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Takahashi 0.73X Reducer for FSQ-106EDX III

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#1 Ralph Paonessa

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Posted 24 June 2016 - 09:17 PM

Which Takahashi 0.73X reducer matches the FSQ-106EDX III, the scope with the CAA (Camera Angle Adjuster) and not the Captain's ("Capstan"?) wheel rotator?

 

And does it require an adapter to mate with the CAA??

 

Takahashi USA has an (annoyingly!) confusing array of System Charts listed, and I'm not sure which one(s) are relevant. (At least they're in English!) These are at www.takahashiamerica.com and click on System Charts at left.

 

The link for "FSQ-106EDX Visual/Imaging System Chart (TX)" downloads a file named FSQ106EDX I-V System Chart.pdf which appears to be the correct one. It shows Reducer QE which appears to fit into the hole in the CAA, with threads that screw onto the outside of the CAA with no adapter required. It was my understanding that this is how the reducer attaches, and that it was redesigned to fit into the CAA to compensate for the 25mm of back focus lost due to the CAA. (I have the 1.6X extender, and it fits in this way, but an adapter is required.)

 

The "FSQ-106EDX2 Visual/Imaging System Chart (TX)" includes a CAA, but the pictured Reducer looks different and requires an adapter. I don't think is what i need for the EDX III. (I have always been confused by the various 106-EDX I, II, III, IV. I am pretty sure I have the III, and I think the IV is a newer version with tweaked optics. Do the I and II actually exist, or are they mythical beasts??)

 

Bottom line questions:

  1. Are there TWO DIFFERENT 0.73X Reducer QE models, and if so, how do I tell them apart??
  2. Which one do I want for the FSQ 106-EDX III (with CAA), and how does it attach to the scope?

I am hoping that some knowledgeable Takahashers can set me straight. Thanks!

 

Ralph



#2 edif300

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Posted 25 June 2016 - 12:46 AM

There is only one QE-0.73X Reducer. But there are another two reducers available for the FSQ-106ED (645RD-0.72X and F3RD-0.6X).

For screwing this QE-0.73X reducer into the CAA you need the TKT36002 (or Tak importer's code for America: TRDC0106).


Edited by edif300, 25 June 2016 - 04:17 AM.


#3 Ralph Paonessa

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Posted 25 June 2016 - 02:18 AM

There is only one QE-0.73X Reducer. But there another two reducers available for the FSQ-106ED (645RD-0.72X and F3RD-0.6X).

For screwing this QE-0.73X reducer into the CAA you need the TKT36002 (or Tak importer's code for America: TRDC0106).

 

Thanks. That's good to know that the other reducers are not 0.73X

 

In my files I've found two System Charts that seem to apply to the FSQ-106EDX III:

 

 

Of course, they show different configurations for the Reducer QE. The first chart agrees with you that the TRDC0106 "RD Adapter (CAA) [TKT36002]" (#17) is needed to attach the "Reducer QE 0.73X [TKA36580]."

 

But the second chart shows "Reducer QE [TSQ0106RD] screwing directly into the CAA. It also shows a "CAA Reducer Coupling [TRDC0106]" to attach the Extender QE 1.6X (As also detailed by Rogelio Bernal Andreo).

 

I have the 1.6X Extender QE, and I'm sure I have the TRDC0106, which I use to attach it to the CAA.

 

The TRDC0106 adapter is listed by OPT, which says it's needed to attach the Reducer QE (no mention made of the Extender QE).

 

Either way, this is good for me: Assuming you're correct (which I do), I already have the required adapter. If no adapter is needed, as seemingly indicated in the second System Chart above, then I don't need an adapter.

 

Does anyone know what that "FSQ-106EDX I-V System Chart.pdf" is all about? It is titled "FSQ-106EDX Image/Visual Chart (TX)." Should I ignore it for my EDX III?

 

What a crazy mess of adapters and information! The different US part numbers don't add to the clarity, either. At least the scope is great.

 

Thanks for helping me sort this all out.

 

Ralph



#4 edif300

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Posted 25 June 2016 - 03:45 AM

First pdf file refers to FSQ-106EDX3 and the second pdf file for FSQ-106EDX (the - V comes for sure from file renaming and don't refers to FSQ-106EDX4).

Use the #17 for screwing the QE-RD into CCA.

#5 edif300

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Posted 25 June 2016 - 03:53 AM

It also shows a "CAA Reducer Coupling [TRDC0106]" to attach the Extender QE 1.6X (As also detailed by Rogelio Bernal Andreo).

 

 

 

Yes I know it. Years ago I spent some of my good time into configuring all his Takahashi imaging system. Some times some things are not explained as well as is in the reality.


Edited by edif300, 25 June 2016 - 03:54 AM.


#6 Ralph Paonessa

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Posted 25 June 2016 - 04:10 PM

First pdf file refers to FSQ-106EDX3 and the second pdf file for FSQ-106EDX (the - V comes for sure from file renaming and don't refers to FSQ-106EDX4).

Use the #17 for screwing the QE-RD into CCA.

 

IƱaki,

 

Thanks for the help. I'm not even sure where I found the first (correct) chart; I can't find it on the web now; it was probably from Takahashi Europe. It's not on the US site. But I will use that from now on. I'll ignore the confusing "I-V" chart; obviously there's no EDX5 yet, which should have told me something was wrong.

 

 

Some times some things are not explained as well as is in the reality.

 

At least the charts are not all in Japanese! But your explanations have helped. Thanks.

 

Ralph



#7 Ralph Paonessa

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Posted 25 June 2016 - 04:49 PM

I've found more Tak system charts at an Australian site. One is listed for the Extender QE with the EDX3: Attached File  System Chart FSQ-106EDX3 Reducer QE.pdf   29.44KB   90 downloads.

 

This shows an adapter "CA-35 (Sky-90) [TKA35201]" between the reducer and "Wide T-mount" to a 35mm camera. Will I need TKA35201 as well (to attach to my Wide T-mount and EOS 6D)?

 

Ralph



#8 edif300

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Posted 25 June 2016 - 05:23 PM

CA-35 (sky-90) is required in addition to Wide T-mount because the Metal Back Distance for this particular reducer is 72.2mm. 

 

Here you will find all system charts for all FSQ-106ED:

 

http://www.astrosurf...Q.htm#FSQ-106ED


Edited by edif300, 25 June 2016 - 05:24 PM.


#9 chancy

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Posted 21 September 2016 - 01:04 AM

Is there a chart for connecting the Extender 1.6 to the FSQ106 edx4 with the camera angle adjuster (CAA- TKP86200) that comes with it? The system charts to date show the extender 1.6 with the original setup without the CAA, but it would seem bizarre to set it up that way, instead of using the sturdier and imaging friendly CAA? 



#10 dawziecat

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Posted 21 September 2016 - 07:55 AM

Here are the images of my EDXIII and QE reducer.

Exploded.jpg



#11 chancy

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Posted 21 September 2016 - 11:33 PM

Terry, many thanks for your clear images. The issue is the CAA in the edx4 version is different than that of the edx3 version - at least the SKUs are not the same. So am just concerned the same setup may not work as well with the new edx4 version. :confused:



#12 dawziecat

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Posted 22 September 2016 - 12:55 PM

Chancy:

I have two CAAs. One off the EDXIII. The other off a TOA150. While they differ considerably in the method of attachment to the OTA, they are identical on the camera side. Both have TAK standard M92 male threads on that side and the TRDC0106 "bucket" adapter fits both equally well.

I feel certain the CAA on the EDXIV will have TAK M92 male threads as well. Put a tape or calipers across yours and see. If they're 92mm and male, the "bucket will fit."


Edited by dawziecat, 22 September 2016 - 12:56 PM.


#13 edif300

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Posted 23 September 2016 - 12:58 PM

The CAA on the FSQ-106EDX4 has M98

#14 edif300

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Posted 23 September 2016 - 01:00 PM

M98 / M98

#15 dawziecat

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Posted 23 September 2016 - 03:11 PM

Sorry for being wrong on this.

 

Can't help but wonder as to why Tak would make such a change?

So, the QE reducer is now useless on EDXIV and, presumably, all FSQ 'scopes going forward? :foreheadslap:



#16 edif300

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Posted 24 September 2016 - 03:03 AM

The 645RD is the reason. Before EDX4 the M98 CAA was a must purchase separetely for using a CAA with 645RD. Now comes installed.

 

Where is now the problem? there are still available 3 reducers including a F3 one... Why there is no choices? if you are extremely interested in the QE reducer go to purchase the M92 CAA  :foreheadslap:  :foreheadslap:



#17 dawziecat

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Posted 24 September 2016 - 08:07 AM

If the choice with an EDXIV is now to purchase a 645 instead of a QE, it's going to be a pretty expensive one! The 645 is $1930US!

The QE is "only" $710.

 Looks like replacing the CAA to enable using the QE is another $250US, more or less? Assuming you can get one . . . not many listings for CAAs. And they're every bit as confusing as the other TAK adapters. I already learned that when it become necessary to use the CAA off my TOA150 to mount a Moonlite focuser on my EDXIII. The CAA on the FSQ would not fit the focuser. The CAA on the 150 did. It's why I labeled the CAA as being from the 150 in the image attached, despite the OTA actually being an FSQ106EDXIII.

So, beware those seeking to swap CAAs!SSQ_Moonlite.jpg

 

Incidentally, the image shows the TRDC0106 and QE in place on the CAA.



#18 Denimsky

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Posted 24 September 2016 - 12:47 PM

Isn't this f3 reducer replacing QE?

https://www.optcorp....ed-xiii-x4.html

 

It is still more expensive than QE but it is quite faster than QE and much cheaper than 645.

http://www.takahashi...akahashi F3.pdf

 

Also EDX4 can still use a 0.73X QE according to the system chart.

https://www.cyclopso...VisualPhoto.pdf

 

18C is the QE reducer.

8L is included in EDX4 (which acts as a dust cap for CAA). 

 

I think the main reason for EDX4 is the new f3 reducer not 645 reducer.

The new f3 reducer which is bigger than QE needs CAA-250.


Edited by Denimsky, 24 September 2016 - 01:13 PM.


#19 edif300

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Posted 24 September 2016 - 01:05 PM

If the choice with an EDXIV is now to purchase a 645 instead of a QE, it's going to be a pretty expensive one! The 645 is $1930US!

The QE is "only" $710.

 

 

 

 

So, beware those seeking to swap CAAs!

 

 

Spending time into learning the all system is a good solution for these all nonexisting problems.
I don't understant why someone must take care since there is a M92/M98 adapter.

:confused:



#20 edif300

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Posted 25 September 2016 - 02:07 AM


I think the main reason for EDX4 is the new f3 reducer not 645 reducer.
The new f3 reducer which is bigger than QE needs CAA-250.

No.
F3 reducer has M72 P1.0 as QE-RD has.

Edited by edif300, 25 September 2016 - 02:12 AM.



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