ICEINSPACE
Most Read Articles
Moon Phase
CURRENT MOON Waxing Gibbous
84.6%
The Sun Now
Time Zones
Sydney*
7:34 pm
Perth
4:34 pm
Auckland*
9:34 pm
New York
3:34 am
Paris
9:34 am
GMT
8:34 am




Go Back   IceInSpace > Equipment > Eyepieces, Barlows and Filters

Reply
 
Thread Tools Rate Thread
  #1  
Old 07-12-2018, 04:22 PM
Wilso (Darren)
Registered User

Wilso is offline
 
Join Date: Nov 2016
Location: Gawler
Posts: 227
MASUYAMA eyepiece

Hi all,

For those who are interested, looks like a new masuyama eyepiece is about to be released in the 1.25" format.
A small form 10mm eyepiece in the 85deg series.
Eye relief is a bit tight though at 6.5mm (similar to a 9mm nagler) but has a smooth barrel and weighing only 100gms.
To be released mid December.

Thanks for looking
Attached Thumbnails
Click for full-size image (image.jpg)
32.4 KB39 views
Reply With Quote
  #2  
Old 07-12-2018, 04:26 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,723
That'll go nicely with my Masu 20...
Reply With Quote
  #3  
Old 07-12-2018, 04:34 PM
Wilso (Darren)
Registered User

Wilso is offline
 
Join Date: Nov 2016
Location: Gawler
Posts: 227
I have the 16mm 85deg eyepiece one of my favourites.
Very sharp and contrasty suited to a longer focal ratio scope though.
Fit and finish on these are terrific.
Reply With Quote
  #4  
Old 07-12-2018, 04:45 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,723
I find the Masu 20 superb in the f/5 FSQ-106.
Reply With Quote
  #5  
Old 07-12-2018, 06:23 PM
FlashDrive's Avatar
FlashDrive (Col)
Senior Citizen

FlashDrive is offline
 
Join Date: Apr 2008
Location: Brisbane North
Posts: 3,800
They are very nice eyepieces .... well worth having IMHO.

Col....
Reply With Quote
  #6  
Old 08-12-2018, 12:41 PM
Hans Tucker (Hans)
Registered User

Hans Tucker is offline
 
Join Date: Jul 2008
Location: Melbourne
Posts: 1,389
pffft..that's not an eyepiece...this is an eyepiece.

https://agenaastro.com/masuyama-3-in...iece-80mm.html
Reply With Quote
  #7  
Old 08-12-2018, 05:20 PM
FlashDrive's Avatar
FlashDrive (Col)
Senior Citizen

FlashDrive is offline
 
Join Date: Apr 2008
Location: Brisbane North
Posts: 3,800
Quote:
Originally Posted by Hans Tucker View Post
pffft..that's not an eyepiece...this is an eyepiece.

https://agenaastro.com/masuyama-3-in...iece-80mm.html

You then have to buy a 3" inch Diagonal .....things are getting quite expensive by then.


Nice Eyepiece tho'
Reply With Quote
  #8  
Old 10-12-2018, 12:26 PM
SkyWatch (Dean)
Registered User

SkyWatch is offline
 
Join Date: Jan 2013
Location: Adelaide
Posts: 360
Quote:
Originally Posted by Hans Tucker View Post
pffft..that's not an eyepiece...this is an eyepiece.

https://agenaastro.com/masuyama-3-in...iece-80mm.html
That's not an eyepiece: it's a rocket booster!
Reply With Quote
  #9  
Old 12-12-2018, 03:03 PM
ausastronomer (John Bambury)
Registered User

ausastronomer is offline
 
Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,437
Quote:
Originally Posted by LewisM View Post
I find the Masu 20 superb in the f/5 FSQ-106.
Lewis,

That is a 52 Deg AFOV eyepiece is it not ?

Cheers
John B
Reply With Quote
  #10  
Old 12-12-2018, 06:32 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,723
Yes John, 52 AFOV. Simply superb EP in refractors (didn't like it in the Mak that much).

I checked Astromart for some recently, and couldn't believe the current second hand price for them...$300 to $400 US - and they sell.
Reply With Quote
  #11  
Old 12-12-2018, 07:36 PM
Wilso (Darren)
Registered User

Wilso is offline
 
Join Date: Nov 2016
Location: Gawler
Posts: 227
Getting to the hard to get item status!!$
I was reading a thread on CN and a guy had 2 full sets of them.

It would be interesting to observe using the older Masuyama 52deg series to the newer Tak le's of today and how they compare considering the similar 5 element 3 group lenses with newer coatings.
Reply With Quote
  #12  
Old 12-12-2018, 08:17 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,723
I've seen ghosting in LEs. Never in Masuyamas
Reply With Quote
  #13  
Old 13-12-2018, 08:25 AM
ausastronomer (John Bambury)
Registered User

ausastronomer is offline
 
Join Date: Mar 2005
Location: Shoalhaven Heads, NSW
Posts: 2,437
Quote:
Originally Posted by LewisM View Post
Yes John, 52 AFOV. Simply superb EP in refractors (didn't like it in the Mak that much).

I checked Astromart for some recently, and couldn't believe the current second hand price for them...$300 to $400 US - and they sell.
Hi Lewis,

I suspected as much. I have used the 52 deg AFOV ones down to F5 in Newtonians and they work very well. Due to the optical design limitations with 5 lens elements, it's not possible to get the 85 deg AFOV versions to perform well in fast telescopes. They will be excellent performers in slower scopes. They may or may not work well in SCT's which notwithstanding their F10 overall F-Ratio, generally have primary F-Ratios of F2 to F2.5, as some aberrations like field curvature are related to the F-ratio of the primary optic and not the F-ratio of the telescope.

Cheers
John B
Reply With Quote
  #14  
Old 13-12-2018, 08:38 AM
Merlin66's Avatar
Merlin66 (Ken)
Spectroscopy Wizard

Merlin66 is offline
 
Join Date: Oct 2005
Location: St Leonards, Vic
Posts: 6,619
It's the name that sells....
I should held onto the full set I had...would have improved my finances in retirement!!!
Reply With Quote
  #15  
Old 13-12-2018, 08:59 AM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,723
Indeed it is the name Ken but they sure do perform too- so regularly copied there is a whole market of pseudo-Masuyamas. My Pseudo-Masu Parks Gold Series 25mm is my EP of choice on most nights.

I tried the Masu 20 in a Mewlon 300 once. Woeful! They assuredly like refractors (and Newts as John has said)
Reply With Quote
  #16  
Old 21-12-2018, 05:07 PM
Wavytone (Nick)
BigBanger

Wavytone is offline
 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 3,471
Japanese eyepieces are design for refractors... not newtonians.
The field curvature is the key.
Reply With Quote
  #17  
Old 21-01-2019, 05:07 PM
Wilso (Darren)
Registered User

Wilso is offline
 
Join Date: Nov 2016
Location: Gawler
Posts: 227
Picked up the lovely little Masu 10mm today!
Gave it a quick go with my Borg scope, as to be expected they all preform great for terrestrial use also.
Thanks to Lewis 👍 have my own little collection now.
Interesting to see how this one performs off axis under the stars though.
Attached Thumbnails
Click for full-size image (image.jpg)
199.6 KB28 views
Reply With Quote
  #18  
Old 21-01-2019, 05:58 PM
bratislav (Bratislav)
Registered User

bratislav is offline
 
Join Date: Aug 2006
Location: Melbourne
Posts: 221
I've sold my Masuyama set (5, 7.5, 10 and 15) to an eyepiece collector in US and never really looked back. Yes, they are decent, but not really magic (contrary to what many people try to make them into).

The only regret I have is not keeping them a bit longer, I could have made even more money
Reply With Quote
  #19  
Old 21-01-2019, 06:04 PM
Merlin66's Avatar
Merlin66 (Ken)
Spectroscopy Wizard

Merlin66 is offline
 
Join Date: Oct 2005
Location: St Leonards, Vic
Posts: 6,619
Yeah,
I feel the same about the full set of Masuyama eyepieces I had!!!!
Reply With Quote
  #20  
Old 22-01-2019, 07:54 AM
anj026's Avatar
anj026
Plyscope

anj026 is online now
 
Join Date: Oct 2006
Location: Perth
Posts: 449
How comfortable is the new 10mm (and 16mm) in use Darren? I love the 32mm, its my DSO eyepiece in the f15 refractors.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:34 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
NexDome Observatories
Advertisement
Interest Free Finance
Advertisement
SkyWatcher WiFi Adaptor
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
FLI Cameras and Imaging Accessories
Advertisement
Bintel
Advertisement
SkyWatcher 2018 Catalogue
Advertisement
Astronomy and Electronics Centre
Advertisement