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The Tak fc76 thread

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#1 Jsquared

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Posted 27 March 2020 - 10:43 AM

I just bought a tak fc76dcu with 1.7 extender. I’d like to start a thread for these little scopes to document experiences and observations. Currently I await a dovetail but have a daystar quark chromosphere. What’s your experience been ? Fav ep ? Any AP ? Binoviewers? Transport case ? Favorite targets ? Any and all topics re tak fc76 series ?


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#2 NickWDavis

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Posted 27 March 2020 - 10:55 AM

All I know is that I want one. 



#3 bbyrd

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Posted 27 March 2020 - 11:26 AM

I have a new fc76dcu but have not yet used. I had the chance to purchase a demo unit but decided to purchase thru Astronomics using their discount in support for CN. I am planning to setup and use in April.



#4 Jsquared

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Posted 27 March 2020 - 11:37 AM

All I know is that I want one.


Since I’m waiting for my dovetail I’ve not used it yet but my impression dare I say it is cute. So lightweight. The 1.7 extender adds little weight too. Planning to view the moon and sol at f12. I’ve a 1.25 amici prism diagonal on order to use with my 32 and 40 plossls for richfield correct image low mag scanning also.

The perfect grab n go scope. Someday I’ll have my Tec 140 but the dcu is a gem.


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#5 Bill Barlow

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Posted 27 March 2020 - 02:06 PM

I have owned a Tak 76 DCU for a little over a year and have been very happy with it.  Perfect grab-and-go scope on my lightweight mount.  Optics are extremely sharp, about perfect to my eye.  It is hard to believe that it is only 76mm.  I use it with the Tak 1.25" prism diagonal and 1.25" eyepieces to keep the back weight down.  Highly recommended!

 

Bill 


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#6 desertlens

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Posted 27 March 2020 - 02:35 PM

The FC-76 is a pleasure to use and I couldn't ask for better performance from a doublet. I reconfigured the visual back with a 2" Baader Click-Lock (+ the first Tak spacer) so that I could mount and focus the Tak-4 turret. Otherwise, I use it with a T2 BBHS mirror with a 2" nose. I prefer 1.25" eyepieces (usually DeLites or Tak LEs) in a scope this size. This simple configuration, by itself, easily qualifies as "an evening's entertainment".

 

TakFC76Dtz.jpg


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#7 barbie

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Posted 27 March 2020 - 02:41 PM

I've had and have used my Tak FC76 DCU with 1.7x Extender CQ and the views are simply awesome!  With this instrument in F12 configuaration, I've been able to split Sirius, observe Orion's Trap A-F, and use magnifications of up to 278X on the moon when viewing the crater Gassendi.  Just about all of the craterlets, rilles and other features were easily observed with this scope at 278X.  I would rate it as being better than my previous Tak FC100 DF and just as good as my vintage 1987 Tak FC76 classic, which Richard Wright(a well known imager here in the U.S.) said is the lens by which he based all others on for overall quality of figure and polish!!  That says alot about the FC76 DCU+ CQ extender combo.  For carrying/transport, I use a duffel bag lined with some foam cut from a mattress topper.  For a finder, I use a Telrad that I made a wood adapter plate for and that has a threaded hole in it to thread right onto the top screw on the Tak clam shell. I use a Japanese made Celestron Prism diagonal in my FC76DCU and have used Tak Abbe Orthos and TOE's which have provided the sharpest views of any 3" apo I've ever owned!! Waiting for the skies to cooperate so I can test out some Celestron Omni Plossls with this scope.  Anyone who purchases this combo will not be disappointed!!  Extremely pleased with mine!!!


Edited by barbie, 27 March 2020 - 02:48 PM.

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#8 213Cobra

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Posted 27 March 2020 - 06:20 PM

I just bought a tak fc76dcu with 1.7 extender. I’d like to start a thread for these little scopes to document experiences and observations. Currently I await a dovetail but have a daystar quark chromosphere. What’s your experience been ? Fav ep ? Any AP ? Binoviewers? Transport case ? Favorite targets ? Any and all topics re tak fc76 series ?

Despite having 85mm, 80mm, 60mm and 51mm refractors in that range, the DCU with 1,7X Extender will be my next telescope. -Phil


Edited by 213Cobra, 27 March 2020 - 06:44 PM.

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#9 Brollen

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Posted 27 March 2020 - 07:12 PM

All I know is that I want one. 

Me too. I have the FS-60Q which is amazing for 60mm. I dream of getting a FC76DCU and running them in tandem - swapping the Q module between them, but mostly having it on the FC76 and running the FS60 as a wide field instrument. That would be amazing I'm sure...


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#10 ken30809

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Posted 27 March 2020 - 07:49 PM

I'm currently on my 3rd Tak and I can tell you that I regret selling my sky-90 and fs60 back in the 2000's. I love my DL and will be following this post. The FC76 might be in the future :-) Takitis is tough to get over. Thanks for the thread.


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#11 starryhtx

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Posted 27 March 2020 - 09:27 PM

I love the Tak 76, seems to punch above its weight class.



#12 Kunama

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Posted 28 March 2020 - 03:28 AM

I converted my FS60CB to the FC76DCU/Q a few years ago but sold it.  

I recently picked up a mint condition 2014 FC76DC, haven’t got around to testing it yet...

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Edited by Kunama, 28 March 2020 - 03:57 AM.

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#13 Jsquared

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Posted 28 March 2020 - 11:08 AM

I converted my FS60CB to the FC76DCU/Q a few years ago but sold it.
I recently picked up a mint condition 2014 FC76DC, haven’t got around to testing it yet...


Can you describe your red dot finder and base.

#14 Kunama

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Posted 28 March 2020 - 03:22 PM

Can you describe your red dot finder and base.

The RDF is from Vixen and the base is from AstroShop on AliExpress.  The base is their Vixen/Tak base, I removed the 1/4” bolt from the clamshell and installed the base using a short 1/4” countersunk stainless steel setscrew.


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#15 MigL

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Posted 28 March 2020 - 03:42 PM

Hi !

 

For me it´s a question of time to get the Tak FC76 DCU with 1.7x Extender CQ, just waiting on a second unit in Europe, or if I wait a bit longer, a new one...

At the moment it´s difficult to find one (either used or new) on Spain or Europe for me... frown.gif

 

 

EDITED: by the way... the setup will be almost a copy of yours, Jsquared, with the AZ-GTi included :)


Edited by MigL, 29 March 2020 - 08:54 AM.


#16 Bill Barlow

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Posted 28 March 2020 - 07:41 PM

I guess there are not too many Tak dealers in Europe?


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#17 Jsquared

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Posted 29 March 2020 - 08:22 AM

First light last night. Mediocre seeing. Looked at moon Venus and Pleiades. Using 1.25 prism back focus wasn’t enough for televue EP so used noblex 12.5. The 1.7 extender worked well.


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#18 db2005

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Posted 29 March 2020 - 08:58 AM

I find my FC76Q (i.e. FC76DCU + extender) to be a marvellous combo for double stars, moon and planets and bright clusters. It is especially great for grab-and-go astronomy and is rarely noticeably affected even by mediocre seeing. The extender improves the color correction of the already excellent optics of the bare FC76DCU to almost unbelievable levels.

 

I have found I prefer using mine with a diagonal mirror rather than a prism. The color correction in the FC76Q is so good I can see a slight amount of false color with the prism, but not with a mirror.


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#19 donadani

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Posted 29 March 2020 - 10:24 AM

How does these screwable extenders work? is there any difference to the older extender Q´s (for example the 1,6x)? I thought they are more or less simple barlows and so color corretion should not be changed...? 


Edited by donadani, 29 March 2020 - 10:25 AM.


#20 MigL

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Posted 29 March 2020 - 10:39 AM

First light last night. Mediocre seeing. Looked at moon Venus and Pleiades. Using 1.25 prism back focus wasn’t enough for televue EP so used noblex 12.5. The 1.7 extender worked well.


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How was it using the noblex (previous docter) on Moon and Venus ?


Edited by MigL, 29 March 2020 - 10:39 AM.


#21 Tyson M

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Posted 29 March 2020 - 10:40 AM

How does these screwable extenders work? is there any difference to the older extender Q´s (for example the 1,6x)? I thought they are more or less simple barlows and so color corretion should not be changed...?


My understanding it is a high quality "powermate" of sorts made specifically for that scope to improve color correction, off axis spot size. Very expensive but each one is designed for that specific scope/scopes.
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#22 db2005

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Posted 29 March 2020 - 11:27 AM

My understanding it is a high quality "powermate" of sorts made specifically for that scope to improve color correction, off axis spot size. Very expensive but each one is designed for that specific scope/scopes.

It is also my understanding that the extender has been optically matched to produce a flat field and improve color correction. Indeed, in indoor tests with a very bright artificial star (an acid test for CA) I have found the amount of CA to be very noticeably reduced when using the extender. I was all the more impressed as the bare FC76DCU's color correction is excellent in its own right.


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#23 Jsquared

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Posted 29 March 2020 - 11:50 AM

How was it using the noblex (previous docter) on Moon and Venus ?


The noblex was outstanding on both the moon and Venus. Using extender contrast very nice. No false color even on bright moon. I’m going out tonight using my mirror diagonal so hopefully no back focus issues. Then I can compare.

I’m interested how high I can push mag on the moon. Maybe try my Tak toe 4 mm.


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#24 The Luckster

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Posted 29 March 2020 - 01:48 PM

Thanks a lot, folks...

 

I had all but talked myself out of "needing" to get the Tak FC-76, and now this thread pops up.

 

I don't need this torture...wink.gif

 

CSS

 

jason


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#25 barbie

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Posted 29 March 2020 - 04:42 PM

I agree with, and my actual use of the extender does reduce the color to below the threshold of visual detection.  The moon with Tak TOE 3.3 and 4 mm eyepieces is the best I've ever seen it in any small aperture refractor...etched and 3 dimensional in the eyepiece!!


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