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Soviet Spy Satellite refractor 42cm

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9 replies to this topic

#1 Riccardo_italy

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Posted 13 November 2019 - 01:38 PM

Maybe someone is interested, although it's very expensive

 

https://aste.catawik...kavels/29979177

 

The lens has a 42 cm diameter, a 132 cm length. It weighs 158 kilograms. The combined weight of lens and case is 188 kilograms.

Disclaimer: obviously I don't know the seller, I simply found the news on an Italian website (here: https://www.hwupgrad...lino_85469.html )


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#2 Astroman007

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Posted 13 November 2019 - 01:54 PM

If the provenance is correct and the history is accurate, a great find!

 

Mind that "if" though.



#3 macdonjh

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Posted 13 November 2019 - 01:58 PM

From Wikipedia:

 

"Space historian Peter Gorin estimates that the camera lens had a diameter of 600mm and a focal length of approximately 3000mm to 4000mm. This could give a resolution of 0.5m, although there is some evidence that the lens diameter was only 420mm [6], which would reduce the ground resolution to only 0.7m."

 

Wow, focal length as long as 4000mm...  Most of the OTA would be "behind" the mount, too, since the lens assembly weighs in at 158 kg.  But wow, a 420mm f/7- f/9.5 refractor.  I wonder if I could get fifteen AV-X mounts synchronized to carry it?

 

Nah.



#4 Richard O'Neill

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Posted 13 November 2019 - 02:20 PM

Is a 'T' adapter available? wink.gif


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#5 bartine

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Posted 13 November 2019 - 02:46 PM

I knew a person who worked on precision optics for military satellites.

He mostly dealt with mirrors - but they were all very high precision grinds.  

 

If real, the optics would be very high precision.



#6 dhferguson

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Posted 14 November 2019 - 02:17 AM

Yeah, but check the WEIGHT of the thing!



#7 grendel

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Posted 14 November 2019 - 03:14 AM

does it have a m42 thread to mount a zenit camera behind it?


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#8 Kokatha man

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Posted 14 November 2019 - 05:40 PM

does it have a m42 thread to mount a zenit camera behind it?

Nyet..!!! 


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#9 Joe Cepleur

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Posted 16 November 2019 - 11:24 AM

Is the blueish cast of the anti-reflective coating a problem of color in the photograph, or is some special coating used in satellites? I've seen purple casts before, and green, but never distinctly blue. 



#10 MJB87

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Posted 23 November 2019 - 04:06 PM

Hi everyone,

 

Just a friendly reminder that we are by convention an English language forum and users are expected to translate posts into English before posting them.  I realize that some of the Russian-language posts were made in jest but rules are rules for a reason. Thanks.

 

Marty




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