fly Me to the Moon

  • *****
  • Posts: 6574
  • Joined: 24 Jun 2009

Posted 07 July 2014 - 08:59 PM

While I like the idea of using a short focal length XO, the eye relief would probably drive me crazy. I have found that I see more lunar and planetary detail using bino viewers, so eyepieces around 12mm to 18mm provide ideal magnification with the Denk power switch, plus they have more useable eye relief.

When I observe with single eyepieces I use Delos. While not quite at XO level for planetary observing I think they would be close enough under most seeing conditions.


I like eye relief too: it is why the XO 2.5 and 5.0 are my favorite in the tiny glass category. I definitely prefer them to the ZAO 4 and 6mms, and mI prefer all of them to the TMB supermonos which I had one or two of once upon a time.

GN

#16 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 07 July 2014 - 09:23 PM

Thanks Matt, another vote for the ortho/bino combination. I also think an 18mm will give me a nice range of magnification with the power switch, plus good eye relief.

#17 johnnyha

johnnyha

    Fly Me to the Moon

  • *****
  • Posts: 6500
  • Joined: 12 Nov 2006
  • Loc: Sherman Oaks, CA

Posted 08 July 2014 - 02:52 AM

I'd getcha a pair of these.

#18 Allan Wade

Allan Wade

    Messenger

  • -----
  • Posts: 409
  • Joined: 27 Jan 2013
  • Loc: Newcastle, Australia

Posted 08 July 2014 - 04:13 AM

Thanks Johnny. I've seen those around, but do you know how they perform compared to the Taks?

#19 Sarkikos

Sarkikos

    Hubble

  • *****
  • Posts: 16139
  • Joined: 18 Dec 2007
  • Loc: Per sylvam ad astra

Posted 08 July 2014 - 08:35 AM

I like eye relief too: it is why the XO 2.5 and 5.0 are my favorite in the tiny glass category. I definitely prefer them to the ZAO 4 and 6mms, and mI prefer all of them to the TMB supermonos which I had one or two of once upon a time.

GN


+1. I find the eye relief of both XO's perfectly comfortable to my eyes. And the optical performance cannot be beat.

Mike

#20 Scott99

Scott99

    Mercury-Atlas

  • *****
  • Posts: 2819
  • Joined: 10 May 2007
  • Loc: New England

Posted 08 July 2014 - 09:36 AM

but the XO's are not orthos. we're lucky the moderators haven't intervened, this thread is supposed to be about orthos dammit! :roflmao: :roflmao:

#21 camvan

camvan

    Vanguard

  • *****
  • Posts: 2167
  • Joined: 02 May 2005
  • Loc: British Columbia

Posted 08 July 2014 - 09:48 AM

being this thread is about Ortho's and the Edmund's haven't been mentioned, how about them? are they any good? I've seen reference that they're identical to the UO. is this the case?

#22 csrlice12

csrlice12

    Voyager 1

  • *****
  • Posts: 10386
  • Joined: 22 May 2012
  • Loc: Denver, CO

Posted 08 July 2014 - 11:30 AM

Damnit Jim, I'm an Orthodontist, not an engineer..... :lol:

Ok, time for a brief interlude.....and to bring up the neverending question....when's Televue gonna come out with abbe orthos.........

#23 camvan

camvan

    Vanguard

  • *****
  • Posts: 2167
  • Joined: 02 May 2005
  • Loc: British Columbia

Posted 08 July 2014 - 11:49 AM

...when's Televue gonna come out with abbe orthos...

now wouldn't that be nice! :o

#24 Sarkikos

Sarkikos

    Hubble

  • *****
  • Posts: 16139
  • Joined: 18 Dec 2007
  • Loc: Per sylvam ad astra

Posted 08 July 2014 - 11:49 AM

but the XO's are not orthos. we're lucky the moderators haven't intervened, this thread is supposed to be about orthos dammit! :roflmao: :roflmao:


Shhhhh!

Mike

#25 t.r.

t.r.

    Skylab

  • *****
  • Posts: 4373
  • Joined: 14 Feb 2008
  • Loc: 1123,6536,5321

Posted 08 July 2014 - 01:34 PM

Although not orthos, but very similar in design, have you considered recent vintage Brandons? I have two sets that I use for binoviewing and they are perfect for this duty, being extremely light weight. I suspect that they will at least tie the Taks in planetary performance and may surpass them. I have yet to try out a pair of the new Taks to determine the outcome.






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics