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1973 Orange Sandcast C8

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#26 CHASLX200

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Posted 20 October 2018 - 08:39 AM

I was just about to say the same thing. He may have an absolute Gem with that serial number since it's very likely that Goff did the secondary and corrector. I was informed by Celestron that Goff did my scope after sending the serial number to the right person. Bob Goff was Carl Zambuto's mentor. Mine is the best SCT I've ever looked through ever in fact Kevin at SkyWatcher stopped by to see Jupiter through it on his way through town and said.... what the heck is this! The optics are absolutely tack razor sharp. Jupiter snaps into focus with amazing surface detail with world class contrast. I guarantee this will stand up to the best 8" Maks or Mewlon's costing several thousand dollars in fact I wouldn't take $3000 for this SCT. What would I replace it with? One thing I learned in this life is when you find something this good, you don't ever let it go unless you absolutely have to. So far, I've not made those mistakes.  BTW, no fancy HD optics or XLT coatings. Bring it!

Maybe you got that freaky sharp 1984 black C8 i had.



#27 rolo

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Posted 20 October 2018 - 09:10 AM

Maybe you got that freaky sharp 1984 black C8 i had.

You be hittin the sauce?belushi.gif


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#28 Daniel Mounsey

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Posted 21 October 2018 - 08:11 PM

Maybe you got that freaky sharp 1984 black C8 i had.

No, mine is 1973


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#29 CHASLX200

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Posted 22 October 2018 - 05:20 AM

No, mine is 1973

Back when the Master blank was fresh.


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#30 bremms

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Posted 22 October 2018 - 07:16 AM

Back when the Master blank was fresh.

We were all fresher back in 73'


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#31 rolo

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Posted 25 October 2018 - 12:33 AM

My 1973 C8....Should have kept this one!

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#32 Magnus Ahrling

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Posted 25 October 2018 - 05:42 PM

Hello and thanks for your pictures of the 1973 C8 you used to own. Looks like a usefull handle on the fork.waytogo.gif  Did you mount it? I have never seen such a thing on a classic C8. What finder is it you have? I have also replaced the original orange 6X30 finder on my 1973 C8 to a  6X30 Synta. In my opinion the original finder had an uncomfortable  narrow field of view. Synta much better in that respect. Of course I still have the original finder. I also notice your focuserknob looks different than mine. Mine is sort of much shorter and "fatter". Maybe 1973 C8:s had different focuserknobs?

 

Regards,

Magnus



#33 rolo

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Posted 25 October 2018 - 11:37 PM

Magnus, its a newer 6x30 LER finder by Celestron. 



#34 starman876

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Posted 26 October 2018 - 01:14 PM

Here's one...C9.25

That is a great test report. That should be an excellent scope


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#35 Magnus Ahrling

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Posted 27 October 2018 - 06:19 PM

I find this short review of the 1973 C8 quite intressting https://www.youtube....Q8STRcIwI&t=52s

According to the serial# mine is also a 3 rd quarter 1973 C8waytogo.gif

 

Regards,

Magnus


Edited by Magnus Ahrling, 27 October 2018 - 06:23 PM.

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#36 Augustus

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Posted 27 October 2018 - 06:39 PM

Just an update: If you're wondering why the scope is missing from my signature, it's because I no longer have it.

 

No, I did not sell it. It's with my girlfriend and will be for the foreseeable future until either a) it has to go back in December or b) I don't have to return the scope and can get my hands on the 2080, in which case she'll get the 2080 (the adjustable tripod and drive corrector will lend themselves nicely, and I think it might take DC power). I love this scope but I would rather it get used, and at the moment she's using it more than I would be. Also, I need space in my living room until the 20" parts can get out of the way and some stuff gets sold......

 

If I do get to keep this scope long-term, I know there's an original Celestron wedge sitting next to the 2080's storage trunk and I can buy a triangle tripod.

 

Look for some observing reports (not by me) in the "what did you observe with your classic telescope today" thread in the near future. Her last scope was junk mechanically and optically, so this is a nice upgrade.

 

I find this short review of the 1973 C8 quite intressting https://www.youtube....Q8STRcIwI&t=52s

According to the serial# mine is also a 3 rd quarter 1973 C8waytogo.gif

 

Regards,

Magnus

That voice sounds like Daniel Mounsey.


Edited by Augustus, 27 October 2018 - 06:58 PM.

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#37 Magnus Ahrling

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Posted 27 October 2018 - 07:24 PM

Thanks for feedback Augustus.smile.gif I will try to follow "what did you observe with your classic telescope today". I have never followed that thread before!

 

Regards,

Magnus



#38 Daniel Mounsey

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Posted 28 October 2018 - 09:17 AM

Correct, I did that video. 


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#39 John Boudreau

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Posted 28 October 2018 - 11:39 AM

Robert Goff had left Celestron for Criterion sometime in 1973. Criterion and Goff were plaintiffs in a case Celestron filed claiming patent infringement upon the method of SCT corrector plate manufacture invented by Celestron's owner Tom Johnson. Although having used the method since perhaps 1964 or earlier, Johnson didn't bother to file a patent on the method until Sept 4, 1973 shortly after Goff had left Celestron.

 

https://law.justia.c...61/603/2266137/

 

So there are indeed Celestrons that were made at least through part of 1973 that Goff may have worked on. But he certainly wasn't the only optician there up to that point.

 

I bought a C8 back in the late Summer of 1973, which I sold about 20 years ago. I've owned and used other SCT's since, and my '73 C8 was certainly a very good one. Wish I still had it!


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#40 Augustus

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Posted 05 November 2018 - 08:08 AM

Here it is at its new home with a Telrad and 2" diagonal added:

 

c8atnewhome.sjpg.jpg


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#41 Magnus Ahrling

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Posted 05 November 2018 - 07:00 PM

Beutiful among the autumn leafssmile.gif I hope it will see a lot of starlights. It`s certainly worth it!

 

Best Regards,

Magnus


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#42 orion61

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Posted 07 November 2018 - 12:06 AM

You might as well forget about opening the power cord bag. That cord will be as hard as a rock and will crumble at the least pressure to "unwrap" it. It is best to leave the cord in the bag and build your own power cord. being A/C it won't really make a difference on the cords which wire to the plug. I have rebuilt mine using a grounded 3 wire cord.

There are hardly any of those old cords left in the bag so keep it that way is my advice. the plug is easily sourced. You have yourself a real beauty there!!

Good luck.

PS: Any chance the club would sell it to you? That tube would have come with the Silver triangle non adjustable tripod and classic wedge.

Duane



#43 Augustus

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Posted 10 November 2018 - 09:23 AM

You might as well forget about opening the power cord bag. That cord will be as hard as a rock and will crumble at the least pressure to "unwrap" it. It is best to leave the cord in the bag and build your own power cord. being A/C it won't really make a difference on the cords which wire to the plug. I have rebuilt mine using a grounded 3 wire cord.

There are hardly any of those old cords left in the bag so keep it that way is my advice. the plug is easily sourced. You have yourself a real beauty there!!

Good luck.

PS: Any chance the club would sell it to you? That tube would have come with the Silver triangle non adjustable tripod and classic wedge.

Duane

The power cord works fine and is in great shape.

 

I found a wedge but no tripod when I got it.

 

Club will probably either sell it or give it to me (along with the 2080), will find out in December.



#44 Fomalhaut

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Posted 10 November 2018 - 01:24 PM

My 1973 C8....Should have kept this one!


Me too...! blush.gif


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