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Side by side compare with QHY5III290C and QHY5III462C

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15 replies to this topic

#1 QiuHY

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Posted 20 May 2020 - 09:38 AM

Hello,

        The new IMX462 sensor generated a lot interesting. Now we have made a QHY5III462C and doing some test with it. Here is some test resutls

 

 

(1) Visible light sensitiivty

 

 As sony said, The IMX462 has the sHCG function which gives more lower readout nosie. We put a QHY5III290C and QHY5III462C and capture the same object. (both installed the IR cut filter to avoid the IR light ) With the same exposure time, gain and offset. The resutls shows there is significant SNR increase in QHY5III462C.   (Left is QHY5III290C. right is QHY5III462C)  

 

 

 

 

(2) The IR reponse  

 

We use the TV IR remoter to illumentate the object and use both QHY5III290C and QHY5III462C capture at the same time. The results shows a huge high response on QHY5III462C.  We will post the image soon.

 

 

Best regards,

Qiu Hongyun

Attached Thumbnails

  • 462vs290.jpg
  • 462VS290-2.jpg
  • 462VS290-3.jpg

Edited by QiuHY, 20 May 2020 - 10:58 AM.

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#2 lgwong

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Posted 20 May 2020 - 10:53 AM

Waiting for my next planetary imaging camera.

Sent from my MI 9 using Tapatalk

#3 gregj888

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Posted 20 May 2020 - 11:07 AM

Qiu, will there be a monochrome version?



#4 QiuHY

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Posted 20 May 2020 - 12:50 PM

Qiu, will there be a monochrome version?

I am not sure of it. Depent on Sony. I remeber for IMX290, the first come out is the color verson but some time later the monochrom is also avalible. So maybe in future there is mono version.

 

Best regards,

Qiu Hongyun



#5 QiuHY

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Posted 22 May 2020 - 01:30 PM

Today we tested the readout noise. We get a lowest value at the gain=400 and readout noise is 0.52e. We will test the gain range from 400-700 to see if we can get more better readout noise.

 

 

Attached Thumbnails

  • QHY5III462_RN.png


#6 leoyasu

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Posted 03 June 2020 - 02:13 PM

Hi Qiu! I was about to pull the trigger on the QHY5III290C when speaking to my local QHY dealer, he informed me some details of the new QHY5III462C. I'm curious about the quad IMX462's bayer pattern. Also I read that the sensor has pixels with a size of 2.9um but Im not sure how this relates to this type of bayer pattern . Can you tell us more about this? Thank you!. Regards, Leo.



#7 QiuHY

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Posted 07 June 2020 - 12:23 PM

Hello ,

 

        The QHY5III462C pixel size is same with the QHY5III290C. And the bayer pattern is also the same.  The only differnece is the senstivity in both visible light and Infrand is increase. The visible light increasing is due to its "sHCG" mode  and the Infrad increase is due to the "thick silicon" technology.  The Infrad senstivity is double than QHY5III290C so it is a very good infrad camera. And under IR, the bayer filter become transimissive so it can be regards as a mono camera there.  

 

         We plan to give two free 1.25inch filter with QHY5III462C. One is the IR cut filter. Another is the IR850 (IR pass filter).

 

Best regards,

Qiu Hongyun


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#8 leoyasu

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Posted 07 June 2020 - 12:48 PM

Thanks for your reply Qiu! I just ordered the QHY5III462C to my local QHY supplier. Best Regards, Leo.



#9 Phil Jones

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Posted 14 June 2020 - 11:39 PM

Pardon my ignorance, but in what scenario would this NIR camera be used? Not sure I understand the benefit.



#10 JerseyBoy

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Posted 16 June 2020 - 06:40 AM

Pardon my ignorance, but in what scenario would this NIR camera be used? Not sure I understand the benefit.

 

My guess is the sensor has been designed by Sony for use in security camera's, but QHY have seen it has potential with it's high IR abilities, for Nebula photography? I guess it depends how the IR numbers stack up against a Mono camera?


Edited by JerseyBoy, 16 June 2020 - 06:41 AM.


#11 dghent

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Posted 16 June 2020 - 08:29 AM

Pardon my ignorance, but in what scenario would this NIR camera be used? Not sure I understand the benefit.

Planetary imaging will definitely benefit from this enhanced NIR sensitivity, and certainly when doing methane (889nm) imaging of the gas giants and NIR of Venus which, I'm under the impression, can reveal surface structures.


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#12 jonbosley

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Posted 16 June 2020 - 06:53 PM

Just placed an order. Very interested to see how this does on NIR lunar imaging.
 


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#13 brian32672

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Posted 08 July 2020 - 01:01 AM

Certainly found my next oag/onag camera. And should be fun to use the nIR.

Was just looking for a new camera, a few days ago. Did not find anything I like specific.

But with the increased seeing ability (less noise, small pixel ratio, etc.)

I, most assuredly will be getting this.

 

Now if only Astronomics.com could only ship my counterweight I ordered (on June 20, 2020 10:33:54 AM).

May need to cancel that order, as still not shipped...……. Celestron apparently is to blame for this.



#14 markm75c

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Posted 17 August 2020 - 02:07 PM

What is the unity gain value for the QHY5III462C out of curiousity?


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#15 BeltofOrion

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Posted 31 August 2020 - 11:52 AM

Am I correct in assuming this camera would be able to double duty as a guide camera in Celestron's OAG? If so, how would it compare with the ZWO ASI290MM Mini as a guide camera?



#16 The Mad One

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Posted 06 September 2020 - 12:30 AM

I have looked at the QHY5III462C as a replacement for my older OSC solar system imaging, but not fully researched it so I'll just ask here and now.  Would this camera handle using a 350nm UV Venus filter with a good result?  I see it uses an external IR cut filter but no UV filter such as the built in variety of UVIR cut filters used in most varieties of OSC "solar system cameras".  Maybe a dumb question on my part, but  as I understand it most if not all OSC cameras have a UV filter "built in" the image chain thereby making a 350nm UV Venus type filter pretty much useless with them.




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