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1988 Tak FC-100 - Explore & Restore

Classic Collimation Equipment Optics Refractor
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#51 Defenderslideguitar

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Posted 30 May 2021 - 06:58 PM

Totally agree with the above post....and  we are happy it is all coming together for you

  I too sold the Vixen 80 fl    yes   of course we would miss it. But filling that 3 inch spot with the old Tak FC 76 was the only way I  would let the Vixen go.....Yeah so the focuser on the Vixen 80fl worked fine but  the focuser on the C-102fl needed the     upgrade   and the moonlite works  really well for that scope.

Nothing wrong with thrift and frugality      sometimes frugal is wise. All my scopes are used and just about all have been very very good. 

 

En Re rings     I  would agree that the Vixen rings are very good. Paralax  rings are great. I did like the look of Kastek rings

and recently tried  more blue   (actually silver colored) rings from Astro Huteck for the FC -76


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#52 starman876

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Posted 31 May 2021 - 06:29 AM

Thanks for reminding me I still have an FL90 I need to sell.  I love Fluorite scopes.   Can you imagine having  an 180mm fluorite waytogo.gif


Edited by starman876, 31 May 2021 - 06:31 AM.

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#53 Bomber Bob

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Posted 31 May 2021 - 08:01 AM

After what I saw last night with a 100mm... I'd have to wear a pace-maker while using a 180!


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#54 Defenderslideguitar

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Posted 31 May 2021 - 08:04 AM

No  we cannot imagine    a 180mm fluorite scope.

Wonder why Vixen did not go real big on the fl series?

With Takahashi    the FC-100 was middle sized between the the 76 -125  152   The FS-series   FS-102 also in the middle  FS-78  FS-128  152

but did Vixen let the 102 fluorite be tops in the fl series?


Edited by Defenderslideguitar, 31 May 2021 - 08:04 AM.


#55 CHASLX200

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Posted 31 May 2021 - 08:23 AM

No  we cannot imagine    a 180mm fluorite scope.

Wonder why Vixen did not go real big on the fl series?

With Takahashi    the FC-100 was middle sized between the the 76 -125  152   The FS-series   FS-102 also in the middle  FS-78  FS-128  152

but did Vixen let the 102 fluorite be tops in the fl series?

A 180mm version would cost 40k+ OTA alone. Tak did make a 8" for like 200k.



#56 Bomber Bob

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Posted 31 May 2021 - 09:10 AM

Continuing my observing report from my 4+ hour session last night, focusing on the FC-100...

 

The Finder is killing me!  My project for today:  Adapting my Meade "blue" 60mm R/A to this rig.  I may take the 50mm off, and store it.  It's ornamental for my purposes.  Did Tak have a grudge against finders with diagonals?

 

M13:  I spent over an hour observing & comparing.  I did not expect so much resolution at 150x in a 4" frac.  Unlike the Newt, I could look straight at the brilliant core, and halo stars would pop in & out of view.  SO many stars!  So many colors!  At 280x, it was ALL M13 in the field.  I'm gonna compare the Dakin 4 & C102 with the Tak, but it's a moot point.  The Tak's contrast & resolution are far superior to both achros.  Hands-down.  Planetary?  We'll see.


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#57 CHASLX200

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Posted 31 May 2021 - 09:16 AM

Continuing my observing report from my 4+ hour session last night, focusing on the FC-100...

 

The Finder is killing me!  My project for today:  Adapting my Meade "blue" 60mm R/A to this rig.  I may take the 50mm off, and store it.  It's ornamental for my purposes.  Did Tak have a grudge against finders with diagonals?

 

M13:  I spent over an hour observing & comparing.  I did not expect so much resolution at 150x in a 4" frac.  Unlike the Newt, I could look straight at the brilliant core, and halo stars would pop in & out of view.  SO many stars!  So many colors!  At 280x, it was ALL M13 in the field.  I'm gonna compare the Dakin 4 & C102 with the Tak, but it's a moot point.  The Tak's contrast & resolution are far superior to both achros.  Hands-down.  Planetary?  We'll see.

Tak never made a RA finder that i know of.  RA finders are the only way to go.  Wait till you see Jupiter at 300x with the Tak.


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#58 ltha

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Posted 31 May 2021 - 09:39 AM

Congratulations on the FC-100! My first APO was a FC-100 purchased from a fellow on Guam. It literally set the mark for refractor performance. Since then I have owned a couple of FC-60, FC-76, FC-100 and FC-125 scopes, along with three FC-50. Every one was excellent. Also ran through all of the FS series including three FS-152. A close friend ended up with my last FC-125 and he says it is the best scope optically that he has ever used. 
 

I found the 7x50 finders a bit awkward to use, but once I started using the accessory tube rings and the 11x70 finder I never went back. In fact, I just added the same setup to the TEC200ED and for the same reason - ergonomic placement.

 

Tak adapters are a bit arcane at first, but once you own a few Taks you seem to acquire enough of a variety to cover most circumstances. And besides, the minor PITA is more than offset when you are out under the stars....

Attached Thumbnails

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Edited by ltha, 31 May 2021 - 09:41 AM.

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#59 Bomber Bob

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Posted 31 May 2021 - 01:16 PM

IF Tak optics weren't so close to perfection, I'd have zero, 0, nada patience with the Finder & Focuser hardware.

 

For my FC-100:

 

- I swapped the Tak 50mm Finder with that cheap GSO 8x50 RACI.  It looks OK in the Tak bracket.

 

- The felt in the Parallax Rings is thin & light white & low-friction -- scope kept sliding down!  I added a layer of thicker gold scratchier felt (same as I use on the Dakin's rings).

 

Once the 2" Baader is attached, my Focuser gripes will be over.



#60 Terra Nova

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Posted 31 May 2021 - 02:18 PM

I like my Takahashi and Vixen finders. I’ve always found them very sharp. But then again, I don’t like right angle finders, I much prefer straight-thru viewing when I’m sighting on something.

 

And what’s wrong with the focusers? The focusers on my Taks have always been very smooth, same with the Vixens. I much prefer an rack and pinion focuser to a Crayford. I’ve never seen much need for dual speed either when dealing with good optics; a nimble touch is sufficient.


Edited by Terra Nova, 31 May 2021 - 02:22 PM.

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#61 Bomber Bob

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Posted 31 May 2021 - 02:25 PM

Unfortunately, in 2014 an idiot slammed into my Grabber Orange Mustang... totaled it, and gave me whiplash (2 cracked cervical vertebrae that had to be replaced by neck surgery).  I had the FC in my highest cradle, and it's still painful & awkward to use a straight-through finder anywhere near the zenith.

 

On the plus side, I could probably auction the Tak 50, and make enough $$$ to buy 2 Mizars...


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#62 Terra Nova

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Posted 31 May 2021 - 02:54 PM

Unfortunately, in 2014 an idiot slammed into my Grabber Orange Mustang... totaled it, and gave me whiplash (2 cracked cervical vertebrae that had to be replaced by neck surgery).  I had the FC in my highest cradle, and it's still painful & awkward to use a straight-through finder anywhere near the zenith.

 

On the plus side, I could probably auction the Tak 50, and make enough $$$ to buy 2 Mizars...

Have you ever used a GLP finder? I love using one with my TeleVue scopes.

 

PS, what about converting your Tak FC-50 into a super-duper RACI on your FC-100?


Edited by Terra Nova, 31 May 2021 - 02:56 PM.


#63 Bomber Bob

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Posted 31 May 2021 - 03:07 PM

Actually...  The Finder's eyepiece assembly threads off, and the base plate has a female thread -- looks larger than the 36mm.  Might be possible to thread a diagonal on it -- but I don't think it has enough back focus.  It's a 40mm female threaded ring.

 

If I put the FC-50 on the 100, it'll be a really heavy 4" g&g; and, I like using the Tiny Tak solo.

 

Haven't tried a GLP.  Heck!  It's only recently that I started buying & using RDFs...


Edited by Bomber Bob, 31 May 2021 - 06:08 PM.

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#64 Terra Nova

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Posted 31 May 2021 - 04:09 PM

Actually...  The Finder's eyepiece assembly threads off, and the base plate has a female thread -- looks larger than the 36mm.  Might be possible to thread a diagonal on it -- but I don't think it has enough back focus.

 

If I put the FC-50 on the 100, it'll be a really heavy 4" g&g; and, I like using the Tiny Tak solo.

 

Haven't tried a GLP.  Heck!  It's only recently that I started buying & using RDFs...

It only took me once to use a GLP finder to fall in love with it. Especially with a scope on an alt-az mount. They work great in conjunction with a pair of binoculars if light pollution is a problem. Just find your object in binoculars and move your scope into position so that your scope and its laser beam is pointing directly at your target as you watch through binoculars.


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#65 Bomber Bob

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Posted 31 May 2021 - 09:45 PM

Congratulations on the FC-100! My first APO was a FC-100 purchased from a fellow on Guam. It literally set the mark for refractor performance.

 

Thanks!  Yes, Tak does set the mark, and it's high up.  Both of my FCs are 30+ years old, yet they still compete well with the newer technologies, while keeping with many traditional designs.

 

After years with my FC-50, I knew what I was getting into with the FC-100 -- the great & the annoying.  [As an aside:  I've noticed over on the APO  Refractor Forum that some owners jump in when you criticize Tak - faster than on the Questar Forum.]  

 

Like CHAS & others, it's that first view of Jupiter that makes up my mind on a scope.  Tinsley 6 Cass, RV-6, Meade 826, APM 152ED, etc.  Seeing so much detail at just 160x in the FC-100 made up for all my gripes -- they became issues to resolve.


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#66 Bomber Bob

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Posted 01 June 2021 - 08:31 PM

Finally!  Just in time for 4 straight nights of clouds & rain...

 

The 2 Fireball Rings fit together perfectly & firmly, and the 2 male threaded sides fit the FC-100 & Baader 2" ClickLock adapter perfectly & firmly.  Problem Solved.  I did a Dumb Things BB Might Do test with a 2" diagonal attached.  No slipping, slumping, giving, etc.  I didn't try swinging from it with my full weight, but barring that, it's good to go...

 

Tak FC-100 Restore S23 - Baader 2 CL & GSO 50 RACI (LS).jpg Tak FC-100 Restore S25 - Baader 2 CL & GSO 50 RACI (RS).jpg

 

BIF:  Agena said they can't ask questions on the Refractor Forum -- CN Vendor Rules.  But... I don't think we're precluding from contacting Agena via email with helpful findings / suggestions.

 

In the mean time, if your OLD TAK has the same 2" plate as mine, you can mod it without making the change permanent, and enjoy the larger size accessories.


Edited by Bomber Bob, 02 June 2021 - 05:48 AM.

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#67 coopman

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Posted 02 June 2021 - 11:56 AM

I have a Baader click-lock installed on my FS-102 and it's staying there.  Fine accessory.  

I'm enjoying this thread and BB's enthusiasm for his Taks.


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#68 Terra Nova

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Posted 02 June 2021 - 12:22 PM

I’m currently using a Baader T-2 Quick Changer and Baader T-2 BBHS Dielectric Mirror Diagonal with a click-lock eyepiece holder on my Vixen ED102SS.


Edited by Terra Nova, 02 June 2021 - 03:31 PM.

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#69 Defenderslideguitar

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Posted 02 June 2021 - 02:01 PM

I have the Baader click lock   but I also have two  Tak 1.25 prism diagonals    that I think are very very good. I use them in the FC-100 and the FC 76 as well as the FS -128   but they also do nicely in the classic longfellow scopes like my Unitron 140 and the Tasco 10te    (both adapted to 1.25s previously)  and the C-102s as well


Edited by Defenderslideguitar, 02 June 2021 - 02:02 PM.

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#70 Bomber Bob

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Posted 02 June 2021 - 03:29 PM

I had to do some creative foam-carving to fit the GSO finder (and remove its eyepiece!) but I really like this TS-130 Case:

 

Tak FC-100 Extras T03 - TS Hard Case.jpg

 

The gray bag has the finder eyepiece in a 1.25" eyepiece bolt container.  I could've left the eyepiece on, but that would mean carving the lid foam.  Nope.  Long Term:  I want a Classic Nihon-Seiko, Towa (yeah, I typed that!), or Vixen 50mm RA Finder - preferably with a removable diagonal (or at least one that can swing down for storage).


Edited by Bomber Bob, 02 June 2021 - 04:09 PM.

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#71 starman876

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Posted 03 June 2021 - 07:00 AM

I had to do some creative foam-carving to fit the GSO finder (and remove its eyepiece!) but I really like this TS-130 Case:

 

attachicon.gifTak FC-100 Extras T03 - TS Hard Case.jpg

 

The gray bag has the finder eyepiece in a 1.25" eyepiece bolt container.  I could've left the eyepiece on, but that would mean carving the lid foam.  Nope.  Long Term:  I want a Classic Nihon-Seiko, Towa (yeah, I typed that!), or Vixen 50mm RA Finder - preferably with a removable diagonal (or at least one that can swing down for storage).

did a tube come in that TS 130 case?



#72 Bomber Bob

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Posted 03 June 2021 - 08:56 AM

did a tube come in that TS 130 case?

No!  I bought just the case.  No EDs for BB, UNLESS...  Vixen comes out with an AX 120 / 125 -- I'd take a serious look at one of those, especially at F8 or shorter...

 

I'm enjoying this thread and BB's enthusiasm for his Taks.

 

Thanks!  The Tiny Tak won me over.  Near-perfect GEM-like optics; Zeiss-grade mechanics.  BEST 50mm Refractor that I've ever used.  My FC-100 is like a stretched version of the 50 + a fantastic 2" focuser.

 

Use 1 Tak, and you gotta have another 1.  

 

Honestly, I don't have a need for a 3" APO, but these Battleship Gray 76s keep popping up on ZEN... and, I have that gray SC EQ, and no gray Tak for it...


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#73 Bomber Bob

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Posted 04 June 2021 - 06:32 AM

As of right now, the FC-100 Kit is done...

 

Tak FC-100 & Mizar SP S99 - Baader & GSO 2 Inch (FULL).jpg

 

Baader 2" ClickLock works perfectly.  Snug & secure fit.  Got some awe-inspiring Jupiter views this morning at 320x & sharp disk focus at 400x.  Outstanding 4" refractor?  Yes, it is.  

 

Tak FC-100 & Mizar SP S98 - Baader & GSO 2 Inch (CU).jpg

 

FYI:  The Mizar EQs look smaller than they are.  The AR-1 is slightly larger than this SP, but when Stubby is on it, it looks like an EQ-2...  The FC-100 really doesn't need 2 large c/ws.  I've seen some 3# ones on ZEN, so that'll be another auction or two.  And, of course, the GSO 8x50 RACI won't stay long-term.


Edited by Bomber Bob, 04 June 2021 - 06:33 AM.

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#74 starman876

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Posted 04 June 2021 - 07:34 AM

Looks great.   Will be a joy to use.


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#75 Bomber Bob

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Posted 04 June 2021 - 12:34 PM

It is a joy.  It's not that much heavier than the AT102ED F7 that I had & sold, yet it is so far superior optically & mechanically.  BUT that's not a slam on the ED.  For $600, a brand new AT102ED is a bargain.  Based on reports by Thomas & other owners, the TS102ED F11 & variants are also bargains, and may get closer to the 33-yr old Tak Fluorite than the "faster" versions...

 

That's why I had that thread on the Refractor Forum about all the 4" choices we have now.  For just about any experience level, budget, location, etc.  Throw in the brand new Vixen EDs, and the SVs, and the... it's overwhelming.

 

But, in the end:  It's tough to beat a Tak.


Edited by Bomber Bob, 04 June 2021 - 12:35 PM.



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