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FYI - Point Grey Chameleon source

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#1 Ratchet

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Posted 26 October 2012 - 06:36 PM

I couldn't find anything already posted on this ebay source, so here goes:

http://www.ebay.com/...=item416d21d61a

I got a very reasonable accepted offer on one of these. I'll update when it arrives and is tested out.

ratchet

#2 ValeryD

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Posted 27 October 2012 - 06:26 AM

I couldn't find anything already posted on this ebay source, so here goes:

http://www.ebay.com/...=item416d21d61a

I got a very reasonable accepted offer on one of these. I'll update when it arrives and is tested out.

ratchet


All is OK, include price, but in todays standards it's frame per second speed is very limited.

#3 Great Attractor

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Posted 27 October 2012 - 07:22 AM

in todays standards it's frame per second speed is very limited.


It is limited, but (for high-resolution solar imaging) not necessarily limiting. 1 minute at 18 fps gives a little over 1000 frames, which in my case gives satisfying results: thread.

#4 PiotrM

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Posted 27 October 2012 - 08:58 AM

Chameleon is a very good camera. However the prices are falling down and paying bit more you can get PGR Blackfly (soon) or Ximea xiQ on faster interfaces - if you need that extra speed.

#5 ValeryD

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Posted 27 October 2012 - 01:08 PM

in todays standards it's frame per second speed is very limited.


It is limited, but (for high-resolution solar imaging) not necessarily limiting. 1 minute at 18 fps gives a little over 1000 frames, which in my case gives satisfying results:


The speed is always in deficit. I now imaging the sun with high resolution with exactly the same chip (but with GigE via USB 3.0). 1000 frames are not enough to choose enough good frames out of this 1000. With good seeing I need at least 5000 frames for 500-700 frames suitable for processing. However if I need really noise free images I need avarage at least 1200 frames and this need to record about 10000 frames to choose from.
And the problem is that the sun's surface details are fast moving and if I recording 10000 frames at 33 frames per second, the time of record will 5 min! And most filaments around spots are smeared.

So, the faster, the better! USB 2.0 is a yesterday in high resolution imaging.

#6 PiotrM

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Posted 27 October 2012 - 01:16 PM

That's a lot of frames. I think you should like the CMOSIS sensors when they show up on USB3. 2048 x 2048 at 90FPS or 2048 x 1088 at 180FPS :)

#7 tim53

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Posted 27 October 2012 - 01:50 PM

I would think that the Chameleon, with its exview ccd, would be best suited to faint planets like Saturn through Neptune, where the sensitivity is most needed to keep the exposures down, but you're not likely to have the apterture to pull in enough light to enable shooting at high frame rates (for Uranus and Neptune, at least).

-Tim.

#8 PiotrM

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Posted 27 October 2012 - 02:11 PM

I would think that the Chameleon, with its exview ccd, would be best suited to faint planets like Saturn ..


ICX618 is bit better than ICX445.

#9 ValeryD

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Posted 27 October 2012 - 05:33 PM

That's a lot of frames. I think you should like the CMOSIS sensors when they show up on USB3. 2048 x 2048 at 90FPS or 2048 x 1088 at 180FPS :)


Depends of the price and if they will be free of Newton rings when used for H-a and Ca-K imaging.

Can you, Piotr, provide the link to such a cameras description or annoucements?

Thanks.

#10 PiotrM

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Posted 27 October 2012 - 06:54 PM

http://www.ximea.com...3-vision-camera
http://www.baslerweb...oducts/ace.html (GigE tab)

They are still unavailable as USB3/GigE, only CameraLink, but that's unusable for us. The CMV4000 cams will be around 1500-1800 EUR.

At the moment e2v CMOS sensors are free from sensor-induced Newton rings. Micron sensors do induce quite often, but that's older design. CMOSIS uses some new technologies so maybe it will be free of Newton rins.






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