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New Masuyama 60mm at Kkohki

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#76 The Ardent

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Posted 20 June 2016 - 08:21 PM

Plan to test in a C11 with 50LE and 21E on an alt-az for LP summer DSO's. Public viewing. Sometimes they have perceptive insights without preconceived ideas (contamination from the Internet)

#77 mgwhittle

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Posted 20 June 2016 - 08:31 PM

Looking forward to hearing the results.  



#78 Tamiji Homma

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Posted 21 June 2016 - 07:07 PM

 

Tammy, anything further to report on this new Masuyama?

 

I had a few short sessions with Masuyama 60 and APM 130 f/9.2.

I felt a little odd that I am getting only 20x from long tube.

 

I had viewing experience similar to RKE 28, floating and looking into patch of night sky, view disappears beyond the field stop.  I think narrow AFOV and long eye relief are causing it. If you like RKE 28 experience, you like Masuyama 60 :)

 

I compared TFOV to XW 40 and Vixen LVW 42.  Masuyama shows a tiny bit wider TFOV than both.

Masuyama does have vignetting near edge but I didn't get bothered by much at night.

 

It makes me want long refractor, 6-7" f/16, maybe :)

 

Tammy


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#79 mgwhittle

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Posted 21 June 2016 - 08:05 PM

 

 

Tammy, anything further to report on this new Masuyama?

 

I had a few short sessions with Masuyama 60 and APM 130 f/9.2.

I felt a little odd that I am getting only 20x from long tube.

 

I had viewing experience similar to RKE 28, floating and looking into patch of night sky, view disappears beyond the field stop.  I think narrow AFOV and long eye relief are causing it. If you like RKE 28 experience, you like Masuyama 60 :)

 

I compared TFOV to XW 40 and Vixen LVW 42.  Masuyama shows a tiny bit wider TFOV than both.

Masuyama does have vignetting near edge but I didn't get bothered by much at night.

 

It makes me want long refractor, 6-7" f/16, maybe :)

 

Tammy

 

 

Thanks Tammy!  I I do like the RKE 28 experience.  I get mine tomorrow and of course the weather goes downhill for the next few days.



#80 ybor

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Posted 21 June 2016 - 08:20 PM

How much  is the eye relief of Masuyama 60 and how does it compare on edge correction to the Pentax 40 xw ?

 

Thanks


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#81 AnakChan

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Posted 21 June 2016 - 08:31 PM

And it seems the Masuyama 2" series has just been put up by Kkohki :-

http://www.sbig-japa...Masuyama60.html

 

Masuyama (45mm) 2" [53°] ¥39,800- (ex-tax)/¥42,984- (inc-tax)

Masuyama (50mm) 2" [53°] ¥49,800- (ex-tax)/¥53,784- (inc-tax)

Masuyama (60mm) 2" [46°] ¥59,800- (ex-tax)/¥64,584- (inc-tax)

IMG_0066-700.jpg


Edited by AnakChan, 21 June 2016 - 08:36 PM.

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#82 ybor

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Posted 21 June 2016 - 08:59 PM

The Masuyama 50 looks very interesting .

 

The 50 mm should cost less than the 60 mm.

 

We could use a nice Masuyama 30 as well .

 

Thanks



#83 mgwhittle

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Posted 21 June 2016 - 08:59 PM

:bigshock: 

 

My bank account is about to decrease in value commensurate to an increase in my eyepiece ownership. 


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#84 mgwhittle

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Posted 21 June 2016 - 09:04 PM

I thought the MOP was going to be dropped from the engraving?  



#85 Chopin

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Posted 21 June 2016 - 09:46 PM

I promised myself I was only going to consider the 1.25" pieces, but dang, that 45mm might be calling to me...


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#86 mgwhittle

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Posted 22 June 2016 - 01:53 PM

from the looks of the coatings, the Tak and the Masuyama lenses could have come out of the same shop.  Which would not be a bad thing!   It'd be worth it to ditch the safety groove.

 

Does the Masuyama have engraved lettering on the top or is it more screened/painted on like the current Tak LE's?    Would be great if the 50mm was lighter than the Tak LE too.

 

It's engraved and the 60mm is surprisingly light.


Edited by mgwhittle, 22 June 2016 - 01:54 PM.

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#87 mgwhittle

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Posted 23 June 2016 - 09:47 AM

The weather has not cooperated for a nighttime viewing session but I'll give my impressions from daylight viewing.  I used a 175mm f/8 APO and tried to view both front and back lighted subjects.

 

  • Didn't notice any vignetting which was surprising based on Tammy's comments, however, the field stop was not sharp.  A bit disappointing as I prefer a crisp field stop.
  • Could not get the RKE floating experience.  Put a 28mm RKE in to compare and still couldn't see the effect compared to the Masuyama.  I was actually hoping to see that.
  • Eye placement is very relaxed.  The Masuyama just got out of the way, it took work to put position your eye so that a slight bit of blackout occurred, no one would actually use it in that eye position.
  • Probably the most neutral color eyepiece I've ever used.  Colors were perfectly represented with no color cast that I could see.
  • Extremely crisp image with a definite snap to focus.
  • Internal light control was excellent, no flares from off side sources and the deeply recessed eye lens meant I could use it in full sun and didn't have to shade my face from extraneous light.

 

The thing that stood out in my mind the most is that the Masuyama really just got out of the way when observing.  It seemed to be a combination of the design (eye placement and light control) and the surprisingly neutral color balance.  I kept thinking how clear the glass seemed with no visible tint on neutral colored subjects.  I was disappointed at the lack of field stop sharpness and maybe the vignetting Tammy noticed is actually what that is and the field stop just blends into the shadow?  If anyone is interested I'll report back when I get a chance to use it at night.

 

Here is a nice look at the eye lens and coatings:

 

 

 

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#88 Scott99

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Posted 23 June 2016 - 10:29 AM

wow, this development is blowing my mind!  LOOK at those smooth barrels!!   :crazyeyes:  :crazyeyes:   

 

No one has put out a big eyepiece with smooth barrels in years!  And a 100% Japan-made eyepiece?   Fortunately I have no desire for the 60mm.  Don't think I will be able to escape the other two!

 

The question is…which one?  My go-to eyepiece in this area is a 45mm Clave Plossl.  I guess the 50mm would be appropriate.   From the 2" offering it really does look like they're going to offer a complete line of focal lengths- why else the 45mm and 50mm?  Will have to save some money for the 1.25 versions.

 

Again, I can't say how thrilled I am at this development.  In a world of heavy 2-inch eyepieces with claptrap grooves & grips & features and contrast-killing 9 element lenses, Chinese knock-offs and outsourcing these are a MOST welcome addition!!!

 

I still can't believe we're even talking about brand NEW Masuyamas from Japan!

 

*Edit….so the 50mm is quite a bit more expensive than the 45mm.  Hmmmm…..what to do?  might have to get the 45mm for a direct comp. w/ the Clave…..


Edited by Scott99, 23 June 2016 - 10:34 AM.

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#89 The Ardent

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Posted 26 June 2016 - 02:36 AM

I tried to compare the M60 with the 50LE and 45 Ultima tonight with my C11 SCT. During twilight I mainly observed Jupiter with the 21 Ethos. Excellent view, Europa on one edge, Callisto emerging fun thr other limb. Then Saturn.

Fog came in thick after sunset and dewed up the corrector plate. Like horror movie fog. I wasn't prepared for dew. After trying the eyepieces on M5, all I can say is I prefer the edge correction of the 41 Panoptic and 21 Ethos. I'll try again another night.

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#90 Blake Andrews

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Posted 26 June 2016 - 04:47 PM

I thought the MOP was going to be dropped from the engraving?  

 

Maybe we can ask them what MOP stands for!

 

:grin:


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#91 Chopin

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Posted 26 June 2016 - 06:12 PM

One thing I'm noticing is that they seem to be coming with rubberized eye guards. The images I see of the originals show a corrugated style volcano top. Is this a change in the current design, or do they come with both tops, allowing for interchangeable setup?



#92 mgwhittle

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Posted 26 June 2016 - 06:26 PM

One thing I'm noticing is that they seem to be coming with rubberized eye guards. The images I see of the originals show a corrugated style volcano top. Is this a change in the current design, or do they come with both tops, allowing for interchangeable setup?

 

Unfortunately, when you unscrew the rubber eye guard you only have set of threads.  It's not as elegant as the original design.

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#93 Chopin

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Posted 26 June 2016 - 11:11 PM

Thanks for the image, Mark. At least removal of the eye guard leaves a clean looking top. Actually, I think I like the look of the top sans eye guard even better. 



#94 jetstream

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Posted 27 June 2016 - 10:05 AM

I wonder what the field stop diameter of the 45mm would be? This could be great in my f7.5 refractor for rich field viewing if large enough.



#95 Levine

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Posted 28 June 2016 - 11:25 AM


I thought the MOP was going to be dropped from the engraving?


Maybe we can ask them what MOP stands for!

:grin:

Modified Ortho Plossl.

#96 tomjones

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Posted 29 June 2016 - 02:53 PM

I WANT 4 5 AND 6MM'S. And a 3mm would be nice.
dO NOT DO 1/2MM'S LIKE BEFORE.

Edited by tomjones, 29 June 2016 - 10:08 PM.


#97 ybor

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Posted 02 July 2016 - 03:50 PM

Like to see  a more complete or second review of the Masuyama 60 mm  eyepiece. 

 

I like to get either the Masuyama 60 or the new Masuyama 50 mm .

 

I hope they make a Masuyama 20 and 30 mm in the future as well .

 

Thank s


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#98 Chopin

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Posted 02 July 2016 - 09:03 PM

Like to see  a more complete or second review of the Masuyama 60 mm  eyepiece. 

 

I like to get either the Masuyama 60 or the new Masuyama 50 mm .

 

I hope they make a Masuyama 20 and 30 mm in the future as well .

 

Thank s

 

Agreed. Definitely hoping all the originals return. I gots me some big plans.



#99 The Ardent

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Posted 02 July 2016 - 09:51 PM

Sure boss, coming right up....

 

Like to see  a more complete or second review of the Masuyama 60 mm  eyepiece. 
 
I like to get either the Masuyama 60 or the new Masuyama 50 mm .
 
I hope they make a Masuyama 20 and 30 mm in the future as well .
 
Thank s

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#100 SFDENNIS

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Posted 03 July 2016 - 12:23 PM

Looks like the 2" Masuyama 45mm ($395) and the 50mm ($495) are now available for pre-order from Agena Astro. Delivery date sometime around the end of the month.  They also show the 60mm ($595) in stock. I couldn't help myself and ordered both the 45mm and the 50mm.  Very lucky that I already have one of the original 60mm Masuyamas or I'd really be broke.    :lol:    Looking forward to what else they decide to release in the future. I have some of the others but would love to see a 20mm and 25mm come out to finish the collection. 




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