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Equipment Discussions >> Video and Electronically Assisted Astronomy

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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
See 5x more stars! new
      #5943067 - 06/27/13 12:55 PM

Got to be good..:. Who wants to start the comments them?!
http://www.nightowloptics.com/documents/GalacticViewSellSheet.pdf

Nice to see us being advertised to though!

Cheers

PeterW

PS anyone volunteer to buy one? I hope it has a fast lens on the front!


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NickK-UK
super member


Reged: 07/28/12

Loc: UK
Re: See 5x more stars! new [Re: PEterW]
      #5943160 - 06/27/13 01:57 PM

Hmm... being English I start 100% sceptical.

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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: See 5x more stars! new [Re: NickK-UK]
      #5943197 - 06/27/13 02:17 PM

Being English we don't need many fingers to count the stars at the moment... What with the clouds.
Skeptical.... NVG can add a few magnitudes, someone do the maths to see how many extra stars you ought to be able to see..... Maybe this will do as it says, but other people's kit will do far better....

Cheers

PeterE


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Larry F
Carpal Tunnel
*****

Reged: 05/24/04

Loc: Westchester, NY
Re: See 5x more stars! new [Re: PEterW]
      #5943305 - 06/27/13 03:30 PM

I recently saw an ad for a pair of 10x50 binoculars that touted that using them would allow you to "see 35 miles!". Of course if you used them to view M81 on a relatively dark night, you'd beat that by a factor of over 10 to the 19th. They also claimed to "magnify up to 1000%" but being 10x binculars they actually magnified exactly 1000%. "There a sucker born every minute." (PT Barnum)

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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: See 5x more stars! new [Re: PEterW]
      #5943310 - 06/27/13 03:35 PM

Ok some numbers. Looking at the bright star catalogue.... A 5x number f stars corresponds to a magnitude increase I around 1.5 which corresponds to a scope diameter increase of around 2. Our gen3 colleagues reckon a 3x aperture increase is sometimes possible, corresponding to 2.38 magnitudes and an increase in the number of stars of around 15x.

So the claims are believable for a less than gen3 system.

Cheers

PEterW


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mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: See 5x more stars! new [Re: PEterW]
      #5943518 - 06/27/13 05:49 PM

It's an inexpensive gen1 image intensifier packaged up nicely in simple consumer oriented package.

http://www.nightowloptics.com/index.php?option=com_k2&view=item&id=14...

Anyone want to guess why there is a small optical objective on top of the 60mm one?

"• Built-in columnated infrared illuminator for use in complete darkness or to improve target recognition in any environment."


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GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: See 5x more stars! new [Re: mclewis1]
      #5943539 - 06/27/13 05:58 PM

Mark,
I assume "columnated" is their error and not yours (I haven't looked at the web page.)


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mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: See 5x more stars! new [Re: GlennLeDrew]
      #5943548 - 06/27/13 06:03 PM

yes it's theirs ... I left it just as they published it ... and yes it grates on me too.



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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: See 5x more stars! new [Re: mclewis1]
      #5943555 - 06/27/13 06:12 PM

... Improve target recognition... Thermonuclear flash guns? Going to take a big old flash to help it see the stars better!

Peter


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NickK-UK
super member


Reged: 07/28/12

Loc: UK
Re: See 5x more stars! new [Re: PEterW]
      #5944242 - 06/28/13 05:42 AM

They should have made it with screw threads - so you can slot it between an EP and the main tube. Then provide a basic EP + tube for new users.

Question is - does it perform integration? This is where the main gain comes from with NV as it removes alot of the speckle noise. Probably better getting a colour samsung 2000 + portable TV/monitor and using that if you have a travel scope.


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Mittag56
sage


Reged: 07/08/09

Loc: West Amboy, N.Y.
Re: See 5x more stars! new [Re: NickK-UK]
      #5944631 - 06/28/13 11:27 AM

Gee if i got one...I would be able to see the raccoon's and possum that i trip over when i head out to my building...could be a nice safety aspect to it...

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BrooksObs
professor emeritus


Reged: 12/08/12

Re: See 5x more stars! new [Re: NickK-UK]
      #5944640 - 06/28/13 11:34 AM

The impression I take away from the ad is that the device works basically as an old fashion IR viewer, making its images pretty incompatible with what the eye would see. Who really wants to (and what would be the purpose of) a visual observer viewing an IR enhanced sky? One of the "star-Light" sensors in such an application might be nice, but I expect that it would be priced several times higher.

BrooksObs

Edited by BrooksObs (06/28/13 11:35 AM)


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: See 5x more stars! new [Re: BrooksObs]
      #5944755 - 06/28/13 12:57 PM

An IR enhanced sky..... If it is halpha enhanced then I think your answer would be yes! A wider spectral range allows more light to be collected and so fainter stuff to be seen/

PeterW


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Dragon Man
Carpal Tunnel
*****

Reged: 03/07/06

Loc: Snake Valley, Australia
Re: See 5x more stars! new [Re: PEterW]
      #5947541 - 06/30/13 04:14 AM

Maybe with it being marketed this way we can get one into Australia.

We aren't allowed to own Night Vision gear here.
There is one supplier (and only ONE) in Australia.
At Perth, Western Australia, but you have to fight for permission to get a permit to need one. The permit is hard to almost impossible to get!

This commercial product may make is possible for us to get into night vision gear, if we are allowed to import them and get them through customs.
We aren't allowed to have Green Laser Pointers without a permit either, and not many permits are given!!!


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PEterW
professor emeritus


Reged: 01/02/06

Loc: SW London, UK
Re: See 5x more stars! new [Re: Dragon Man]
      #5954264 - 07/04/13 02:28 AM

One of your own has provided plans and 3D printable parts to build a cascaded gen1 unit (no export restrictions) that will give near gen3 performance, including starlight levels of performance.
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5210545/Main...
Also look for cj7hawk on a number of other forums where details are provided as he currently leading people through the build. Cheaper than many gen1.... Go and make one, let you stealthily navigate star parties as well.

Cheers

PeterW


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Dragon Man
Carpal Tunnel
*****

Reged: 03/07/06

Loc: Snake Valley, Australia
Re: See 5x more stars! [Re: PEterW]
      #5954311 - 07/04/13 03:50 AM

Thanks Peter, I remember that thread.
You will notice that I had responded in there a couple of times.

But a 2 kilogram Gen1!!! That's 4 1/2 pounds

It would be nice if we could just buy one like in USA.


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