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Cave Mirror Registry

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#901 apfever

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Posted 14 February 2019 - 08:24 PM

185 R  might be a spherical radius. That would be a focal length of 92.5" so perhaps a double check of the numbers.

185 R  might have been a spherical radius REFERENCE before figuring, thus the difference in actual final focal length after figuring.

just a thought.



#902 chill4

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Posted 08 March 2019 - 01:08 PM

Hello,
I just joined this community through the link from cave-astrola.com. Thought I'd register the mirror on my 1974 Model D Transportable.

Mirror size 12.5"
Serial number is M749686
F/6
74 3/16" focal length
Dated Oct 3, 1974
Writing is cursive

 

I took some pictures in 2014 when I had it re-finished. Not very good, but it does validate the mirror. I'll try again next time I have the mirror out. Also attached one of the scope and a perhaps interesting one of initials and date on the worm wheel mount housing. Dated 9-74 on a 10-3-74 scope suggests it's a Cave employee.

 

Thanks for the archive recording.

 

Curt Hill

 

I tried to get my file sizes to total less than 500KB, but not successful. I hope you don't mind 2 added postings

Attached Thumbnails

  • Mirror M749686.jpg

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#903 chill4

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Posted 08 March 2019 - 01:09 PM

Here is the Model D

 

Curt

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  • Model D Transportable.jpg

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#904 chill4

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Posted 08 March 2019 - 01:10 PM

....and the gear inscription

 

Curt

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  • Gear inscription.jpg


#905 PiSigma

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Posted 08 March 2019 - 08:14 PM

Thank you for the addition to the registry and welcome to the Classic Telescope forum Curt. I'll have it added to the next edition which I'll probably post in a month or so.

 

That is the first time I have seen such an engraving on the RA clutch. Some of the details like this that we keep finding as the registry grows are very interesting. I wonder who EFB was?



#906 GTH73

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Posted 15 April 2019 - 09:07 PM

I have two mirrors.   #1 is a 10 inch f/7   M749631  (Block Print Cave Optical Co.) Sept 24 1971

                                 #2 is a 12.5 inch f/6 M727202 (Cursive Cave Optical Co.) Mar. 27 1972

 

I'm working on the pictures

 

 

Greg



#907 PiSigma

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Posted 16 April 2019 - 09:02 PM

Hello Greg and welcome to the Cloudy Nights Classic Telescope forum!

 

Thank you for the two new additions to the registry.

 

Is the date on M749631 actually Sept 24 1974 and not 1971? The 74 after the M indicates it was made in 1974 and the number sequence fits into 1974 also. I just want to confirm.

 

And yes, if you get some pictures that would be great. I like those for my records. Are either of these mirrors in complete telescopes?

 

It has been a few months since my last update. I will get one posted here soon that will include your mirrors.



#908 arachman

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Posted 11 May 2019 - 11:06 AM

Hello,

 

Here is what I believe will be a new mirror for your registry.

 

It is an 8" F7 and I think it is a Lightweight Deluxe.

55 11/16" FL, Serial Number M705303 dated May 20 1970

 

It is the one you might have seen for sale on Astromart with the bumblebee

paint job. I was helping the owner to sell it but everyone making an offer wanted it shipped or delivered and he didn't want to do that. So he offered it to me and I couldn't resist. The nontraditional paint job is unusual but professionally done and beautiful in person.

 

Anyway, photos are attached.

 

Thanks

Attached Thumbnails

  • Cave Mirror #1.jpg
  • Cave Mirror #2.jpg


#909 CHASLX200

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Posted 11 May 2019 - 04:44 PM

Hello,

 

Here is what I believe will be a new mirror for your registry.

 

It is an 8" F7 and I think it is a Lightweight Deluxe.

55 11/16" FL, Serial Number M705303 dated May 20 1970

 

It is the one you might have seen for sale on Astromart with the bumblebee

paint job. I was helping the owner to sell it but everyone making an offer wanted it shipped or delivered and he didn't want to do that. So he offered it to me and I couldn't resist. The nontraditional paint job is unusual but professionally done and beautiful in person.

 

Anyway, photos are attached.

 

Thanks

Should be a killer mirror.



#910 PiSigma

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Posted 12 May 2019 - 09:52 PM

Hello,

 

Here is what I believe will be a new mirror for your registry.

 

It is an 8" F7 and I think it is a Lightweight Deluxe.

55 11/16" FL, Serial Number M705303 dated May 20 1970

 

It is the one you might have seen for sale on Astromart with the bumblebee

paint job. I was helping the owner to sell it but everyone making an offer wanted it shipped or delivered and he didn't want to do that. So he offered it to me and I couldn't resist. The nontraditional paint job is unusual but professionally done and beautiful in person.

 

Anyway, photos are attached.

 

Thanks

Thank you for the addition. I am way overdue to publish an update to the registry. I will get to it in the next day or two and yours will be in there.

 

The easiest way to tell a Lightweight from a standard mount is to measure the diameter of either the dec. or RA shafts. 1.0" = Lightweight, 1.5" = standard. 




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