#1  
Old 15-10-2018, 03:52 PM
Kunama
...

Kunama is offline
 
Join Date: Sep 2012
Posts: 3,588
Takahashi Bino-TSA102S

The last little piece of the puzzle arrived today so the Bi-TSA102S is now complete.....

Part of getting old is having to down-size stuff so after selling the TSA120 OTAs a couple of months ago, I went in search of some TSA102S samples in pristine condition...... the first find meant a drive to Geelong to buy Les's beautiful 102S...... then, after several weeks of fruitless searching, Steve took pity on me and provided his immaculate scope to complete the set...another quick drive, this time to the Blue Mountains....

The 'L' bracket and side plates were home made while the cradles were custom made in Shanghai and arrived a few weeks ago but still the presence of the black handle bothered me.... eventually my OCD won the argument and I sourced some silver carbon tube from China....

After a couple of hours on the lathe today, the machined & polished end caps and carbon tube handle were ready for installation....

First Light for this setup has been and gone and the results are very promising
Attached Thumbnails
Click for full-size image (MIS_6039.jpg)
107.0 KB60 views
Click for full-size image (MIS_6041.jpg)
97.9 KB47 views
Click for full-size image (MIS_6042.jpg)
135.5 KB59 views
Click for full-size image (MIS_5974.jpg)
105.1 KB51 views

Last edited by Kunama; 15-10-2018 at 07:23 PM.
Reply With Quote
  #2  
Old 15-10-2018, 04:02 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 10,048
My OCD hurts...line up those dewshield decals better

Then it'll be perfect.

You always did like green eyed girls
Reply With Quote
  #3  
Old 15-10-2018, 04:06 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Hinchinbrook
Posts: 20,769
Noice!
Reply With Quote
  #4  
Old 15-10-2018, 04:11 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,905
The dual 120s were amazing but at the same weight as a Mewlon 250, it wasn’t light.
Looking forward to a firstlight report.
Reply With Quote
  #5  
Old 15-10-2018, 04:17 PM
Kunama
...

Kunama is offline
 
Join Date: Sep 2012
Posts: 3,588
Quote:
Originally Posted by LewisM View Post
My OCD hurts...line up those dewshield decals better
Then it'll be perfect. You always did like green eyed girls
Quit-cha-bit-chin-matey
Attached Thumbnails
Click for full-size image (MIS_6044.jpg)
110.6 KB51 views
Reply With Quote
  #6  
Old 15-10-2018, 04:38 PM
AstroApprentice (Jason)
Registered User

AstroApprentice is offline
 
Join Date: Dec 2015
Location: Melbourne, Australia
Posts: 322
common drive shaft?

Wow! that looks amazing - I love the silver carbon handle...
What do you think about using a common drive shaft for the focusers? EMS have done this on some binoscopes.
Attached Thumbnails
Click for full-size image (EMS common drive shaft.jpg)
118.4 KB35 views
Reply With Quote
  #7  
Old 15-10-2018, 05:07 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 10,048
Quote:
Originally Posted by Kunama View Post
Quit-cha-bit-chin-matey
Ahhhhh...now I can relax.
Reply With Quote
  #8  
Old 15-10-2018, 05:10 PM
SkyWatch (Dean)
Registered User

SkyWatch is offline
 
Join Date: Jan 2013
Location: Adelaide
Posts: 391
Quote:
Originally Posted by AstroApprentice View Post
Wow! that looks amazing - I love the silver carbon handle...
What do you think about using a common drive shaft for the focusers? EMS have done this on some binoscopes.
That is just mean Jason! I'm sure Matt's OCD won't even think about doing that... (although personally I would keep them separate to allow for slight diopter differences for left and right eyes.)

Although, speaking of OCD: it's great that you lined up the dewshields Matt; but what about the front of the lens cells? Otherwise I am sure Lewis won't relax after all...

Seriously though: its looks amazing Matt: fantastic effort!!! - and I must say I like the look of the silver carbon fibre tube.

Now if I can only get to look through it one day...

Congratulations again,

Dean
Reply With Quote
  #9  
Old 15-10-2018, 05:13 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 10,048
Quote:
Originally Posted by SkyWatch View Post
Although, speaking of OCD: it's great that you lined up the dewshields Matt; but what about the front of the lens cells? Otherwise I am sure Lewis won't relax after all...
You just had to go and point that out... I...am...starting...to...shake....


Reply With Quote
  #10  
Old 15-10-2018, 05:16 PM
The Mekon's Avatar
The Mekon (John Briggs)
Registered User

The Mekon is offline
 
Join Date: Jul 2007
Location: Bowral NSW
Posts: 770
Brilliant Matt,

This would have to be a "first" for making up not just one TSA binocular, but now a second.
But I am glad I got to view through the TSA120 setup before you split it.

Your work is second to none

John
Reply With Quote
  #11  
Old 15-10-2018, 05:25 PM
Lognic04's Avatar
Lognic04 (Logan)
Registered User

Lognic04 is offline
 
Join Date: Mar 2016
Location: Melbourne, VIC
Posts: 889
WOW!!!
Spectacular!!!
Reply With Quote
  #12  
Old 15-10-2018, 05:27 PM
Kunama
...

Kunama is offline
 
Join Date: Sep 2012
Posts: 3,588
Thanks guys, I have used them for a few hours so far and they are performing very close to their TSA120 brethren. Superb on planetary and lunar views, and surprising on DSOs.

The new setup is 4Kg lighter and $3.5K cheaper so I am in the good books with the CFO again....

Jason, I do have plans for a common drive for the focusers but will build it with a clutch to allow for the .25 diopter difference in my eyes as well as making it useable by guests.

Dean, I have thought of aligning the cell inscription rings as well but am really trying to resist as both OTAs are perfectly collimated ...

John, I am not allowed to buy any more scopes at least for this decade.....
These are working very nicely and especially well with my favourite Pentax XF8.5mm pair.

I actually sold off all my leftover aluminium etc to Peter Bobroff a fortnight ago so that I wouldn't be tempted to build anything new...
Reply With Quote
  #13  
Old 15-10-2018, 05:35 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 10,048
Dibs on the FOA...SERIOUSLY
Reply With Quote
  #14  
Old 15-10-2018, 05:56 PM
Exfso's Avatar
Exfso (Peter)
Registered User

Exfso is offline
 
Join Date: Sep 2006
Location: Adelaide
Posts: 1,686
A thing of beauty
Reply With Quote
  #15  
Old 15-10-2018, 06:00 PM
croweater (Richard)
Don't Panic!

croweater is offline
 
Join Date: Feb 2015
Location: Millicent, South Australia
Posts: 352
Another great job Matt. Very nice. Cheers, Richard
Reply With Quote
  #16  
Old 15-10-2018, 09:39 PM
sharpiel
Registered User

sharpiel is offline
 
Join Date: Jun 2010
Posts: 691
Just beautiful, meticulous work.
Reply With Quote
  #17  
Old 16-10-2018, 07:55 PM
Slawomir's Avatar
Slawomir (Suavi)
Registered User

Slawomir is offline
 
Join Date: Sep 2014
Location: North Queensland
Posts: 3,235
Fantastic work Matt and what a beautiful binoscope
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 08:26 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
NexDome Observatories
Advertisement
Bintel
Advertisement
Limpet Controller
Advertisement
Astronomy and Electronics Centre
Advertisement