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Celestron C90 Registry

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102 replies to this topic

#51 jstrandberg

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Posted 06 July 2019 - 03:28 PM

My

 

Thanks to jstrandberg for the details of your C90 f/5.6 Telephoto - that's the second f/5.6 for the C90 Registry which is now at version 3.1.

 

Please post some pictures of the lens and case if you have them.

Pic of my S/N 500467

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#52 jstrandberg

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Posted 06 July 2019 - 03:34 PM

Got another for your registry. Don Rothman, who runs ASTRO PARTS OUTLET USED TELESCOPES has S/N 500731. He helped me with an original T-adapter for mine so I could use it for astrophotography.

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#53 DreamWeaver

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Posted 22 July 2019 - 04:10 PM

Here's another addition for the registry.  S/N 907384.  Picked up a like-new C90 spotting scope on the local Craigslist.  I tried resisting since I already have an Astro version, but as we all know, that is futile!  borg.gif   Looks like I got lucky as it included the seemingly rare Celestron lens cap/dew shield.  The finder scope is the only part that shows any wear and tear, thanks the the set screws.  I'm going to guess that it's from ~1981 going by the catalog and price sheet that came with it.  It also has a tiny little screw driver for adjusting the finder scope.  Don't know if that was something that Celestron included with these scopes.  And not one missing lens cap.  It came with the plastic storage case.

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#54 RyanSem

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Posted 22 July 2019 - 07:53 PM

Here's another addition for the registry.  S/N 907384.  Picked up a like-new C90 spotting scope on the local Craigslist.  I tried resisting since I already have an Astro version, but as we all know, that is futile!  borg.gif   Looks like I got lucky as it included the seemingly rare Celestron lens cap/dew shield.  The finder scope is the only part that shows any wear and tear, thanks the the set screws.  I'm going to guess that it's from ~1981 going by the catalog and price sheet that came with it.  It also has a tiny little screw driver for adjusting the finder scope.  Don't know if that was something that Celestron included with these scopes.  And not one missing lens cap.  It came with the plastic storage case.

Love the dew shield!


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#55 winglift

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Posted 13 August 2019 - 06:46 PM

I just stumbled on this topic. This was my only telescope for many years, actually decades. I even took it with me backpacking in the Sierras including Yosemite.

 

It included the small black covered box, barlow (extender), 18mm eyepiece, and diagonal. I did not know about the number on the lens, had to flip and reverse the photo to read the number easier.

 

Information is in photos.

 

I'm not sure where mine falls into the date manufactured, but I bought it from a family member in the late 70s early 80s.

 

Thanks to this topic I need to clean the optics and need to find a new o-ring for the finder. Also, I have the manual somewhere in a box and need to reunite it with the box. I believe that I took it out to avoid messing it up. I hope that I can find it.

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#56 W6IBN

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Posted 18 August 2019 - 11:26 PM

I have S/N 917094. Best I can tell optic # is 6089, but it is hand etched and the last number is a little uncertain, might be a 7. It's one of the original orange tube, short barrel with the black notched focusing ring. My dad bought it some time in the eighties, and now I have it. He left it to me with an unmarked porro prism, a Celestron star diagonal, a Celestron 25mm Kellner, and another unmarked shorter objective. I have the original objective cap, and the solar filter.  it has the 1/4 20 tripod mount, but not the finder scope or finder scope mount. I don't recall ever seeing those growing up. When I got it, it was completely dried out and trying to focus it, it would slip and wiggle. I decided to take it apart, and based on a couple web articles, cleaned up the threads and re-lubricated them with moly grease. Works so much better now. Just tonight got a really good look at Jupiter and Saturn. With the shorter objective I can see cloud bands and the great red spot on Jupiter. I'm just getting back to the hobby after many years away. While I have my sights on a bigger scope, I'll be keeping this one for camping trips and such. 


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#57 rolo

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Posted 20 August 2019 - 06:49 AM

92155

 

 

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#58 Dave Chapman

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Posted 27 September 2019 - 01:09 PM

Here are the images for my Celestron C90 Astro (orange tube) bought in Canada around 1983. Optics # is 4073.

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#59 FearL0rd

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Posted 13 November 2019 - 07:20 PM

Just bought this from goodwill and it looks perfect. S/N: 916974

 

Whats-App-Image-2019-11-13-at-6-19-09-PM Whats-App-Image-2019-11-13-at-6-19-09-PM Whats-App-Image-2019-11-13-at-6-19-09-PM


Edited by FearL0rd, 13 November 2019 - 07:21 PM.

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#60 RyanSem

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Posted 13 November 2019 - 08:28 PM

Just bought this from goodwill and it looks perfect. S/N: 916974

 

Whats-App-Image-2019-11-13-at-6-19-09-PM Whats-App-Image-2019-11-13-at-6-19-09-PM Whats-App-Image-2019-11-13-at-6-19-09-PM

Great find! How much did it go for?



#61 FearL0rd

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Posted 13 November 2019 - 08:31 PM

Great find! How much did it go for?

$70 it also came with a luggage for the eyepieces cf047ac120a501413a610fdaf98f535b.jpg

Sent from my SM-G975U using Tapatalk
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#62 Uranotopia

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Posted 17 November 2019 - 02:55 PM

I just stumbled on this topic. This was my only telescope for many years, actually decades. I even took it with me backpacking in the Sierras including Yosemite.

 

It included the small black covered box, barlow (extender), 18mm eyepiece, and diagonal. I did not know about the number on the lens, had to flip and reverse the photo to read the number easier.

 

Information is in photos.

 

I'm not sure where mine falls into the date manufactured, but I bought it from a family member in the late 70s early 80s.

 

Thanks to this topic I need to clean the optics and need to find a new o-ring for the finder. Also, I have the manual somewhere in a box and need to reunite it with the box. I believe that I took it out to avoid messing it up. I hope that I can find it.

Great!!!

Such an really older C90, very impressing!

Thx for showing these pictures!

 

And, please, write about your impressions when using it for astronomy!

 

Carsten



#63 Masvingo

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Posted 24 November 2019 - 10:29 AM

I’ve updated the C90 Registry which is now at Edition 4.
 
Thanks to DreamWeaver, jstrandberg, winglift, W6IBN, rolo, Dave Chapman and FearL0rd for your contributions – there are some nice C90s there.
 
As ever, all contributions, clarifications and corrections gratefully received and remember – we love pictures too (and they help to detail the smaller changes over the years.)


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#64 Dave Chapman

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Posted 24 November 2019 - 12:24 PM

I’ve updated the C90 Registry which is now at Edition 4.

Thanks for including my data; however, that link takes me to edition 3.1 :)



#65 Masvingo

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Posted 24 November 2019 - 01:56 PM

Hi Dave

 

That's odd.  Have you tried refreshing your browser cache? I've checked the link and it works fine for me (desktop, tablet and phone) and I've also checked that edition 4 is the one uploaded to my site.

 

James

 

 



#66 Dave Chapman

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Posted 24 November 2019 - 02:27 PM

Hi Dave

 

That's odd.  Have you tried refreshing your browser cache? I've checked the link and it works fine for me (desktop, tablet and phone) and I've also checked that edition 4 is the one uploaded to my site.

 

James

Yes that was it. Darn browser!



#67 Masvingo

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Posted 24 November 2019 - 04:28 PM

Great, glad it is sorted.  Yes, I've wasted a lot of time wondering why my FTP program is not uploading files to my site and reloading the file only to eventually realise that the files have been uploaded and it is just the browser cache that keeps on showing the old file to me!


Edited by Masvingo, 25 November 2019 - 02:31 PM.


#68 Terra Nova

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Posted 25 November 2019 - 02:02 PM

Hi James, again, please except my most humble apologies but I no longer have #9429. I sold it earlier this year.
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#69 Masvingo

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Posted 25 November 2019 - 02:45 PM

Hi James, again, please except my most humble apologies but I no longer have #9429. I sold it earlier this year.

No worries Terra, sounds like you having an orange clear-out!

 

As mentioned on the C5 thread, I changed the name column a while ago to show the source of the information rather than the owner (although quite often they are the one and same) partly to account for sales and also for the fact that some CN submissions are by people who know of the scope but do not own the scope, eg serials belonging to club instruments reported by club members.  I think it is good to record some indication of the source of the information though.


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#70 Terra Nova

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Posted 25 November 2019 - 03:30 PM

Sorry James. I should have read that and did not. A thousand pardons Sir. ;)

 

Yep, I’ve really thinned the herd. As far as Orange,  I’m down to just my 1977 C8 which I plan on keeping for the foreseeable future.


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#71 Masvingo

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Posted 25 November 2019 - 03:43 PM

No need to apologise, Terra, and I'm glad you still have some orange, and some other telescopes - I've been catching up on some of the back posts and am still in a state of shock about Tom's post! 


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#72 Masvingo

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Posted 01 December 2019 - 02:32 PM

I've bumped the C90 Registry up to Edition 4.1 to include a C90 Spotter (serial 908954, orange tube, black finder eyepiece and wooden case) that I saw on Ebay whilst looking at the C8 ad that Neil (apfever) mentioned on the C8 Registry thread.


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#73 Uranotopia

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Posted 14 December 2019 - 05:22 PM

Great work,

I like to read the registry again and again.

Thank you so much!


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#74 rgreenberg2000

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Posted 23 December 2019 - 10:38 AM

Howdy folks!  I got my first telescope back in 2012, which is when I registered here.......have been in/out of the hobby since then, and recently back in, and discovered I still had my Craigslist C90 that I bought 7 years ago.  I'll be more active here this time around (CPC800 now), and wanted to add my C90 information to this registry!

 

C90 Spotter (Orange tube)

SN#: 99409

Optics#: 7182

18mm eyepiece

5x24mm finder

2.5x barlow

extender

original case

 

Some photos:

 

49263933838_e4e5dd7a93_w.jpg

 

49264590672_a5c67ba617_w.jpg

 

49264399111_7c9586ae3f_w.jpg

 

49263933353_b6dc41babd_w.jpg

 

49264590347_ca37786476_w.jpg

 

Thanks for building this registry!!

 

Rich


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#75 Masvingo

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Posted 24 December 2019 - 09:43 AM

Many thanks, Rich, for posting the details of your 'scope.  I've added it to the C90 Registry which is now at Edition 4.2.

 

Can you see a maker's mark on the finder scope?  Around that era it was usually a dash '-' in a circle but some had a 'T' in a circle and some an 'M' in a circle.




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