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Best inexpensive 9mm eyepiece $100 or less.

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27 replies to this topic

#1 Dan84

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Posted 25 September 2020 - 03:36 PM

I need a 9mm eyepiece for my 900mm ED refractor and 2032mm LX65 Series 8" ACF for planets and moon.  I don't want a WA with a built in Barlow because I have a 2x and don't want to look through "double" Barlow at 4.5mm

 

Not certain which is the best option.  A Kokusai Kohki Ortho has very little glass, looks to be less than the old UO volcano top (would love to have a good one of those).

 

Thank you very much for your time and help in advance.


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#2 jeremiah2229

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Posted 25 September 2020 - 03:41 PM

The Kohki 9mm is an excellent choice for your selected targets. Small field but that keeps you focused on what you are studying.

 

 

Peace...


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#3 Echolight

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Posted 25 September 2020 - 03:42 PM

Probably the Meade 5000 UWA 8.8mm that has been on sale for $99.

 

If it has a built in barlow, I'm not aware of it.


Edited by Echolight, 25 September 2020 - 03:44 PM.


#4 WarmWeatherGuy

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Posted 25 September 2020 - 03:43 PM

I prefer not to get the looking through a soda straw feeling. This has around a 60° AFOV.

Celestron X-Cel LX Series Eyepiece - 1.25-Inch 9mm 93423


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#5 ed_turco

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Posted 25 September 2020 - 03:50 PM

I had the same qualms about eyepieces with barlows, but my experience with the Sybony 9mm wide-angle eyepiece settled my hash on that issue.

 

They go for around $26 or so on EBay.   The 6mm works equally well.  Both would be optimal with your telescopes as they are not short focus.

 

I find it hard to understand that folks these days believe that a higher price = higher quality. 

 

Bull**** !


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#6 photoracer18

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Posted 25 September 2020 - 03:58 PM

Probably the Meade 5000 UWA 8.8mm that has been on sale for $99.

 

If it has a built in barlow, I'm not aware of it.

Modern eyepieces with AFOV of 65 degrees and wider have a tele-negative optical group in the barrel. Its mainly there to widen the field so that is why these eyepieces have much wider tops than old type "soda-straw" fields of view. Its not really used as a Barlow because unlike a Barlow in which you clip the widened field to increase the apparent magnification it uses the widened field to increase the AFOV. I am mosty familiar with the older Pentax XL because they were one of or the first to use this design. All the XL eyepieces from 5.2mm to 21mm use this design, only the 28mm does not because at that FL the 1.25" barrel becomes a restriction or field stop. Obviously a 2" barrel can increase the field also with or without this type of design but to reach certain AFOV sizes even 2" eyepieces are known to use this.


Edited by photoracer18, 25 September 2020 - 04:01 PM.

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#7 kklei940

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Posted 25 September 2020 - 04:14 PM

I prefer not to get the looking through a soda straw feeling. This has around a 60° AFOV.

Celestron X-Cel LX Series Eyepiece - 1.25-Inch 9mm 93423

I too had this eyepiece at one point a couple of years ago. I liked it a lot and only sold it to buy some DeLites. It was nice and compact, gave decent eye relief for my glasses, and has a very smooth twist-up eyecup. The 9mm is considered one of the strongest focal lengths of the whole series. I bought it used for around $50. Great views!



#8 sg6

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Posted 25 September 2020 - 04:16 PM

Seems there is an ES62 degree one at 9mm. Don't hear much about them, but may be worth asking and searching out.

The X-Cel LX is another at 9mm.

Astronomics do Takahashi Starbase 9mm Ortho that looks interesting for $50

 

I have somewhere an Antares 9mm Ortho. Unlikely to come across one but may be worth a google for such.

 

They are about the only 9mm specific ones I know of.



#9 doctordub

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Posted 25 September 2020 - 04:27 PM

A The KK Fujiyama Ortho is under $100.00 new is like the Takahashi abbe ortho that cost $153.00 new.

CS

Jonathan


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#10 Migwan

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Posted 25 September 2020 - 04:40 PM

From our host, an 8mm paradigm dual ed might fill the bill at 60$  Link

 

jd

 

Just noticed "more on the way".


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#11 sixela

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Posted 25 September 2020 - 04:53 PM

https://www.adorama.com/mdhd609.html

If you can still get your hands on one - they're starting to become rare.

 

Feels a bit silly to ship these back from Europe, but there are a couple here, I think (IIRC you get them without VAT if importing them to the US).

https://www.365astro...piece-1.25.html


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#12 sportsmed

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Posted 25 September 2020 - 05:03 PM

I have the Celestron X-Cel LX 9mm and really like it. But yea I have heard good things about the Astro-tech Paradigms for the price. Or maybe a Meade 5000 UWA for wider FOV.



#13 Dan84

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Posted 25 September 2020 - 05:23 PM

I want to thank everyone that has responded, I am fortunate to be among some good and knowledgeable people.


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#14 Chopin

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Posted 25 September 2020 - 07:09 PM

I'll throw another into the mix. I have made this recommendation dozens of times over the years, but the old school Orion Expanse 9mm is honestly mind blowing for a $49 eyepiece. Pretty sure you can find rebadged versions for even less. I own the 9mm and the 6mm and despite owning EPs that cost ten times as much, I keep these for "star party" use. Better than my 9T6 Nagler? No, of course not. But the optical quality differences are actually quite slim despite the price spread. Just a thought.

 

 

Orion Telescopes - 9mm Expanse


Edited by Chopin, 25 September 2020 - 07:13 PM.


#15 tony_spina

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Posted 25 September 2020 - 07:26 PM

Probably the Meade 5000 UWA 8.8mm that has been on sale for $99.

 

If it has a built in barlow, I'm not aware of it.

I agree.  The 5.5mm is also very highly regarded 



#16 cupton

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Posted 25 September 2020 - 07:55 PM

What about the WO Swan 9mm? That’s a 72 degree EP and runs about $80. I’ve got the 20mm and use in both my 127 Mak and my ED80 when I’m not using a zoom and it puts up some pretty nice views.

Edited by cupton, 25 September 2020 - 07:58 PM.


#17 BRCoz

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Posted 25 September 2020 - 08:41 PM

For the planets I use Orthos. I have a set just for planets.  4mm to 18mm,  


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#18 LDW47

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Posted 25 September 2020 - 09:00 PM

Try the Svbony aspheric for less than $50 !

 

From our host, an 8mm paradigm dual ed might fill the bill at 60$  Link

 

jd

 

Just noticed "more on the way".

I thought they asked about a 9mm ! 



#19 LDW47

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Posted 25 September 2020 - 09:04 PM

I had the same qualms about eyepieces with barlows, but my experience with the Sybony 9mm wide-angle eyepiece settled my hash on that issue.

 

They go for around $26 or so on EBay.   The 6mm works equally well.  Both would be optimal with your telescopes as they are not short focus.

 

I find it hard to understand that folks these days believe that a higher price = higher quality. 

 

Bull**** !

I love my Svbony 9mm aspheric, 70° FOV I think ?


Edited by LDW47, 25 September 2020 - 09:05 PM.

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#20 CrazyPanda

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Posted 25 September 2020 - 09:34 PM

9mm eyepieces I've had/have:

  • 9mm Fujiyama HD Ortho - top shelf, tack sharp, high contrast. Sold because I hate the tight eye relief and narrow AFOV.
  • 9mm DeLite - bought after selling the 9mm Fuji, but from recollection, it's just as sharp and contrasty, and way more comfortable, and that extra comfort has given me better views than the 9 Fuji ever did.
  • 9mm "gold line" (aka generic Orion Expanse) - still have, because it was $12 and I would spend more money shipping it to someone if I sold it. Very good. Put it in the focuser and don't tell me it's not my9mm  DeLite and I bet I wouldn't notice a difference (other than the exit pupil behavior)
  • 9mm-21mm Nikon Zoom. Tack sharp, high contrast, very narrow AFOV and tight eye relief.

If you want the best *value* 9mm you can buy, the 9mm "gold line" is it.

 

If you want a "minimum glass" 9mm, you have two choices: 9mm Fujiyama HD Ortho or 9mm Takahashi Abbe Ortho. The 9 Tak Abbe is out of your budget, so that leaves the Fujiyama.

 

Given the magnification you're going for in your 8" SCT, you will not see a difference between the Fuji and the "gold line". The errors in the focal plane formed by the objective (diffraction effects, dim view, imperfections in the objective, and atmosphere) will overwhelm the subtle differences between the Fuji and the Gold Line.

 

Maybe a different story for your ED refractor. Guess it depends on which ED refractor.


Edited by CrazyPanda, 25 September 2020 - 09:36 PM.

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#21 BKSo

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Posted 25 September 2020 - 10:09 PM

My planetary weapon for that focal range: Olympus gswh30x/7 microscope eyepiece, which is 8.3mm. Much sharper than 15mm goldline + barlow.

#22 The Luckster

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Posted 25 September 2020 - 11:05 PM

Well, I preferred using the Celestron X-Cell 9mm over the "Goldline" 9mm, however, both of these oculars do not meet your criteria.  You could go with a 9mm Plossl, but if it were I, I would select the Fujiyama 9mm.

 

Good luck

 

jason


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#23 NorthernlatAK

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Posted 26 September 2020 - 12:24 AM

For maybe $120 give or take, keep an eye out for a 9mm t1 Nagler in the classifieds if your wanting a quality glass wider fov. It's also an important piece of amatuer astronomy history as far as afov. I found one here a couple years ago and picked one up. One of my most used, even though I've only got four eyepieces and a barlow.

#24 Dan84

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Posted 26 September 2020 - 12:25 AM

Thank you all for your input. 

 

I decided to purchase the Fujiyama 9mm.  I know it has a narrow field of view, however, being a little "old school" viewing since the 1970s I am used to it and decided on the Ortho for planets, can't be any worse than my UO volcano top 6mm.


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#25 BDS316

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Posted 29 September 2020 - 07:46 AM

No longer available except used but the best 9mm eyepiece I've ever used was a 16mm Konig 2 from defunct University Optics used with a Televue 1.8x Barlow.  9mm equivalent. Great in slow and fast scopes.  

 

Used by iteslf the Konig was good in slow scopes only.  Awful in fast scopes.


Edited by BDS316, 29 September 2020 - 07:46 AM.

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