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Equipment Discussions >> Electronically Assisted Astronomy

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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6342290 - 01/29/14 02:49 AM

Furmo, I don't understand how the eyepiece is set up to go
into the cap. Would you try and explain how the eyepiece set
is or even better show a picture as though your getting ready to put it inside the cap. Many thanks for the help.
I really appreciate it. De Lorme


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6343207 - 01/29/14 01:51 PM

I got cj7hawks 3d parts made up, jammed a c-cs mount adapter in the front and wedged a 10x loupe I had up the back. Can fit prime focus or use cheap CCTV lenses. Simple, the battery and switch are held on by sticky tape at the moment.

Cheers

Peter


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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. [Re: PEterW]
      #6344096 - 01/29/14 08:55 PM

Peter, Take a picture so we can see what you have done.
Have you looked up with the intensifier yet? If so how
good was the view. De Lorme


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6348978 - 02/01/14 11:51 AM Attachment (23 downloads)

Here goes, simple, keepeaning to put it in a proper tube. Probably need to blacken the lens end to stop stray light.

Peter


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: DIY Intensified IIT setup for around $200 project. new [Re: PEterW]
      #6348979 - 02/01/14 11:52 AM Attachment (19 downloads)

And

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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: DIY Intensified IIT setup for around $200 project. new [Re: PEterW]
      #6348981 - 02/01/14 11:53 AM

Looking up is hard as it hasn't stopped raining in who knows how long, we're all swimming over here.

Peter


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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: PEterW]
      #6349860 - 02/01/14 07:30 PM

http://imageintensifier.blogspot.co.uk/
Peter, That looks real good. Dave{at the above website}said that he had light going through the tube so he first wrapped his in duck tape{mans best friend LOL} and then put heavy gage aluminum foil over the tape and then duck tape over the aluminum foil. That solved the problem. How close
would you say is the 10x loupe is to the viewing screen?
Thanks De Lorme


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6350526 - 02/02/14 02:41 AM

Pretty close, it came with a clear spacer to hold it at focus which was removed. The printed parts have a helical focus that works well but might need a tint bit of sanding to get working first time. The front lens mount is a cmount spacer FORCED into place so it'll never go anywhere.

Peterw


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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: StarStuff1]
      #6352095 - 02/02/14 09:32 PM

StarStuff1, Which would be better Lumicon 25 red or 29 red?
I would be using it on a CR6". De Lorme


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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6352098 - 02/02/14 09:35 PM

Does any body here know where to buy a gain control and how to wire it in? Thanks De Lorme

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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6352491 - 02/03/14 03:00 AM

No gain, just power on/off.
Quick cascade check in my streetlight infested backyard, no moon and I tried to hide from the streetlights. The cascade(50mm f1.4 CCTV lens) shows more stars with bright green background than naked eye. Pop a 12nm halpha filter and there is still a noticeable green background with slight scintillation (and probably some dust visible on the screen) The stars are pretty much all gone, m42 seems less visible too, no other nebulae around.

Comparing to a "proper" NV (25mm f1.5? stock lens) there are more stars (resolution better) and still stars with the halpha, darker sky background, m42 improved with the filter and California and Rosetta nebulae faintly visible too.
Ok not a fair test, should have tested the rg630 filter instead as this wouldn't have affected it so much. The cascade is definitely sensitive, I was reading book covers in a pitch black room with it.

Cheers

Peter


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cuivienor
professor emeritus


Reged: 10/07/10

Loc: Tokyo, Japan
Re: DIY Intensified IIT setup for around $200 project. new [Re: PEterW]
      #6352511 - 02/03/14 03:33 AM

Guys, please please try to couple this with a narrowband H-alpha filter - I think 12nm is still too broad, as excess LP will make its way and get magnified - this could be the answer to light pollution for live nebula viewing:

Telescope + 7nm Baader H-alpha filter + image intensifier + eyepiece = awesomeness?

Basically you filter out all the light pollution and moonglow, and amplify the most common frequency to have nebulae stand out. This could really be a killer in light polluted area. I'll venture and say you could probably view the horse nebula from heavily polluted sky with that kind of setup. I cannot stress enough how awesome that would be.

So now, on to how to procure those tubes and how to build. It seems the difficulty here is to get good tubes. Gluing some batteries, eyepiece lens, etc is the easy part.

So my understanding is the Gen1 is available everywhere, but Gen3 is restricted to the US. However, Gen1 can be cascaded (but doesn't that multiply the price? i.e. multiple units are needed). How about all those night vision scopes? Do they contain such tubes?

Honestly, I'd gladly buy such an "eyepiece" at a reasonable price (rather than the expensive Collins eyepieces).

Looking forward to some progress on this, and some international smuggling of Gen1 tubes (note to NSA Prism: smuggling term is a joke. Gen1 seems OK around the world, so relax).

Cheers,

Yannick


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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: cuivienor]
      #6352534 - 02/03/14 04:24 AM

starlightnv@zen.co.uk
Yannick, Starlight says that they will ship world wide.
imageintensifier.blogspot.co.uk/
Check out the above website. If you do a search there are others doing this. De Lorme


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highfnum
Carpal Tunnel
*****

Reged: 09/06/06

Loc: NE USA
Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6352542 - 02/03/14 04:36 AM

Did you do anything with 9644 tube?

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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6352548 - 02/03/14 04:43 AM

http://cgi.ebay.co.uk/1k-POTENTIOMETER-Lin-variable-Linear-1-k-resistor-pot_W...

Peter the above website shows where you can buy a gain control. I read recently that it was installed between the
positive{on the tube}and the on off switch. But don't know how the wiring would go. De Lorme


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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6352550 - 02/03/14 04:47 AM

Highfnum, I don't know anything about the 9644 tube but I will check it out. De Lorme

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highfnum
Carpal Tunnel
*****

Reged: 09/06/06

Loc: NE USA
Re: DIY Intensified IIT setup for around $200 project. new [Re: runner70]
      #6352573 - 02/03/14 05:32 AM

sorry - cj7hawk had it listed in his /her shopping list

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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. new [Re: highfnum]
      #6352579 - 02/03/14 05:41 AM

I took a quick look, $500 plus the accessories to put it together. To high for me right now, maybe later.
I'm sure the 8079HP will help on gobblers and nebula's.
Will be here soon, I can't wait. De Lorme


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cuivienor
professor emeritus


Reged: 10/07/10

Loc: Tokyo, Japan
Re: DIY Intensified IIT setup for around $200 project. new [Re: De Lorme]
      #6355725 - 02/04/14 02:43 PM

Well I bit the bullet on the 8079HP! Let's see what I can get out of it!

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De Lorme
professor emeritus
*****

Reged: 12/30/08

Re: DIY Intensified IIT setup for around $200 project. [Re: cuivienor]
      #6356028 - 02/04/14 05:40 PM

Cuivienor
I keep looking at Furmos M42 picture LOL. It's keeps me believing that it's really going to help.
http://imageintensifier.blogspot.co.uk/
On the above website Dave said:David Jones1 January 2014 09:57

It should work very well on globular clusters as they are older redder stars transmitting partly in infra-red and these tubes also operate partly in infra-red. I haven't had a chance to try it yet on a globular cluster, but from my location even M13 is not all that bright in an ordinary eyepiece so I'm hoping the tube will show a significant improvement.
This is won't be an Generation 3 quality but it will be better than we think. If it does this good on M42 it will
make a significant difference on say M79{Mag7.7} and say all the way up to mag9 maybe Mag 10?. When looking at Furmo's M42 picture I believe that open clusters like M35 through M38 will fit into the field of view and will be greatly enhanced. I'm really excited. De Lorme


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