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Celestron C8 Registry

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#1101 tim53

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Posted 23 September 2021 - 12:21 PM

Apologies - not only am I somewhat delinquent in updating the Registry document (notifications of updates are posted here) but the machine which serves them is temporarily down. It may be out a few days, as I am taking the opportunity of the downtime to provision a new one. 

 

 

My wife saw the controversy of the "B v 8" and instead chose to focus on "TINKY" - wondering if it was a nickname, acronym, anagram, or perhaps a literary reference.

 

At least 1976 reduces the timeframe of the search. The scope was clearly in existence by that date, and in the hands of some owner. I have been trying to think of what use a C8 could have in a radio station. Calling sporting events immediately comes to mind because I worked as a broadcast engineer in those days and we Broadcast Football and Basketball games as "Live Remotes" with a great deal of promotion and fanfare. Though, TV would seem a better fit than Radio - for a C8. Antenna maintenance and inspection is perhaps a less glamorous purpose, or even "FCC Antenna Proofs" - a process of taking signal strength readings while driving around the countryside in which a C8 could be helpful in verifying line-of-sight to the transmitting tower. (not that I ever did it that way...) 

 

One must take care when interpreting call signs - the FCC re-uses and reassigns them so the KBEW of today may have no real relation to the KBEW of 1976, which goes for K8EW as well. A key question is always "Who had it on a particular date?" Talking to a re-assignee would be of limited value unless they happen to know something of a previous holder's period.

 

For example - I was dismayed to discover the callsign of my childhood HAM-operator-neighbor had been reassigned after his death before I could obtain it . Many hours were spent looking over his shoulder in his transmitting shack. Bob (W2AI) was into all sorts of things, including SSTV - an elite hobby in 1960s. The experience is probably responsible for my electronics career. Point is - today there is nearly no online memory of his time even though he held that callsign (from the 1940's?) to his death in 1980. It is currently on at least it's second reassignment since Bob.

But I digress -

 

Perhaps another avenue of inquiry is to research individuals with a recollection of Blue Earth Minn. in 1976-ish and get their recollections of KBEW activities.

 

It seems doubtful that an ordinary citizen-astronomer would dedicate their instrument to a Radio Station without more than fandom as a motive.

 

Still, since we have positively identified more than one example of these Axial-Std focus examples, and that leads us to believe there may be as many as 60 or more of them, a more salient question for the registry is the precise serial numbers of the various transition stages. If there is a re-converted (STD to Axial) example it would most likely be in the "Adapted" group prior to 396mm OTA.

 

Archeology was my alternate career choice after Electronics, as you may surmise. Is Astro-Archeology a thing?

Same thing happens with license plates on old cars.  I've been looking off and on for vintage commercial plates for my 1931 Model A Panel Delivery.  they're pretty rare.  In those days, there were SC and PC commercial plate designations.  SC stood for "Solid Commercial" and PC stood for "Pneumatic Commercial".  The distinction was needed because trucks with solid rubber tires were still on the road at the time (and presumably needed to be charged more, since a heavy truck with solid tires might do more damage to pavement than one with pneumatic tires).  But I digress.  The point is that old license numbers can be reassigned, so simply buying a set of old plates wouldn't guarantee one could register them (many states allow year-of-issue plates to be used on vintage vehicles).  And in the case of the Model A, if it costs me 500 smackers for a set of plates, I'd better be sure that I can register them.

 

Another relevant sidebar story about the panel truck.  It came with an old magazine photo (probably a restorer's magazine from the 70s, when the truck was restored) that showed 4 panel trucks in front of a bakery in Bellingham, WA (I bought the truck from a seller in Tacoma).  I searched, and found the son of the owner of the bakery after the company shown on the sign, and he did some research for me.  He tried to find the Bakery's name as the buyer at a local ford dealer that had been in existence since the teens, but was unsuccessful.  It occurred to me that the dealer's records might not have the buyer's names, but the VINs.  Then it further occured to me that the 4 trucks in the photo might have been leased instead of purchased.  I've not had the opportunity to search further.  I also tried the WA DMV.  Absolutely no help there, as they won't give out previous owner information (and probably don't keep it for 90 year old vehicles anyway).

 

Oh, and astro archaeology is a thing.  Where I'm coming from - searching for old hardware from Earth on the moon and Mars is astro archaeology.



#1102 Kasmos

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Posted 24 September 2021 - 03:54 PM

Not really, but I was able to enlarge and sharpen it a bit.  I'm pretty sure it's KBEW.

 

I probably kept the label, and will have to hunt it down.

I did a search and believe that KBEW TINKY was the name given to a Comet discovered in 1976

 

Tinky-KBEW!-CN.jpg


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#1103 Steve_M_M

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Posted 24 September 2021 - 05:16 PM

Someone asked about leveling the Celestron locked tripod.  Here is what was used back in the day.  I think these are solid brass and they slip over the existing tripod feet.  They all have helical adjustment. 

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Edited by Steve_M_M, 24 September 2021 - 09:05 PM.

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#1104 RSX11M+

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Posted 25 September 2021 - 09:24 AM

I did a search and believe that KBEW TINKY was the name given to a Comet discovered in 1976

 

attachicon.gifTinky-KBEW!-CN.jpg

This citation will not be noted in the registry.


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#1105 skintigh

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Posted 27 September 2021 - 05:42 PM

I have a black C8 (SPC8?)

OTA # 842136

Optical Serial Number: 7208

Wooden tripod made in Japan, as are the eye pieces

It's packed with a sky event guide for October 1985 through May 1986, so presumably purchased during or before than range.

 


Edited by skintigh, 27 September 2021 - 05:59 PM.


#1106 skintigh

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Posted 27 September 2021 - 06:34 PM

Others I saw while researching.

 

 

SP-C8 #820965 https://astromart.co...celestron-sp-c8

 

 

SP-C8 841533 (and also 289102 ?)

 

SP-C8 825194

 

https://www.cloudyni...tron-sp-c8-sns/



#1107 DennyD

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Posted 10 October 2021 - 06:10 PM

I have a Celestron C8 Powerstar PEC, serial number 869432.

#1108 Shivertown1

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Posted 10 October 2021 - 10:31 PM

I finally got to pick up the C8, no date on the motors, Serial # is 360056


Edited by Shivertown1, 10 October 2021 - 10:38 PM.


#1109 NTX88

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Posted 03 November 2021 - 05:57 PM

I purchased a orange tube C-8 back in 1988, been stored away in the garage since about 1989.

Serial  # 41636 3  has the fixed metal tri-pod and standard wedge. I think it's all original and in pretty

good shape as far as I can tell except the end glass (corrector plate?) looks like it has dried dew on the inside.

I was told when I got it to leave it alone, that it didn't make any difference...???

the brass colored motors work ok, (couldn't see dates) but the electric cord is somewhat deteriorated.

the only thing that's weird is that the C-8 manual I got with it was printed in 1988.... 



#1110 katwrench

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Posted 14 November 2021 - 11:16 PM

Hi, everyone.. 

I rescued this late orange tube C-8 from a widow back in January. The mirrors were corroded so I sent them to Spectrum, and they did an incredible job recoating them with enhanced EAL. 

She has the byers gears, and tracks beautifully. 

The old girl cleaned up pretty alright, but I'm still looking for one of the tube tripod clamps, which was broken when I acquired her. 

 

Serial 822420

 

 

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#1111 RSX11M+

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Posted 15 November 2021 - 12:27 AM

Hi, everyone.. 

I rescued this late orange tube C-8 from a widow back in January. The mirrors were corroded so I sent them to Spectrum, and they did an incredible job recoating them with enhanced EAL. 

She has the byers gears, and tracks beautifully. 

The old girl cleaned up pretty alright, but I'm still looking for one of the tube tripod clamps, which was broken when I acquired her. 

 

Serial 822420

Your scope dates to Q1-1984 manufacture. Motors should roughly agree with that date.

 

Condition appears very good (now) and well used. I am very curious to hear more about the mirror condition and cause. We don't often hear that with these.

 

I also would like to compliment you on your scope's BMW accessories. wink.gif

 

It's always great to hear yet another rescue story.

 

Thank you for registering.

 

 

Note: I hope to catchup the published registry in the next two weeks. (there... I set a goal for myself) The host serving those documents has been back up and running for about a month.


Edited by RSX11M+, 15 November 2021 - 12:29 AM.


#1112 CHASLX200

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Posted 15 November 2021 - 07:17 AM

I always thought some black C8's were made in late 83. 



#1113 JstCruzn86

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Posted 15 November 2021 - 10:36 PM

Greetings,

 

800387, not original to me. PO was into astrophotography (as I now am!) based on included accessories. Meade drive corrector 43, with dec motor, tele & t ring related. I've had a blast with it. 

 

No numbers except on the fork arm as shown. Badge on secondary mirror collimation cap seems replaced with a funny flat donut shaped ring. A spacer of sorts?

 

Thank you.

 

 

 

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#1114 RSX11M+

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Posted 16 November 2021 - 01:01 AM

Greetings,

 

800387, not original to me. PO was into astrophotography (as I now am!) based on included accessories. Meade drive corrector 43, with dec motor, tele & t ring related. I've had a blast with it. 

 

No numbers except on the fork arm as shown. Badge on secondary mirror collimation cap seems replaced with a funny flat donut shaped ring. A spacer of sorts?

 

Thank you.

Yours appears to have been a well loved and accessorized instrument. While I cannot identify all it's unique enhancements, they appear to be a mix of vintages.

 

The Secondary holder isn't clear enough for me to be certain, but it may be an early Hyperstar adapter. This would make the secondary removable - once the locking ring is removed. If you supply a clearer closeup of the area we may tell more. A Hyperstar turns the scope into an ~f2 or better camera lens.

 

The tripod has been accessorized also, I'm hoping some one will identify that. 

 

The eyepiece is more modern, the scope is probably of 1979-ish manufacture, and the fine DEC knob is also replaced. It was not previously in the registry, so we can't give much history of it.

 

This serial number range is at the beginning of a revamped production series based upon the previous Diecast era.

 

It appears in excellent condition - thank you for sharing it and for Registering.


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#1115 JstCruzn86

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Posted 16 November 2021 - 01:41 AM

Ah, sorry about the blooper post with no reply above (now removed). Here are close ups of the secondary cap. That donut is magnetic. 

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Edited by JstCruzn86, 16 November 2021 - 01:56 AM.

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#1116 RSX11M+

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Posted 16 November 2021 - 02:02 AM

Ah, sorry about the blooper post with no reply above (now removed). Here are close ups of the secondary cap. That donut is magnetic. 

Ah, that's not what I thought it might be. I am unable to identify it. Is it magnetic?

 

Perhaps it's to hold some other accessory that we haven't seen, in place.

 

Thanks for the closeup.

 

FYI: The serial number tag presently on your fork arm was once on the secondary holder. It was apparently transplanted when the ring was emplaced.


Edited by RSX11M+, 16 November 2021 - 02:04 AM.


#1117 Gary Esterly

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Posted 19 November 2021 - 02:15 PM

Just received this C8 Classic from an Ebay purchase. Still in the process of checking things out. Serial Number is 859190. I will have to wade back through the previous posts to see if I can figure out the date of manufacture.

 

S l1600


#1118 RSX11M+

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Posted 20 November 2021 - 06:38 AM

Just received this C8 Classic from an Ebay purchase. Still in the process of checking things out. Serial Number is 859190. I will have to wade back through the previous posts to see if I can figure out the date of manufacture.

 

We haven't learned how to be accurate about manufacture dates for units in this serial number range as it's not date-coded like earlier serial numbering was. However, based upon reports from owners of nearby numbers, 1989-1990 would be a good bet.

 

 

Your scope was not previously in the registry, so thank you for the submission.


Edited by RSX11M+, 20 November 2021 - 06:46 AM.


#1119 GUS.K

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Posted 20 November 2021 - 07:06 AM

Received this C8 last week, serial number 3130 8. 1978 model? Tripod not original, maybe late 80's early 90's. Clock drive (240 Volts) works fine. More info and pics in this thread here.

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#1120 RSX11M+

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Posted 21 November 2021 - 01:27 AM

Received this C8 last week, serial number 3130 8. 1978 model? Tripod not original, maybe late 80's early 90's. Clock drive (240 Volts) works fine. More info and pics in this thread here.

Yes on all counts.

 

That SN would ordinarily indicate Q3 1978. Motors of similar SNs are typically 10-77, but some are earlier. (perhaps non-110v models)

 

By characteristics, it fits with the post-1976 period: Bi-color paint scheme, 4-screw secondary holder, Diecast forks, 3-prong power chord in the bottom of the base, plastic cover, typical finder.

 

I'm not certain when that tripod / wedge came in, but it was recently suggested to me that it was contemporary with the Ultima series which I think corresponds to the 1990s. Your example looks slightly earlier to me however, so I may not quite have it correctly identified.

 

Photos in your linked thread were instructive. The extras you have there are not typically found any longer - very nice to see. The counter-weights, illuminated eyepiece, Kellners, filters, off-axis guider, and the cast aluminum guide scope piggy-back mount. (can you see my jealousy?) I offer a caution on the diagonal, and suggest you obtain a stronger modern model - perhaps able to accommodate up to 2" optics.

 

I would like to know what reticle the illuminated eyepiece offers, especially if it is etched. If it has anything other than simple cross-hairs I'd appreciate a photo.

 

 

 

We have one example in the registry of an incomplete SN that is close to yours, but other than that your precise number was not previously listed.

 

That's a very nice and unusually complete outfit were it here in the USA.  I have seen that piggy-back mount often on scopes down-under, perhaps more of a necessity in southern skies.

 

Thank you for registering. I love seeing these scopes reach middle age with so much life left in them. Use it well, and please pass it on when the time comes.


Edited by RSX11M+, 21 November 2021 - 01:35 AM.

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#1121 B 26354

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Posted 21 November 2021 - 02:05 AM

The extras you have there are not typically found any longer - very nice to see. The counter-weights, illuminated eyepiece, Kellners, filters, off-axis guider, and the cast aluminum guide scope piggy-back mount.

 

...I have seen that piggy-back mount often on scopes down-under, perhaps more of a necessity in southern skies.

That piggy-back mount utilizes an integrated single 1/4-20 knob-head mounting-bolt, and was designed and sold as a C8 piggy-back camera attachment. I bought one in '79, for my '77 C8, and still have it.

 

Having only a single attachment-point, I don't think that mounting a guide-scope on it would work out very well, at all.

 

grin.gif



#1122 pierce

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Posted 21 November 2021 - 02:26 AM

Ah, that's not what I thought it might be. I am unable to identify it. Is it magnetic?

 

Perhaps it's to hold some other accessory that we haven't seen, in place.

 

Thanks for the closeup.

 

FYI: The serial number tag presently on your fork arm was once on the secondary holder. It was apparently transplanted when the ring was emplaced.

 

FWIW, my first scope was a black tube Celestar 8 of similar vintage (late 80s?) and the dust cap was very loose and fell off really easy, and my various attempts at masking tape shims didn't last long.    that magnet might have been paired with a magnet bonded onto the dust cap to encourage it to stay in place, if so, kudos to whomever came up with that little mod.


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#1123 GUS.K

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Posted 21 November 2021 - 03:14 AM

Here's the illuminated reticule EP and controller. Thanks for the confirmation on the date of manufacture.

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#1124 GUS.K

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Posted 21 November 2021 - 03:54 AM

My aim with this setup is to keep it as original as possible. The scope is in great working order, in the limited time I had to test it out in average to poor seeing, it threw up quite a good image of Jupiter. I also want to try and find a locked triangle tripod (if at all possible) and an original cap, mine has the centre knob/handle missing from it. apart from that, the rest of the scope is in great nik, no scratches or paint chips anywhere on the tube or fork mount. There is some very minor aluminium oxidation on the inside of one of the fork arms but apart from that, it looks like it hasn't been used for a very long time, it did come with the original trunk, which I want to refurbish as well. Saying this, the original prism diagonal is in great condition and compares to my Tak diagonal, but I'd like to keep and use all the original equipment, even the straight through finder. I have added a RDF onto the camera adapter, but have not modified the adapter at all. I had the 1982 Celestron colour catalogue back in the day and always dreamed of owning one of these, and now 40 years later I do. 


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#1125 B 26354

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Posted 21 November 2021 - 11:18 AM

....I also want to try and find a locked triangle tripod (if at all possible) and an original cap, mine has the centre knob/handle missing from it.

In cold weather -- as many others have found -- my '77 C8's dust cap always became very loose. I gave it to a friend a few years ago, and I now use an AstroZap cover... but my cap looked exactly like the one in your other thread's photo... and mine never had a central knob, like some of the later ones did. Perhaps yours never did, either.

 

grin.gif


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