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The earliest I can take the measurement is like 10th of March.

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Sedat, here is latest from Wayne, "All 3* versions of the FSQ106ED should all have the same thread dimension of the OTA which is M133X1"; what does M133X1 mean, I don't know. Any ideas? If you know what he means then we may not need to measure the threads. Thx


*:
•FSQ-106ED..........................(Old one)
•FSQ-106ED New “Q”............[with ‘Captain’s Wheel’]
•FSQ-106EDXIII.....................[without ‘Captain’s Wheel’]

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Hi Mike,

Finally, I am able to confirm that the thread is M133x1.

To be able to use this thread, you need to dismantle one more part from the rear of the scope:



First, you need to loosen the two 1,3mm socket head lock screws then, unthread the aluminium distance piece.





Then you reach the stainless steel collar where you will see this M133x1 thread





Once you remove the aluminium distance piece and leave the tube only with the SS collars, both EDXIII and ED with Captain's Wheel will be the same. I don't have access to a first generation FSQ106ED so I am unable to confirm whether it has the same carcass as the other two or not.

Just to help visualise the situation, here are 2nd and 3rd generation FSQ106 ED scopes once again:





Hope this helps.

Before I forget, you owe me a beer Mike Removing this last adaptor was a bit risky, I sweated a lot when I was removing it. Since I didn't have any exploded views of the scope, I wasn't sure if it had anything to do with the collimation of the rear lens group. I was lucky! It turned out to be just another adaptor, nothing more

Clear skies

Sedat

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Finally, I am able to confirm that the thread is M133x1.

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A drop of acetone in the four hex screws at the bottom of the focuser, wait a while, then tighten them exactly the same amount.

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Finally, I am able to confirm that the thread is M133x1.

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This is a real beauty! I want to thank you and Wayne to present this as a tangible option to us.

Unfortunately, current owners have already paid for the stock focuser.

Unless, someone has a real heavy rig to hang, he has to contend with the stock focuser.

Another problem I see here is losing the ability to play with the back focus as necessary. When you chose this option, you will be stuck with 1.5" focuser travel.

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Thanks to Wayne Schroeder of FeatherTouch, here is what an...

•FSQ-106EDXIII...
•A35-503-FSQ106ED...
•FTF3515B-A...

...integration looks like; pretty impressive! ONLY now if Takahashi would also offer one out of the box? Will try contacting Art of TNR; your support will be greatly appreciated. Regards

Image...

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Another problem I see here is losing the ability to play with the back focus as necessary. When you chose this option, you will be stuck with 1.5" focuser travel.

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