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The Dai-Ichi 80mm f15 has landed - Help required..!

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#1 Kokatha man

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Posted 20 December 2017 - 11:50 PM

EDIT: my last post in this thread (Post #6) explains the small dilemma I've gotten myself into...hope someone may assist! lol.gif

 

Hot on the heels of the 60mm f15 Eikow arriving from Perth yesterday, & the subject of my other thread started today the Dai-Ichi Kogaku 80mm f15 arrived a couple of hours ago from Brisbane also - all we need do now is wait until Saturday for Rafe to bring home from Melbourne the 100mm f10 Royal Astro Newtonian: spanning/scouring the continent from Perth to Brisbane to Melbourne & beyond when you throw in Milt's Sears 6333, from Jacksonville Florida a few weeks back for good measure..! rofl2.gif

 

Not much reporting here except the pikkies - re-packed by Nathan (nersky) in its original boxes: the paint on all ota's (main, guide-scope & finder) is very good to excellent...the objectives look scratch-free but quite dirty & possibly mould in the main objective rear lens - hopefully this can be dealt with & Bob's tuition today will now come in double-handy! waytogo.gif

 

Queensland being tropical I suppose this counters the comments I made in my Eikow thread about Western Australia: quite a lot of the chrome parts show a bit of rust & specialised parts will be re-chromed properly...although bog-standard nuts & bolts will just be substituted for new, or perhaps stainless...

 

EQ looks fine but needs a strip-down & service etc along with a new paint job...I have a couple of new cans of quality crinkle black in my workshop, so this mount & the little Tasco plus the Royal Astro should mean I have enough of this to finish any painting required...

 

Even came with its own bubble-level compass I note! wink.gif

 

I'll post more info etc as I look deeper but it sure looks like I've got my work cut out atm...but even so, we'll be imaging Mars in the morning with the C14..! lol.gif

 

Dai-Ichi-Kogaku-2.jpg

 

Dai-Ichi-Kogaku-3.jpg

 

Dai-Ichi-Kogaku-4.jpg

 

Dai-Ichi-Kogaku-5.jpg

 

Dai-Ichi-Kogaku-6.jpg

 

Dai-Ichi-Kogaku-7.jpg


Edited by Kokatha man, 21 December 2017 - 06:32 PM.

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#2 Kokatha man

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Posted 21 December 2017 - 04:54 AM

Deceptive appearances - meaning very good, once examined! waytogo.gif

 

I was in a bit of a hurry after sitting at home these last couple of days expecting either scope to arrive anytime...naturally the "ETA's" were too optimistic due to the heavy Xmas rush on couriers! We couldn't get out of the house fast enough for a leisurely coffee down by the Onkaparinga River for a bit of relaxed river-gazing after I unpacked & made my earlier report above! smile.gif

 

My earlier check of the focuser had me thinking along the lines of "whoa! - what sort of material is this focuser made of?"...but the funny sound from me tapping on it turned out to be because it was one very solid casting, way better in terms of solidity & build than many modern ones I've dealt with! wink.gif

 

Very snug & smooth action also, & it has that additional little length of sliding drawtube that the Sears 6333 also has, but it seems the screw-on fitting for it is missing...although I haven't checked the box very thoroughly as yet, but it shouldn't be too hard to fabricate & I can make it as a brass compression band unit as well. smile.gif

 

Unscrewing that additional drawtube section look like a fitting will accept 1&1/4" ep's which were probably just becoming the rage around about when this was manufactured - the inside diameter is just under 36mm so perhaps instead of making a screw-on piece for the extra slide of the drawtube (if it doesn't turn up in the box somewhere!) I'd be better off turning it into an 1&1/4" drawtube straight off! wink.gif

 

Tbh, everything about this scope is very solid & well-made...one might even suggest a tad "over-engineered" insomuch as the gauge or thickness of tubes & castings etc is concerned...I've just measured the thickness of the ally ota & it has a hefty 2.4mm wall-thickness! shocked.gif

 

As can be seen I already have the objective cell & lenses apart & there is no mould, just a bit of the dust is clumped into little spots I thought were mould at first...I'll restore the ota of this scope first for a couple of reasons - only the focuser needs a re-paint & that should be easy...that & a clean of the objective & wipe-down of the tube...I have tube rings or I can easily fit the ones that came with it onto a piece of dove-tail bar to put it on the EQ6 - the restoring of the knobs & knurled screws etc can wait but I'm really eager to star-test this baby & see if the attention to detail has any counter-part in its' optical performance. smile.gif

 

Piks of the focuser, the metallic description label & the dis-assembled objective. (employed one of Bob's suggestions here of using a cardboard mask on the rear lens for added protection as I unscrewed the retainer ring, which was only just snugged up - & I recall reading here on CN that this was the way to re-tighten that element)

 

In a clear image like the one of the scope's specifications below, it appears that it is actually an "I" as the upright for the "D" that encompasses the "K" - seems reasonable for a "Dai Ichi Kogaku" I suppose..! lol.gif

 

Dai-Ichi-Kogaku-Focuser.jpg

 

Dai-Ichi-Kogaku-IDplate.jpg

 

Dai-Ichi-Kogaku-ObjectiveCell&Lenses.jpg

 

 

 


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#3 shredder1656

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Posted 21 December 2017 - 05:04 AM

Congrats again!!! You're far more experienced than I in this, but I share your excitement. It's quite intoxicating and severely addicting. LOL

Nice catch!

It's interesting, to me anyway, that when you were buying Uncle Milt's sharp looking Sears, he was modifying a clamshell for me. I had an extra vintage eq mount I was going to sell. He commented to me about a gentleman from Australia that was buying his Sears, and asked permission to offer the mount to the buyer. That was YOU. LOL Obviously, you didn't need it, but it's quite fun to read your posts, and to realize the faint connection.

Nice work, and nice writing. Good luck.

#4 Kokatha man

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Posted 21 December 2017 - 05:20 AM

Thanks shredder - I well remember Milt mentioning your mount & if I recall I was more than half-interested at the time...but something inside was telling me that I had to try & slow down wanting everything & restore the old Tasco EQ mount that a friend had picked up at a rubbish dump for me years earlier for the Sears...I had promised parts of it to a friend but I found him an almost new CG3 for next-to-nothing just up the street from me - & am giving him that instead. smile.gif

 

Now that stuff about "slowing down" all seems rather absurd, another 3 scopes later in less weeks than that - I think..!!! rofl2.gif

 

For now I'm making myself take deep breaths & know that I have 3 serious projects to work on...plus finish the Tasco mount & modify those Canon rings.

 

I learnt quickly that these smaller clamshells are rather hard to find nowadays, so for the Canon clamps I'll bolt (setscrew) them to a suitable bar & possibly turn the feet down or at least re-shape them to look like a "made-unit" with the bar, finishing with something like crinkle black for the "spiv" element to their appearance. wink.gif


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#5 earlyriser

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Posted 21 December 2017 - 06:13 AM

Nice scope. That Dai-Ichi Kogaku 80mm f15 resembles an old Pentax 100.



#6 Kokatha man

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Posted 21 December 2017 - 06:14 PM

I'll have to check some pikkies, e/riser. wink.gif

 

Slight problem rofl2.gif - in my haste to mark the facing sides of the pair of objective lenses for the D-I Koguka as well as how they mate in rotational orientation - plus the positions of the foil spacer tabs...I forgot which lens was meant to face the front of the scope..!!! bangbang.gif fingertap.gif gaah.gif 

 

I'm fairly certain, but perhaps by identifying each lens' appearance someone might tell me which one faces the sky..!

 

One lens is thinner & is bi-convex. (I believe this is the front element btw)

 

The other is thicker, has the foil spacers affixed to it & is plano-concave. (the one I believe is the rear element!)

 

The preceding has been copied from the Eikow thread of mine - hopefully someone will chime in & put me out of the misery of putting it back together only to find I've reversed them unintentionally..!  foreheadslap.gif


Edited by Kokatha man, 21 December 2017 - 06:16 PM.


#7 CHASLX200

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Posted 21 December 2017 - 06:42 PM

What year was this scope made?  80's?



#8 roscoe

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Posted 21 December 2017 - 06:58 PM

Plano-concave in the rear, double convex in the front, (sky side) with the less-curved face toward the sky.



#9 Kokatha man

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Posted 21 December 2017 - 07:01 PM

According to the former owner Nathan who I think inherited it from his uncle (he has said he inherited it) the scope is "mid 80's to early 90's" era: https://www.cloudyni...d-on-refractor/

 

As I mentioned elsewhere, he decided to sell the scope & when I rang him he pointed out that thread where he'd investigated it's origins...why I cryptically told him NOT to try cleaning the lenses - I had a vested interested by then..! lol.gif

 

We've been in contact & I've asked for any additional details he might have on the scope: it has another ID on the focuser with  " Supplied by Audio Optics Binocular & Telescope Specialists" with a Brisbane, Queensland address etc - this shop is no longer in existence but I intend investigating further there as well...



#10 Kokatha man

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Posted 21 December 2017 - 07:04 PM

Plano-concave in the rear, double convex in the front, (sky side) with the less-curved face toward the sky.

 

Thanks roscoe - that confirms my thoughts!  waytogo.gifwaytogo.gif waytogo.gif



#11 Kokatha man

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Posted 21 December 2017 - 10:33 PM

Thanks for that quick reply earlier roscoe - the D-I Kogaku objective is now back in its thoroughly-cleaned cell & looking 1000% on what it was before...even my obsessive nature finally called it quits after numerous re-washes of the rear face of the rear lens with some "staining" that although very much reduced, I couldn't eradicate entirely! grin.gif lol.gif

 

This was after repeatedly going back into the process Bob described in the Eikow thread & also alternating with alcohol & pure acetone: it is as pristine as it is ever going to be...I've cleaned the outside of the ota with only a damp, soapy cloth & dried it as the paint was excellent - but before I put the cell back in the ota I need to paint the foremost baffle again...& will finish with a very flat black repaint of the inside of the ota! (it has 2 stepped baffles)

 

Then it's repaint the focuser & it'll be ready for the night sky! :)

 

Thanks again, a top forum to be involved with! waytogo.gif


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#12 Kokatha man

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Posted 22 December 2017 - 04:09 AM

...after washing the objective lens cell I put the lenses back in as told above because the cell was perfectly fine with only a couple of chips in the paint on the very front of the rim - the dew-shield covers this so I only need a spot touch-up.

 

The focuser is finished with the same satin black paint so I have just picked up the correct spray can to do this once I've dis-assembled & degreased etc that part...also grabbed some paint-stripper (non caustic) to remove the paint from the brushed ally focus knobs - no idea why they painted them but perhaps that was the "sexy" look back then..?!? lol.gif

 

They'll look much better accented against the satin black of the main focuser body with the chrome focus lock & smaller finder scope fittings... smile.gif

 

I've also sprayed the inside of the ota with flat black chalk/blackboard paint, it's the only really flat we seem to have available...I'm aware of Krylon (?) but it should suffice quite adequately - no way will I attempt to flock it...the C11 & C14 where I even flocked the secondary baffle as well as the primary baffle was more than enough there...as I said this scope has a larger-aperture baffle towards the objective end & a smaller one down nearer the focuser end. 

 

I know I'm a bit of a gadfly when it comes to concentrating on one job at a time but it helps with my short attention-span rofl2.gif  - I'm moving the degreased layout of Tasco EQ mount parts to one side of the work table so I can layout the D-I Koguka mount parts for dis-assembly & rebuild/paint etc.....I'm fired up with getting this mount restored first even though I'll have to wait for the chrome-factory to re-open after the Xmas wait for both sets of parts...but the tube rings for this mount can easily be mounted onto a dove-tail bar in the interim for scope testing under the night sky as I mentioned earlier...

 

My "confession" wink.gif to explain why this particular scope has become the #1 priority is probably because these slightly larger scopes with guide as well as finder scopes were likely the ultimate "dream wish-list scope" for me as a kid...an 80mm f15 is not quite as common as 60mm f15's & I thought that they really looked the "thing" - & old Patrick Moore in his books I read at the public libraries with his "a 3" refractor is the smallest sized scope that you can do any really serious observing with!" wink.gif

 

Of course it could be a lemon, lol.gif but with what I see as the build-quality...& a couple of good appraisals...as well as knowing this was certainly not a cheap unit to purchase, has me hoping it's a good 'un. smile.gif fingerscrossed.gif

 

More piks when I've re-installed the lens cell & focuser after restoration (hopefully before Xmas)


Edited by Kokatha man, 22 December 2017 - 04:11 AM.


#13 roscoe

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Posted 22 December 2017 - 07:44 AM

If you've painted the inside of the scope, you might want to let it sit around for a few days or more to let the paint cure and off-gas, you can risk fogging the inside of your objective otherwise.

If you have a place where there is air movement, that'll help.  My house has hot-air heat, I usually put scope tubes on one of the grates in the floor to let the hot air blow through the tube,  otherwise...hot and dry for a few days....

 

PS thanks for clearing up the mystery of why you were the only person in CN history to strongly advise against cleaning an objective!


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#14 Kokatha man

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Posted 22 December 2017 - 08:51 AM

If you've painted the inside of the scope, you might want to let it sit around for a few days or more to let the paint cure and off-gas, you can risk fogging the inside of your objective otherwise.

If you have a place where there is air movement, that'll help.  My house has hot-air heat, I usually put scope tubes on one of the grates in the floor to let the hot air blow through the tube,  otherwise...hot and dry for a few days....

 

PS thanks for clearing up the mystery of why you were the only person in CN history to strongly advise against cleaning an objective!

Heh-hee - I had no intention of letting Nathan take the job on roscoe..! lol.gif

 

The fan has been blowing through the ota since this afternoon tbh, & also being realistic I won't be putting the cell back in until I've painted & serviced the focuser. (& I found the end-fitting of the drawtube for the ep's that I thought was missing...)

 

Putting it back together before Xmas was uber-optimistic on my part & your advice about letting it dry & cure thoroughly is right waytogo.gif - now that I have the Royal Astro 4" f10 Newt in my hot little hands I want to clean the mirrors which upon inspection doesn''t look too bad at all! smile.gif



#15 Bomber Bob

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Posted 22 December 2017 - 09:18 AM

You got a very interesting Late Classic Period scope.  It has attributes of DK, Hino/Mizar, & Towa:  The mount shafts are longer than the Towa EQ-1; the counterweights are identical to those on my Hino/Mizar; the scope label could have come from an early 80s Vixen (or, my Kenko 125C).  It's like DK picked & chose components from the few Japanese companies still cranking out scopes at that time -- that's not a criticism!  You got an uncommon refractor in a very good aperture that appears to be near 100% complete -- definitely one to hold on to.  One of these popped up on eBay about a year ago - not as nice as yours - and I thought about snagging it, just for the reasons I posted.

 

The lens cell looks Towa, but with this scope, any of those companies could've made the optics.  Is that a 40mm guide-scope?  We know Royal made many of those -- and they tend to be very good.



#16 Kokatha man

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Posted 22 December 2017 - 05:51 PM

Thanks Bob - your appraisal/description of where it might sit in the "genre" is somewhat similar to my own, although of course mine lacked your expert knowledge of the various manufacturers & assemblers et al of many scopes in these eras...not to mention the distributors in various countries, who placed their own "branding" on these scopes. (my "Zemex" branded Eikow being one such example, the only other mention of Zemex were vintage binoculars on eBay awhile ago...)

The Royal Astro 4" f10 which arrived with Rafe (my eldest son) last night has a Swift finder on it...no idea whether it was original or found its way on later, but that's another kettle of fish I suppose...could there have been "mix & matches" from assemblers etc of various scopes/models - or are we seeing something purely personal from a specific owner in these instances..?

I'll make another thread lol.gif on the Royal Astro in a few minutes with a pikky of the Swift finder on an aspect I found quite interesting. (& unusual for me wink.gif )

EDIT: yes it is a 40mm f11.25 guider...one of my jobs today is cleaning the optics etc & seeing what it's like! smile.gif


Edited by Kokatha man, 22 December 2017 - 05:53 PM.


#17 Kokatha man

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Posted 22 December 2017 - 09:08 PM

EDIT: yes it is a 40mm f11.25 guider...one of my jobs today is cleaning the optics etc & seeing what it's like! smile.gif

...just removed the objective lenses of the guide scope (double, foil-spaced) from its cell after quite a bit of restrained struggling with the retainer ring - the little carbide-tipped marking pen is very good at scribing the edge of the glass lenses with minimal pressure to mark alignment & orientation etc... waytogo.gif

 

This is really starting to look like someone interfered with the guide-scope at one stage, applying a black spray paint to the inside of the spacer which appears to me to be a piece of neatly-fitting pvc tubing!!! shocked.gif ...making me entertain the possibility that this is a substitute spacer, longer than the original perhaps to eliminate unscrewing the original positioning of the retainer ring from much further down the internal threading of the objective cell.

 

At any rate it still meant a lot of unscrewing & with a shorter spacer (maybe in the original configuration?) the amount of unscrewing would have been considerably greater again - & it was a real %$#@! even with the amount I had to unscrew, resorting to a little tool I've used before in similar circumstances. wink.gif

 

Conjecture, but if for some reason the original owner had wanted to clean the back of the guide scope objective for any reason it makes sense - I'll be getting out the flat black chalk/blackboard spray can again today, it seems..!

 

ps: whoever did this also managed to give the back of the rear lens a light spray of black also - struth! lol.gif


Edited by Kokatha man, 22 December 2017 - 09:10 PM.


#18 Kokatha man

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Posted 23 December 2017 - 09:59 PM

I've washed both lenses from the little 40mm X 450mm f/l "guide" scope without any problems, sitting ready to go back in the cleaned etc objective cell, but am re-painting the "spacer" that goes before the retainer ring: a bit of an apology to the former/original owner...he didn't really spray what I think is a replacement spacer whilst it was still in the cell with the lenses, it was just paint flecks from unscrewing the retainer ring! lol.gif

 

I'd blown on them & they hadn't moved so I thought the worst as far as previous possibilities, but once the lens was out the rocket blower puffed them away easily... wink.gif

 

I'm re-painting the spacer atm & will do the inside of this guider's ota before calling it a day: all the extra stuff around the house at Xmas with the family coming down limits the available time for this kind of work atm... wink.gif

 

Dai-Ichi_Kogaku-GuiderObjectiveLensWashed.jpg


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#19 Kokatha man

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Posted 24 December 2017 - 05:48 AM

...the little 6X30mm (clear aperture) finder scope is only a glued doublet like most of today's finders...not the air/foil spaced doublets of the main & guider scopes. wink.gif

 

I've flat-blacked the inside of the guider ota & given it 3 coats of flat white on the outside to spruce it up quite a bit, as said the guider objective lenses are ready to re-install in their cell but getting the retainer ring to budge in the finder cell was a bit more difficult...

 

I had to resort to drizzling hot water over the outside of the cell from the laundry tap/faucet to get the metal to expand & allow the retainer to come free, which it did & then unscrewed very easily - sometimes these tricks work...& sometimes they don't wink.gif - for the Royal Astro secondary cell it might, or might not work... undecided.gif

 

Probably won't attempt to do anything tomorrow (Xmas) or I might get into strife with Pat but I've burnished the knurled chrome nuts etc & placed new stainless steel washers under them on the guide-scope rings which secure them to the main ota body...after tomorrow it will be time to re-assemble the main scope's objective cell onto the scope tube & put together it & the guide scope - after I have cleaned &/or painted their focusers... 

 

I have a bit of an imperative to push through some of this work on the D-I Koguka so that I can test it on the EQ6 & also make sure there aren't too many parts of too many different scopes laying around to confuse my ageing brain any more than it normally is..! lol.gif


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#20 shredder1656

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Posted 24 December 2017 - 06:14 AM

...the little 6X30mm (clear aperture) finder scope is only a glued doublet like most of today's finders...not the air/foil spaced doublets of the main & guider scopes. wink.gif

 

I've flat-blacked the inside of the guider ota & given it 3 coats of flat white on the outside to spruce it up quite a bit, as said the guider objective lenses are ready to re-install in their cell but getting the retainer ring to budge in the finder cell was a bit more difficult...

 

I had to resort to drizzling hot water over the outside of the cell from the laundry tap/faucet to get the metal to expand & allow the retainer to come free, which it did & then unscrewed very easily - sometimes these tricks work...& sometimes they don't wink.gif - for the Royal Astro secondary cell it might, or might not work... undecided.gif

 

Probably won't attempt to do anything tomorrow (Xmas) or I might get into strife with Pat but I've burnished the knurled chrome nuts etc & placed new stainless steel washers under them on the guide-scope rings which secure them to the main ota body...after tomorrow it will be time to re-assemble the main scope's objective cell onto the scope tube & put together it & the guide scope - after I have cleaned &/or painted their focusers... 

 

I have a bit of an imperative to push through some of this work on the D-I Koguka so that I can test it on the EQ6 & also make sure there aren't too many parts of too many different scopes laying around to confuse my ageing brain any more than it normally is..! lol.gif

Great commentary!

 

I visited your website.  Impressive genealogy.  Amazing talent.  I don't know if I will visit too frequently, though.  I do not need to add astrophotography to the millstone of classic scopes that is around my neck.  LOL

 

Seriously, great respect for your history, obstacles you've overcome, and your talent.  Nice work. 



#21 Kokatha man

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Posted 25 December 2017 - 05:13 AM

Thanks shredder! smile.gif

Sneaked out after everyone went home later this afternoon...I had a very nice view of the Moon's First Quarter just a few minutes ago shortly after the Sun had set...this was with the guide scope (40mm X 450mm f/l) & an 18mm kellner for 25X. Balanced against a post held in my hands isn't the best, but it was a good peek. wink.gif

 

I'll have another peep a bit later to see what sort of CA this throws up, but it is finished ready for re-installing on the main ota: have painted the finder scope inside & outside & dis-assembled the ep lenses etc for cleaning tomorrow & maybe re-assembling the finder fully...the test run of this scope is getting very close now. smile.gif

 

I thought I might've had the stainless screws to replace a few for the focuser etc but have resorted to burnishing the existing ones with a brass brush as a temporary solution - actually they have come up very well as have the knurled nuts & finder & guider alignment screws etc...some definitely won't require re-chroming, a tribute to the quality of the chrome-work so many years ago now..! waytogo.gif



#22 Kokatha man

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Posted 25 December 2017 - 05:58 AM

ps: Talk about a kid re-juvenated! lol.gif

 

Took another look at the Moon, much brighter & a bit lower down, so easier to balance the guider in my hands...cannot see any CA whatsoever atm although it must be there!

 

Pin-point stars all around the sky & Sirius also showed no CA that I could detect: I'm probably going hypo (not my diabetes! wink.gif ) but am getting really excited wondering how the main scope will perform in a couple of nights time...hope it isn't a let-down from the guide scope..! lol.gif

 

You'll have to excuse me but it's the first taste of old Japanese glass for this old kid! smile.gif



#23 Kokatha man

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Posted 25 December 2017 - 06:49 AM

...the re-furbished guide scope. (or "subscope" as the manual puts it...drawtube pulled way out for focus without diagonal in place)

Dai-Ichi-Kogaku-GuidescopeRefurbished.jpg
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#24 Kokatha man

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Posted 25 December 2017 - 07:37 PM

An addendum to the previous posts re the guide-scope: with a Celestron 0.965" diagonal in the focuser, focus is achieved with about 2" of the tube extended, nothing like that shown in the image in the post above. wink.gif If I go for one of those "off the shelf" 0.965" - 1.25" diagonals that I see Agena advertising I should be ok. (I think...read somewhere about a cautionary comment about the amount of extra light-path needed, maybe better to just lathe a little fitting up & be done with it.) 

 

I noticed a little piece of "packing" in the shape of a semi-encompassing strip of material (plastic, paper?) on one of the focuser knob axles - the main focuser has one also, only on 1 side strangely...

 

Anyway, I lost the guide scope's one & putting it back together noticed that the action was a little bit lumpy...so I made 1 then 2 for both axles out of some shrink-wrap electrical insulation tubing/spaghetti: this seemed to help somewhat but then searching around I came across this little spring-tensioner strip I'd taken from a very cheap plastic focuser that came into my possession eons ago - this completed the job & the guide scope now has a very smooth & tactile focus mechanism as well as what seems excellent optical qualities..! waytogo.gifwaytogo.gif

 

You can see the little bits of packing & 1 of them close-up in the inset of pikky #1 & the spring tensioner clip in pikky #2...this bears down with adjustable pressure onto the focuser shafts, depending upon how tightly you screw down the 2 screws that hold the plate down...

 

I believe it might be a common thing on modern r&p focusers but obviously not on the D-I Koguka nor the Eikow, although I haven't checked out the Royal Astro yet.

 

Anyway, it has turned the focuser action into a delight, so I might make one up from a small strip of hard brass for the main focuser should I feel it needs one - smooth-acting, snug focusers are important mechanisms imo..! wink.gif

 

Dai-Ichi-Kogaku-GuidescopeFocuserMods#1.jpg

 

Dai-Ichi-Kogaku-GuidescopeFocuserMods#2.jpg


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#25 Kokatha man

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Posted 25 December 2017 - 10:33 PM

...a bit of trivia now: obviously miss-spelling "Kogaku" in various postings I've made lately...mainly "Koguka" lol.gif I resumed my investigation of the translation of the name of this company/manufacturer earlier today.

 

Someone above said it reminded them of an old Pentax...Dai Ichi Kogaku (as best or nearest I can find meaning "Number One Optical") supplied quite a few scopes &/or parts to other telescope makers etc...Vixen & Antares being a couple & several more very reputable telescope makers whose names have escaped me only an hour or so after reading through reams of internet information - my memory is really starting to get tired very quickly...or as I like to say, I'm getting better at letting all the inconsequential dross sink down quickly into the silt at the bottom of my memory tanks! lol.gif

 

Perhaps that's another take on Bob's comments earlier in this thread...to him there were similarities with various other "brands"...maybe because these "brands" used components from D-I K on those particular scopes he drew parallels with...confused1.gif

 

A nice warm day for painting btw... wink.gif

 

ps: Pentax & Kenko were 2 of the other manufacturers Dai Ichi Kogaku worked with &/or supplied parts for from my searches...


Edited by Kokatha man, 25 December 2017 - 11:20 PM.



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