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Equipment Discussions >> Video and Electronically Assisted Astronomy

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runner70
member


Reged: 08/21/10

Night vision
      #5617138 - 01/11/13 11:53 AM

Having recently acquired a 8079 hp British night vision device, I would like to hear from anyone with ideas concering mating it with one of my telescopes-- Meade LB 16, meade sn 10. I expect my ETX would be too slow at f/15. Also, has anyone used a narrowband H-alpha (~10nm) filter in concert with nv and a telescope?

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highfnum
Carpal Tunnel
*****

Reged: 09/06/06

Loc: NE USA
Re: Night vision new [Re: runner70]
      #5617439 - 01/11/13 03:11 PM

Yes there are some of us that have done this

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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: Night vision new [Re: highfnum]
      #5617767 - 01/11/13 06:44 PM

Keep the f ratio as small as you can get via focal reducer, though you might be limited by the in travel on your focussers.a 10 nm halpha filter would be good for emission nebulae if your intensifier has high gain and low noise, otherwise it might just give you noise. You could try some imaging light pollution filters, there have been several posts on these on this forum. I use a visible blocking filter to del with light pollution, rg630 glass. Intensifiers amplify anything you give them, you need to carefully block everything you don't want them to amplify for best performance.
Others can advise about your specific unit. Are you non US based?

Cheers

Peter


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runner70
member


Reged: 08/21/10

Re: Night vision new [Re: PEterW]
      #5617984 - 01/11/13 08:44 PM










Thanks for the tips-- I am in Livonia just outside of Detroit.


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runner70
member


Reged: 08/21/10

Re: Night vision new [Re: PEterW]
      #5984960 - 07/22/13 07:00 PM

Do you have any info/images from people using gen1 cascade tubes? I have a p8079hp and 10nm h alpha filter with 10" f/4 scope.

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StarStuff1
Post Laureate
*****

Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Night vision new [Re: runner70]
      #5985915 - 07/23/13 11:54 AM

If I understand correctly you have a Gen I tube. My experiences with a Gen I tube were not very good. A good pair of binoculars were more effective.

However, a 10-in f/4 scope and Ha filter are an excellent combo for IIEs but the difference in the views between Gen I and Gen III tubes are dramatic.


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: Night vision new [Re: StarStuff1]
      #5986106 - 07/23/13 01:41 PM

He has a cascaded gen1 tube that gives performance roughly comparable to early gen3 according to cj7hawk who provides instructions for people to make their own units up for very little £€$
I plan to put one together soon, so I can advise. The trouble is the tubes are big and heavy and will need time support to stop them messing the scope focuser.

Cheers

PEterW


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StarStuff1
Post Laureate
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Reged: 04/01/07

Loc: South of the Mason-Dixon Line
Re: Night vision new [Re: PEterW]
      #5986454 - 07/23/13 05:06 PM

Thanks for the clarification PEterW. I was a little unsure about the "cascaded" part. I am not an experienced technical type. I tend to put things together and just see if they work...or follow directions from others who have done the assembly work. The Gen III I have is very light.

Interesting info about the cascaded tubes available in Europe? (only?) Don't know where runner70 is located.

FWIW I have had a bit of experience with a 12nm Ha filter and a Gen III IIE. A search here should show several observing reports.


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runner70
member


Reged: 08/21/10

Re: Night vision new [Re: PEterW]
      #6001688 - 08/01/13 04:52 PM

I plan to use an independent binocular mount to hold the p8079hp tube at the eyepiece. Does anyone have images that demonstrate what can be seen with, e.g. , a 10" telescope (f/4) and this cascade tube?

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