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Author Topic: Camera cooling  (Read 440 times)

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Offline clive

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Camera cooling
« on: 16:49:02, 16 November, 2017 »
Clear here atlast now then there give 4 degrees below frezeing tonight  so i guess thrres no need to use 25 below ambiant on my moravian  what temperature should i set my ccd camer if any body nows

Offline johnadams

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Re: Camera cooling
« Reply #1 on: 17:25:40, 16 November, 2017 »

Depends if your taking Darks and Flats .

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Offline Roger B

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Re: Camera cooling
« Reply #2 on: 17:46:57, 16 November, 2017 »
I always have mine set to -10 in the warmer months and -15 to -20 in the colder months.    Just remember you dont want it running at 100% all the time for the desired temp.

Rog
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Online chris.bailey

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Re: Camera cooling
« Reply #3 on: 17:47:20, 16 November, 2017 »
Clive

Setpoint cooling is absolute so set your camera to -20 and thats where it will go and stay.

Chris
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Offline stars_are_cool

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Camera cooling
« Reply #4 on: 22:52:45, 19 November, 2017 »
I always have mine set to -10 in the warmer months and -15 to -20 in the colder months.    Just remember you dont want it running at 100% all the time for the desired temp.

Rog
...just asked about this, got my answer!
Interesting though, I’ve never “set temperature” on my guide-cam, am I missing something completely fundamental?
I’ve only used a guide-cam a handful of times alongside my (now sold off) unmodded canon 600d, I’m still waiting for my colour ccd to arrive...

Cheers

Graham


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Online chris.bailey

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Re: Camera cooling
« Reply #5 on: 07:49:56, 20 November, 2017 »
Graham

Your guide camera won't have a peltier so no cooling option on it. You colour CCD will have.

Chris
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Offline stars_are_cool

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Re: Camera cooling
« Reply #6 on: 20:07:58, 20 November, 2017 »
Graham

Your guide camera won't have a peltier so no cooling option on it. You colour CCD will have.

Chris

On one hand that’s too bad, but on the other hand it confirms I’m not thick!! ;-)
Checking the specs, it performs well to -10 and to +50.
It does the job for guiding, thats for sure...
Can’t wait to get the 183C, I’m told it’ll ship to on 25th November, gunning for that day, and some clear skies :-)

Cheers Chris.



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Online chris.bailey

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Re: Camera cooling
« Reply #7 on: 22:22:39, 20 November, 2017 »
Can’t wait to get the 183C...

That does not have set point cooling either, only a handful of the CMOS based cameras do.

Chris
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Offline stars_are_cool

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Re: Camera cooling
« Reply #8 on: 22:29:54, 20 November, 2017 »
Can’t wait to get the 183C...

That does not have set point cooling either, only a handful of the CMOS based cameras do.

Chris

Thanks Chris.
I can’t find specs that detail about operating temperatures, but I’ll contact Altair to ask about that.
It has a temperature sensor, and is cooled, so why they don’t list other info in that regard I don’t know...


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Online chris.bailey

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Re: Camera cooling
« Reply #9 on: 22:38:42, 20 November, 2017 »
Can’t wait to get the 183C...

That does not have set point cooling either, only a handful of the CMOS based cameras do.

Chris

Thanks Chris.
I can’t find specs that detail about operating temperatures, but I’ll contact Altair to ask about that.
It has a temperature sensor, and is cooled, so why they don’t list other info in that regard I don’t know...


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I don't think it is cooled other than having a fan. CMOS sensors are less (though it is relative) temperature sensitive than CCD's so set point cooling is less necessary. Some of the CCD's are VERY noisy at anything about freezing point so peltier coolers are used to drive the temperature down in the imaging chamber to sub zero temperatures with -10, -20 or even -30 being commonplace.

Chris
LX200|ZS70|FSQ85|FLT110|Altair DF250RC|EQ6 Pro(Rowan Belt Mod)|ParamountMX
ATIK383L+/EFW2/OAG|Lodestar|Baader 36mm LRGBHaSIIOIII
Starlight Express SXVRH16/ONAG/FW|Lodestar X2|Baader 2" Filters
Starlight Express SXVRH814/ONAG/FW|LodestarX2|Baader 2" Filters
Lunt LS60PTBF1200|DMK41|Quark Chromo
Samyang 135mm f1.8

Offline stars_are_cool

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Re: Camera cooling
« Reply #10 on: 23:02:50, 20 November, 2017 »
Can’t wait to get the 183C...

That does not have set point cooling either, only a handful of the CMOS based cameras do.

Chris

Thanks Chris.
I can’t find specs that detail about operating temperatures, but I’ll contact Altair to ask about that.
It has a temperature sensor, and is cooled, so why they don’t list other info in that regard I don’t know...


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I don't think it is cooled other than having a fan. CMOS sensors are less (though it is relative) temperature sensitive than CCD's so set point cooling is less necessary. Some of the CCD's are VERY noisy at anything about freezing point so peltier coolers are used to drive the temperature down in the imaging chamber to sub zero temperatures with -10, -20 or even -30 being commonplace.

Chris
Thanks again for the info.

Yep, that’s right, it’s “cooled” like the cpu in your computer is, it has a heat-sink, it doesn’t have an actual “refrigerator” (Peltier) on-board, it just moves the air, the heat-sink acts “like” a cooler, I’m sure you’re aware of how heat-sinks work, and likely more familiar than myself!!

You can find the specs here, albeit I can’t see anything about operating temperatures...which is odd, as they do have operating temperature specs for the gpcam2...

https://www.altairastro.com/Altair-Hypercam-IMX183-Colour-Astronomy-CMOS-Camera.html



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Offline stars_are_cool

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Re: Camera cooling
« Reply #11 on: 14:12:08, 25 November, 2017 »
Can’t wait to get the 183C...

That does not have set point cooling either, only a handful of the CMOS based cameras do.

Chris

Thanks Chris.
I can’t find specs that detail about operating temperatures, but I’ll contact Altair to ask about that.
It has a temperature sensor, and is cooled, so why they don’t list other info in that regard I don’t know...


Sent from my iPhone using Tapatalk

I don't think it is cooled other than having a fan. CMOS sensors are less (though it is relative) temperature sensitive than CCD's so set point cooling is less necessary. Some of the CCD's are VERY noisy at anything about freezing point so peltier coolers are used to drive the temperature down in the imaging chamber to sub zero temperatures with -10, -20 or even -30 being commonplace.

Chris

Hi Chris.
Been realising how valuable your info for me actually, my having done more research. Really appreciate it.

I will stick with the cmos for the next 12 months, and probably move to a mono CCD with proper regulated cooling.
Thanks again there mate.
Best,
Graham


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Graham.

William Optics ZS61 (...more refractors to follow!)
Skywatcher HEQ5-Pro
Laptop (image processing in StarTools), i7 16gb RAM, SSD

 

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