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GOTO Kogaku Comet?

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#1 ValtsT

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Posted 26 May 2018 - 11:13 PM

Greetings,

 

I recently picked up this up for a very good price.  I believe it is a Comet.  Approx 40mm doublet lens cell.  Unfortunately there is no mount, but all other accessories are included and in good condition.  The tube has some paint chips.   Beautiful wood case.  The only thing that was concerning was that someone disassembled the lens doublet and put it together backwards!!$&?  Luckily I cleaned it all up and the glass was still perfect - put it back correctly and all is good.

 

I plan on fabricating a replica mount as others have on this forum - I cant wait!

 

Any ideas as to the date of manufacture?

 

Valts

goto label.jpg

goto open box.jpg


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#2 Chuck Hards

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Posted 27 May 2018 - 12:19 AM

Nice find!

 

Here is a link to a collection of Goto threads, including the Comet.   LINK



#3 starman876

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Posted 27 May 2018 - 09:08 AM

Great looking scope.  Great findwaytogo.gif



#4 Stew44

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Posted 27 May 2018 - 04:10 PM

Likely post war and if Goto Kogaku eyepieces, earlier than 1959, but more than that is tough.

#5 ValtsT

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Posted 10 June 2018 - 01:41 PM

I have finally completed restoration of the GOTO Kogaku Comet.  I used a second-hand tripod base and attempted to match the style of the GOTO catalog pages as much as possible.  The tripod legs are mahogany.  I did touch-up the paint on the tube because of severe chipping and scratches.  The altitude bearing was hand cut from an engineering grade plastic.  The alt-az movements are actually quite smooth.  I cant wait for some clear skies.

 

Comet 103-1.jpg

Comet 103-2.jpg

Comet 103-3.jpg


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#6 Bomber Bob

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Posted 10 June 2018 - 02:03 PM

Remarkable restoration!  Look forward to hearing your sky test!


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#7 Terra Nova

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Posted 10 June 2018 - 07:58 PM

Goto paid attention to ever detail. The 60mm alt-az model I had, had the most beautiful tripod bolts wth the Goto symbol in raised relief on the bolt-heads of the three leg bolts.


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#8 memento

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Posted 11 June 2018 - 04:56 AM

Beautiful restauration. I especially like the tripod legs, both the mahogany and the slim triangular shape. That looks really good!



#9 Stew44

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Posted 11 June 2018 - 11:59 AM

Very nice indeed! Could we get a picture of the lens through the dew shield?

#10 Steve Allison

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Posted 11 June 2018 - 12:33 PM

Elegant and beautiful. And it's a Goto! You know guys and gals, it doesn't get any better than this...

 

I would keep it in my living room and just look at it.

 

Steve



#11 Chuck Hards

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Posted 11 June 2018 - 02:02 PM

Luck of the draw.  So it goes.



#12 Terra Nova

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Posted 11 June 2018 - 02:11 PM

It is a beautiful restoration!



#13 Esso2112

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Posted 11 June 2018 - 04:58 PM

It turned out wonderful.  There is just something about the way the Goto's look.  Do you happen to know what brand the tripod base that you used is?



#14 ValtsT

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Posted 11 June 2018 - 10:20 PM

Thank you all for the kind comments.

It has been cloudy and raining here, but I did try it yesterday in daylight.  The FOV is quite small, but the view was very good.  I tried 2 of the EPs, and both had very sharp views of distant tree branches.  I also tried the GOTO image erector lens, and the views remained crisp and right-side-up.  That does make the scope odd looking.

In general, the diameter of the tube is quite oversized for the glass, and gives it a larger-than-life look.

Here are a few more photos.

 

IMG_2402sm.jpg

IMG_2405sm.jpg

IMG_2415sm.jpg

IMG_2416sm.jpg

 


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#15 ValtsT

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Posted 11 June 2018 - 10:24 PM

It turned out wonderful.  There is just something about the way the Goto's look.  Do you happen to know what brand the tripod base that you used is?

The tripod head was from Telescope Warehouse on E-bay for a few dollars - shown here.  Not a bad deal, I'd say. smile.gif

telescope warehouse mount.JPG


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#16 jcruse64

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Posted 11 June 2018 - 10:37 PM

I spy Haint Blue in the background there...

 

Nice work!!!


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#17 ValtsT

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Posted 11 June 2018 - 11:21 PM

I spy Haint Blue in the background there...

 

Nice work!!!

Yep - my next garage sale find project...  Stay tuned.


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#18 Esso2112

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Posted 13 June 2018 - 01:17 PM

The tripod head was from Telescope Warehouse on E-bay for a few dollars - shown here.  Not a bad deal, I'd say. smile.gif

attachicon.gif telescope warehouse mount.JPG

Thank you. One more favor. Could you measure the opening size for me. I will be doing a similar restoration on a Goto Uranus and would like to verify the pillar will fit in the one. Telescope warehouse has a couple still for sale. I know they are cheap, but if the pillar won’t fit I can look elsewhere and save a couple bucks. 

 

Thanks. 



#19 ValtsT

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Posted 13 June 2018 - 08:01 PM

Thank you. One more favor. Could you measure the opening size for me. I will be doing a similar restoration on a Goto Uranus and would like to verify the pillar will fit in the one. Telescope warehouse has a couple still for sale. I know they are cheap, but if the pillar won’t fit I can look elsewhere and save a couple bucks. 

 

Thanks. 

The cheap Meade head has a plastic plug that acts as a bearing, which I have greased.  The plug is slightly tapered and is installed from the bottom. The top diameter is .860" and the bottom is .900".  The metal mount head hole measures about .875".  The plastic plug has a metal insert that is set half-way in.  It has a through-diameter of .375".  I used a 1/4" bolt from the top, and a big washer and security nut on the bottom.  I added some washers to keep my 1/4" bolt stable in the 3/8" hole.

I hope this helps.

IMG_2421.jpg


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#20 Esso2112

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Posted 13 June 2018 - 08:12 PM

Perfect. Thank you. 



#21 Stew44

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Posted 05 March 2019 - 08:59 AM

Greetings,

 

Any ideas as to the date of manufacture?

 

Valts

attachicon.gif goto label.jpg

attachicon.gif goto open box.jpg

 

Just to close a loop on date here the case label is a corporate GOTo label and those started in 1955.  Final year of production was 1959.  So that's the date range for this scope - 1955-1959.  You were fortunate to have the upper portion of the mount.  Walter_A's scope was OTA only from what we've seen.  There does appear to be a difference in your lens cell and the one he just posted.  That will take some sorting out.


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