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The powerful and elusive Takahashi FC100N

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#1 Marcus Roman

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Posted 15 September 2020 - 01:21 PM

Some nights ago I had the opportunity to observe Jupiter and Saturn through a friend of mine’s Taskahashi FC-100N F/10 (1992 specimen).

The views were by far the best I ever saw, considering the limits due to the size of diameter....Saturn at 360X was simply beautiful (A and B rings clearly different in colours, Cassini ring, shadow of rings on globe etc., etc.)

I’d love if those who own one share their experiences and opinions on this elusive refractor...really the best 4” refractor ever?


Edited by Marcus Roman, 15 September 2020 - 01:30 PM.

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#2 vahe

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Posted 15 September 2020 - 01:53 PM

I have heard about this F/10 Tak.

My question; how does this long focus Tak stack up against FC100DL F/9 on planets? If I am not mistaken DL has one advantage, it can be used with most binoviewers

Any opinions?

.

Vahe



#3 Sky Muse

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Posted 15 September 2020 - 02:09 PM

Those of us who managed an FS-102 oft wish that they had been born earlier and had gotten an FC-100N instead.  I, personally, was ten years too late.



#4 Marcus Roman

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Posted 15 September 2020 - 03:56 PM

Those of us who managed an FS-102 oft wish that they had been born earlier and had gotten an FC-100N instead.  I, personally, was ten years too late.

I own and FS102 but Taka FC100N, a steinheil system (fluorite crown behind the flint) at F 10, just amazed me...it seems to me superior...I could not believe how good and sharp the images were of Saturn at 360x ! (with the Taka MC-Hi ortho 2,8mm) and Jupiter at 200x (with a Pentax SMC ortho 5mm) and 250x (with Taka MC Hi-ortho 4mm)...Seems it sucks magnifications without problems and images are always sharp...need to compare same night with my Pentax...


Edited by Marcus Roman, 15 September 2020 - 03:57 PM.


#5 Tyson M

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Posted 15 September 2020 - 04:02 PM

I thought the same thing.  In talking with other Tak addicts, it is likely about the same as the DL and DZ. Better later scopes perhaps better coatings?

 

Figure is another story, but all scopes likely great so no losers here.


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#6 Marcus Roman

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Posted 15 September 2020 - 04:08 PM

I thought the same thing.  In talking with other Tak addicts, it is likely about the same as the DL and DZ. Better later scopes perhaps better coatings?

 

Figure is another story, but all scopes likely great so no losers here.

Would be nice to compare the new DL and DZ to N....it was told -I don’t know how much grounded into facts the story- that older FC’s objectives were manually polished so with a rate of accuracy higher than the new ones, while modern coatings are better...anyone compared them?


Edited by Marcus Roman, 15 September 2020 - 04:09 PM.

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#7 Tyson M

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Posted 15 September 2020 - 04:18 PM

Well, because of imagers, standards have likely improved over time.  At least for sure, color correction has. 


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#8 N-1

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Posted 15 September 2020 - 04:42 PM

I don’t know how much grounded into facts the story- that older FC’s objectives were manually polished so with a rate of accuracy higher than the new ones, while modern coatings are better

Hand polishing/figuring to greater accuracy decades ago than what's possible with today's premium lens making equipment? I find that pretty hard to believe. Not saying it's impossible, just implausible.


Edited by N-1, 15 September 2020 - 04:43 PM.

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#9 aa6ww

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Posted 16 September 2020 - 09:34 AM

Excellent seeing conditions always make any small scope feel awesome to look through.

Saturn takes magnification very well since ring details are what you look for. Surface details on Saturn are limiting at best.

Jupiter doesn't take magnification as well, because the fine surface details get washed out when theres too much magnification on small refractors.

Mars now, seems to take magnification well also, since the surface details are very limited.

Ive had / have four Takahashi's, when the seeing is excellent, sometimes you cant find the magnification ceiling. Light gathering sometimes determines how much magnification a scope can put out on a specific planet.

All scopes turn into dream scopes when the seeing conditions are very good to excellent.

 

...Ralph


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#10 17thCentury

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Posted 16 September 2020 - 09:46 AM

Marcus Roman

 

Can you tell me what mount the FC 100N was on.

 

Thanks 

Scott



#11 Scott99

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Posted 16 September 2020 - 11:22 AM

only 360x???  not impressed....Vernonscope was making scopes back then that went up to 1800x!  lol.gif lol.gif


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#12 Marcus Roman

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Posted 16 September 2020 - 12:11 PM

Marcus Roman

 

Can you tell me what mount the FC 100N was on.

 

Thanks 

Scott

Yap, Vixen SXD2 + half pillar 


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#13 Marcus Roman

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Posted 16 September 2020 - 12:21 PM

only 360x???  not impressed....Vernonscope was making scopes back then that went up to 1800x!  lol.gif lol.gif

 

only 360x???  not impressed....Vernonscope was making scopes back then that went up to 1800x!  lol.gif lol.gif

Oh yeah, but stars and planets were just blurry poops!...:-) just kidding friend.



#14 Faber

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Posted 16 September 2020 - 01:28 PM

Hi to everyone,
A dear friend of mine in Italy compared the fc 100n and the dl and published in a site. I found them very similar and perhaps the fc100n little bit better, but the fc100n is heavier and has less backfocus. Anyway I’m happy with my fc 100 dl
Regards
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#15 Marcus Roman

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Posted 16 September 2020 - 02:02 PM

Hi to everyone,
A dear friend of mine in Italy compared the fc 100n and the dl and published in a site. I found them very similar and perhaps the fc100n little bit better, but the fc100n is heavier and has less backfocus. Anyway I’m happy with my fc 100 dl
Regards

Yap I read it....interesting but still am curious about others’ opinion....I will compare it with my Pentax 105SD also....



#16 25585

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Posted 16 September 2020 - 02:03 PM

Comparison of DC F7.4 and DL F9 http://scopeviews.co...akFC100DCDL.htm


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#17 Marcus Roman

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Posted 16 September 2020 - 02:08 PM

Yap I read it....interesting but still am curious about others’ opinion....I will compare it with my Pentax 105SD also....

Also, yes less back focus but I reached it adapting a Taka 1,25” prism directly to the 36,4 thread of one of the scope’s adaptors....so, no problem using also 1,25” eyepieces....on the other hand, I don’t think you can reach focus with a bino  unless you put a barlow in the optical train...didn’t try it. Anyway, guys, what a view with its 0,96” dedicated eyepieces, the MC Ortho...


Edited by Marcus Roman, 16 September 2020 - 02:09 PM.



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