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Qhyzwoimxitis...

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#1 mmalik

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Posted 06 November 2020 - 01:07 PM

Qhyzwoimxitis is a highly contagious infection that’s spreading fast in the community. I was recently afflicted by it, first by the less virulent strain (IMX178) and now by much lethal strain (IMX455).

 

 

This is a discussion about all that ails you in terms of Qhyzwoimxitis (QHY/ZWO/IMX). The discussion is NOT limited to any particular strain, rather it is an effort to take the complexity out of the disease for all kinds of affliction scenarios, to management, to recovery and to rehabilitation. Discussion is open to anything and everything Qhyzwoimxitis (QHY/ZWO/IMX); feel free to contribute.

 

 

DSLR/MILC world required invasive surgical procedures, and implants, & prosthetics were often required. Coming from DSLR/MILC world, this a whole new world of pathogens where adapting to the disease can kill you. Vaccines are still being developed but there is no promise of their effectiveness. Ongoing research and development are part of the discussion as new variants enter the community.

 

 

Let’s start with adaptation woes first before we get into herd immunity and other much complex aspects of the disease. Regards

 

 

Note: A recently acquired a pathogen (IMX455) of mine; will discuss my adaption woes and options next...

 

 

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Edited by mmalik, 06 November 2020 - 02:08 PM.

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#2 Jinux

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Posted 06 November 2020 - 01:28 PM

We urgently need very strict "social" distancing from the spreading "community".

With complication with other pandemic, it's simply uncontrollable.

Only hope is that it's spreading faster to public than the pathogen can "duplicate" from the source, so newer patient is not growing exponentially but limited by supply.


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#3 wxcloud

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Posted 06 November 2020 - 01:35 PM

Heard it's highly transmittable through the web and can cause damage to your bank account. Can be slowed down by clouds and light pollution...  shocked.gif


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#4 Jinux

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Posted 06 November 2020 - 01:59 PM

Heard it's highly transmittable through the web and can cause damage to your bank account. Can be slowed down by clouds and light pollution...  shocked.gif

From my suffering experience, they don't slow down. They just increase incubation period with more lethal symptom when it burst.


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#5 mmalik

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Posted 08 November 2020 - 09:27 AM

This will be much involved and deep study covering all kinds of pathogens, theirs strains and their biological processes. Here is an outside look at IMX455.

 

 

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Edited by mmalik, 08 November 2020 - 09:29 AM.

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#6 mmalik

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Posted 08 November 2020 - 09:27 AM

You know me...

 

 

Performing investigative laparotomy right of the bat seemed necessary. Regards

 

 

Note: IMX455 shown

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Edited by mmalik, 08 November 2020 - 09:29 AM.


#7 mmalik

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Posted 08 November 2020 - 09:38 AM

While quite elegant; after having seen guts of many 'real' and DSLR/MILCs, there wasn't much inside to look at. Opening and closing is just a matter of four screws and one fan connection. Regards

 

 

Note: While heat sink "feels" bit flimsy/entry level on the outside, inside look paints a different picture

 

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#8 mmalik

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Posted 08 November 2020 - 09:42 AM

The fan...

 

 

MagLev are good fans, with less vibration; plus there are some damping rings (not visible in this view) around mouthing bolts.

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Edited by mmalik, 08 November 2020 - 09:46 AM.

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#9 mmalik

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Posted 08 November 2020 - 09:50 AM

The motherboard...

 

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Edited by mmalik, 08 November 2020 - 09:51 AM.

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#10 mmalik

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Posted 08 November 2020 - 10:06 AM

There seems to be some kind of dummy desiccant plug (correction welcome) since it as active dew heater which can make the whole camera get quite HOT if left on and if cooler was not running.

 

 

IMPORTANT: Don't leave the power ON to the system when cooler is not running since dew heater may keep running unabated and can make the entire body quite hot to touch and may not be good for the components inside. Dew heater seems quite powerful since it made the massive camera hot while bit beefier tilt adapter was still attached. While body/window heat is bit detached from the core components (motherboard, sensor, heatsink, etc.) it still feels something is a miss with the heat running scenario. Not sure if shutting heat off explicitly in NINA (before closing NINA) will prevent such an outcome?

 

 

Note: IMX455 shown

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Edited by mmalik, 08 November 2020 - 10:13 AM.


#11 mmalik

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Posted 08 November 2020 - 10:08 AM

More views of the window...

 

 

Note: IMX455 shown

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Edited by mmalik, 08 November 2020 - 10:12 AM.


#12 mmalik

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Posted 08 November 2020 - 10:18 AM

I like the simplistic, to the point design...

 

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#13 calypsob

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Posted 08 November 2020 - 08:45 PM

The motherboard...

I took the back off of mine. I was afraid to go further. So now im curious about the most important aspect. What thermal interface is between the sensor and cooler? 
is it sensor, grease, peltier, grease, heatsink?


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#14 mmalik

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Posted 08 November 2020 - 09:22 PM

To answer you question, let's first look at the anatomy of what's known...

 

 

 

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#15 mmalik

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Posted 08 November 2020 - 09:25 PM

Anatomy of IMX in alpha...

 

 

CMOS shows through a square window in the sensor motherboard.

 

Note: a7III shown as an example; IMX455 (a7RIV) would look the same...

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Edited by mmalik, 08 November 2020 - 09:27 PM.


#16 mmalik

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Posted 08 November 2020 - 09:38 PM

I doubt IMX455 installed in dedicated cameras would be any different in overall anatomy; I mean there would have to be a sensor motherboard where the white ribbon (above) would connect. Windowed or not is not known?

 

 

So to answer your question, my best estimate is that it is peltier -TEC that cools the CMOS with some thermal paste between the surfaces. If windowed, TEC may not be in direct contact with the CMOS and there would have to be an intervening conductor, again with possibly thermal paste between the surfaces.

 

 

On the hot side, heat sink would have to be in direct contact with the TEC with again some thermal paste between the surfaces. Those are my best estimates at this time. Corrections welcome. Regards


Edited by mmalik, 08 November 2020 - 10:04 PM.


#17 mmalik

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Posted 08 November 2020 - 09:45 PM

While we are on the subject, in terms of heat conduction, I have used flexible copper for heat conduction through the CMOS window in alphas. Regards

 

 

Note: a7R II shown; flexible copper maintains the IBIS (Image Stabilization) functionality while actively cooling the sensor

 

 

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Edited by mmalik, 08 November 2020 - 10:06 PM.


#18 mmalik

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Posted 08 November 2020 - 09:47 PM

Latest Sony (a7SIII) uses a different kind of conductor and for the first time. Regards

 

 

A unique Σ (sigma) shaped graphite-alloy heatsink is built into the image stabilization unit, allowing the sensor to dissipate heat five times more effectively than in previous models, while allowing it to move freely and avoiding interference with the stabilization system.

 

 

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#19 mmalik

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Posted 08 November 2020 - 09:58 PM

How do you power the beast? You'll need this...
 
 
Note: Most ASI devices including ASIair don't come with a power cable or adapter and probably for a good reason...

 

 

My QHY600M came with a 12VDC power supply. I always wondered why the plug goes too easily into QHY600M power socket. It wiggles quite a bit. My Optec Focus Boss II auto focuser hub uses 2.5 x 5.5mm power connection so I plugged in QHY600M power supply into Focus Boss and it FITS!!!!!
 
It turns out the plug of QHY600M power supply uses 2.5 x 5.5mm connection even though the power socket of QHY600M uses 2.1 x 5.5mm. Why did QHY did that? So I will have to order a 2.5 x 5.5mm to 2.1 x 5.5mm adapter. Something like:
 
https://www.amazon.c...734&sr=8-2&th=1
 
So if you are having intermittent power issue with QHY power supply and QHY600M camera, now you know why.

 

I guess my point is to be aware of what's included with QHY600 camera including power supply and cables. Bottom line is to make sure you are using proper power connectors between power supply and QHY cameras. I kind of wished all devices use 2.5mm instead of 2.1mm because 2.5mm is a much tighter connection

 

 

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#20 mmalik

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Posted 08 November 2020 - 10:02 PM

A highly recommended power scenario...

 

 

Note: Such a solution can last you a few nights with the capability to re-charge with a solar panel if you are away from the civilization (plug-in power)

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Edited by mmalik, 08 November 2020 - 10:07 PM.


#21 Peter in Reno

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Posted 08 November 2020 - 10:07 PM

If ZWO is watching your thread, they will likely void your warranty because you took apart the camera during the warranty period.

 

Peter 



#22 mmalik

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Posted 08 November 2020 - 10:09 PM

I'll tell them it was yours, not mine :)


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#23 Peter in Reno

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Posted 08 November 2020 - 10:21 PM

I'll tell them it was yours, not mine smile.gif

Huh? This thread documented that you took apart your camera during the warranty period.


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#24 calypsob

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Posted 08 November 2020 - 10:32 PM

I wouldn't sweat it
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#25 bugbit

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Posted 09 November 2020 - 03:23 AM

Thank you mmalik for both the humor and the technical skill. Your brassiness and unbridled sense of exploration are noted and appreciated.


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