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Celestron C5 Registry

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149 replies to this topic

#1 Masvingo

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Posted 19 February 2015 - 04:14 PM

Well, I guess it had to happen sooner or later, particularly as I have a C5 (a 1981 model as far as I can tell) so here we go with the Celestron C5 Registry.

 

I've seen mention on the web that C8s were built at 3 or 5 times the rate of the C5 and certainly, C5 numbers have been a lot harder to come by than C8 numbers.

 

The general pattern seems to follow what one would expect from C8 numbers with the following sequences:

 

  • very early tri-colour C5s have just a unit number, xx or xxx, eg 466 which was ordered in January 1972 but only delivered in October 1972 but was presumably given a serial number at order time or shortly thereafter
  • by the second quarter of 1972, the C5 (still tri-colour) had moved onto the QxxxY and then QxxxxY scheme where Q = the quarter and Y the last digit of the year, eg 2 182 2 (made in the 2nd quarter of 1972) – this scheme appears to have continued up to the 1st quarter of 1978, eg 1 3658 8 which has motors dated 11/77
  • then there seems to be an interim scheme of numbers used for the rest of 1978 and early 1979 – I can't tell yet, due to lack of numbers, whether these take the form of QxxxY or xxxxY, eg 4190 8
  • then at some stage in 1979 Celestron changed to a non-date sequential unit scheme of the form 5xxxxx, eg 501610 with motors dated 04/80 and my scope 502612 with motors dated 4/81

However, unlike the C8s which kept the last scheme going from 8xxxxx into 9xxxxx, the C5s saw another change to a 5xxxx (one digit less) – I'm guessing (due to lack of numbers at the moment) that the 6digit 5xxxxx scheme kept going until the original C5 was withdrawn in 1986 (this was apparently to allow Celestron to boost C8 production at the time of growing Halley mania) and that when the C5 was reintroduced in December 1992 they started to use the 5 digit 5xxxx scheme eg 52126 for a white OTA advertised on Astromart and 53087 for a white C5+ in the CN classifieds, 54296 for a G5 reported to have been sold in July 1999, 58705 for a white spotter (also reported sold in 1999), etc.

 

However, the f6 telephoto lens version (with a black ota) seems to throw a bit of a spanner in the works, there was one advertised on Astromart with serial 4 059 5 (which compared with the normal f10 scopes of the era with numbers like 21436 5, 3 1506 5 and 1 1799 6 suggests that a different unit number sequence was used.  Another (f10) ota, which may have been a spotter has number 4 350 9 and I originally thought that the 4 xxx Y was always indicative of the telephoto lens / spotter but I'm not sure now, as we also have 4 190 8 which appears to be a normal die cast orange tube C5. 

 

Any thoughts? :confused:

 

As ever, any further contributions, clarifications and corrections gratefully received.  If known, it would be good to have the corrector number and any date on the motors and the original purchase date if known.  Also, for the early numbers (ie prior to the change to the 5xxxxx sequence) please also give any spaces that appear in the serial number sequence if not obvious from a photo. 

 

A link to the registry is here >  Celestron C5 Registry

 

James


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#2 Jaimo!

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Posted 19 February 2015 - 07:49 PM

Count me it!

 

21436 5

 

Tag Small.jpg

 

 

Overview Small.jpg

 

 

Jaimo!


Edited by Jaimo!, 03 October 2017 - 06:48 PM.

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#3 A6Q6

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Posted 19 February 2015 - 08:16 PM

Well, I guess it had to happen sooner or later, particularly as I have a C5 (a 1981 model as far as I can tell) so here we go with the Celestron C5 Registry.

 

Thanks James, I feel my life is now complete. :thankyou:



#4 Geo31

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Posted 19 February 2015 - 09:45 PM

I'll play....

 

OT, pebble finish, die cast C5.  C/N 502254

 

I've rotated the corrector since this pic was taken.....

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Edited by Geo31, 19 February 2015 - 09:46 PM.


#5 Masvingo

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Posted 20 February 2015 - 04:01 PM

Thanks all.   :waytogo:

 

I find my C5 very enjoyable, small and light enough to make it easy to set up even when tired but with a reasonable light grasp - sometimes I'm just too tired to face the thought of lugging the D8 out and it's easier to find some excuse not to go out.


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#6 Erik Bakker

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Posted 21 February 2015 - 07:39 AM

My C5 has SN 503352 with 220V 50Hz motors dated 12/82.

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  • C5 tabletop.jpeg

Edited by Erik Bakker, 23 February 2015 - 03:35 AM.


#7 Jeff Lee

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Posted 21 February 2015 - 06:29 PM

Well, here is mine with the label showing. I'm wondering if this was once on a mount? I have the original finder, but since I use this scope I put a 6 x 30 LER on it.

 

Serial No: 43509 (looking now it could be 4350 9), has the crinkle orange finish and the bottom camera mount/base which I use a vixen short rail on to mount it.

 

0f460d926f55aed42fec072c1d15b173.jpg

 

345bed0d3e284bb1599bbb4976e780d1.jpg


Edited by Jeff Lee, 21 February 2015 - 06:57 PM.


#8 paul

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Posted 21 February 2015 - 09:25 PM

Awesome!!

500895 .. late 79    motors 11-79

c5.jpg


Edited by paul, 22 February 2015 - 08:11 PM.


#9 Masvingo

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Posted 23 February 2015 - 03:25 AM

Thanks Erik and Paul.  

 

Erik, do you know the original sales date for your C5 as It seems to be near the start of the 5 digit 5xxxx sequence which took over from the 6 digit 5xxxxx series?

 

James



#10 Masvingo

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Posted 23 February 2015 - 03:31 AM

Hi Jeff, thanks for the pictures.  I don't think your C5 originally came with a mount, or if it did, when some one de-forked it they took great care to remove the serial number plate from the mount and put it on the tube.

 

My understanding is that, generally, until the 6digit non-date serial numbers came in (5xxxxx for the C5 and 8xxxxx for the C8) and the serial number moved up to a space on the secondary holder in the corrector plate, the C5s and C8s had their serial number on a plate with the model names. etc that was mounted on the side of the circular base.  It was only those ones sold as OTAs that had the plate on the tube.

 

James



#11 Erik Bakker

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Posted 23 February 2015 - 03:37 AM

Don't know the original sales date James. But just noticed that 1 number in my SN was missing. I have edited my original post to correct that. SN is 503352. It has the Special Coating on the corrector. Both corrector and mirrors look absolutely pristine, like factory fresh. This scope ages very well  :)

Here are a few more pictures of my C5, or should we call it a Super C5  :hmm:

 

C5 EB w:fork .jpeg C5 EB SN Bob's knobs .jpeg C5 EB Special Coating .jpeg


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#12 Erik Bakker

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Posted 23 February 2015 - 01:00 PM

Looking at the pictures in this thread, I noticed that the screws that attach my corrector cell to the ota have Allen (hex) key screws. And so do all other screws used on my C5. Looks very nice. At the time this C5 was sold new, they charged DFL 3,995.- for it, the equivalent of € 1,815 or currently US$ 2,035.-. Serious money then and now. But it somehow feels worth it. It has no perceptible mirror-shift either and works wonderfully for all sorts of observing.



#13 A6Q6

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Posted 23 February 2015 - 02:04 PM

Looking at the pictures in this thread, I noticed that the screws that attach my corrector cell to the ota have Allen (hex) key screws. And so do all other screws used on my C5. Looks very nice. At the time this C5 was sold new, they charged DFL 3,995.- for it, the equivalent of € 1,815 or currently US$ 2,035.-. Serious money then and now. But it somehow feels worth it. It has no perceptible mirror-shift either and works wonderfully for all sorts of observing.

I also noticed the consistent use Allen key screws, it really adds to a top quality look, a step above the usual stuff. :waytogo:



#14 Erik Bakker

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Posted 26 February 2015 - 03:59 PM

Hi James,

 

Any update planned soon for the C5 registry?



#15 Masvingo

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Posted 27 February 2015 - 08:25 AM

Hi Eric

 

Hopefully, between all the house decorating, I'll get a chance to update it over the weekend.

 

James



#16 Erik Bakker

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Posted 27 February 2015 - 10:27 AM

Good luck with the decorating stuff!



#17 bob midiri

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Posted 27 February 2015 - 12:40 PM

James here is my addition to the C5 registry. Its an orange pebble surface OTA.

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#18 Erik Bakker

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Posted 27 February 2015 - 01:41 PM

Hi Bob, looking good!

 

Is your orange pebble C5 502716 from 1982? What is the date on the motors?



#19 bob midiri

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Posted 27 February 2015 - 01:51 PM

Erik it was just the OTA, came with a guide scope mount, had it on my C14..but it was orignally with a C11 package from about the early 1980's when the C11's first came out



#20 Masvingo

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Posted 27 February 2015 - 02:03 PM

I'm guessing 1981 as mine (502612) is just over 100 units away and I think mine is a 1981 model, the motors are dated 4/81 and whilst there was no sales invoice with the papers that came with it, there was a leaflet from Astro Systems of Luton, titled "Why Buy Celestron from us" that is dated May 1981.

Incidentally, my one has the same cross-head screws retaining the corrector that Bob's does.

#21 bob midiri

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Posted 27 February 2015 - 02:28 PM

C5 and guide mount

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#22 bob midiri

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Posted 27 February 2015 - 02:30 PM

the guide mount

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Edited by bob midiri, 27 February 2015 - 02:33 PM.

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#23 Erik Bakker

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Posted 27 February 2015 - 02:40 PM

Very nice stuff Bob.

 

I have the same mirror diagonal you have, but also a Celestron prism diagonal "made in Japan".

That tangential guide mount looks wonderful. Wish we could all buy this stuff new.



#24 eolian

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Posted 02 March 2015 - 12:44 PM

Mine is  500794   orange pebble finish , It has the strange oval 3 plug cord that plugs into the bottom.

 

Where is the motor date located and i will try to see if i can read it. Is it like a month - year?  "11-79" I have kind of a rough oxidation in my motors but i think i see "11-79 on the side of the housing.

 

This is one of the best performing scopes i have ever had. It was gassed up inside and i had to clean and do a minor collimation but this is one sweet little cat.

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#25 Masvingo

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Posted 02 March 2015 - 01:09 PM

Thanks eolian, that sounds like it,  it's usually in the form MM YY and part of a long string of characters around the side of the motor but up towards the top so quite difficult to see with the motors in place. 

 

If the C5s followed the same numbering system of the C8 then the 5xxxxx series of numbers came in some time in 1979 and allowing for a couple of months delay for the motors sitting on a shelf at either the supplier or Celestron would suggest that your scope was produced early 1980.




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