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image intensification tube use in AP these days?

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#1 teletech

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Posted 20 December 2020 - 02:54 AM

Hey all, I'm new here and I'm sad to say I found the site too late.  About 5 years back I was working at an observatory and was in the right place at the right time to rescue the last of our unexposed plates.  I set back up one of the darkrooms and had a go at some AP.  I spent a lot of time flailing around reinventing the wheel but got some usable images.

 

Anyway, back on-topic.  I know in the realm of scientific astronomy there was a period toward the end of film but before CCDs were the dominant technology a lot of work was done with Varo image intensification tubes. The resolution wasn't great but for some things that didn't matter, spectroscopy of course but I think some comet imaging and such as well.  I was just wondering if anybody has played with that on the hobby level?



#2 TxStars

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Posted 20 December 2020 - 03:31 AM

There is still some use of the tubes, not for film work that I know of..

If you read through the Night Vision Astronomy section you will find a lot of information.

https://www.cloudyni...sion-astronomy/



#3 cnoct

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Posted 20 December 2020 - 04:47 AM

Very much so, here's an impressive catalog of image intensified AP by CN member jdbastro: https://www.dpreview...ries/3751398018 and quite an video catalog here https://www.youtube....jdbastro/videos .

 

If it your thing you know and vice versa 🖖🏻. 

 



#4 Todd N

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Posted 20 December 2020 - 07:04 AM

I have an Astronomy mag from the 80's( I think) somewhere that did an article on using an intensifier tube with film; Something I pondered. Interestingly, there was a couple of Space Shuttle Flights that had an RC telescope with such a  setup: Image intensifier on film to record ultraviolet wavelengths. I think this is the only astronomical telescope that went to space that used film that I can find out.

 

Ultraviolet Imaging Telescope(UIT)

https://faculty.virg...u/rwoclass/UIT/



#5 teletech

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Posted 20 December 2020 - 03:50 PM

Some cool links, thanks for those.  Funny to see those pictures of the shuttle and to remember the days when that was exciting and new stuff.

Seems like not a lot of film work going on and none with tubes now. 

 

Back when they were a useful technology they were mounting them in chillers and cold plates to reduce noise.




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