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Do I need a TEC cooled camera?

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#1 aneeg

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Posted 09 May 2021 - 07:17 AM

In Norway where I live, most nights, from September through April, the nights are between +5˚ C and -10˚ C. Would a fan in the camera be sufficient?
 

Arne


Edited by aneeg, 09 May 2021 - 07:18 AM.


#2 Dynan

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Posted 09 May 2021 - 07:34 AM

The object of a cooled camera is to stabilize the sensor temperature so noise will be consistent, so it can be calibrated out. A fan would only exacerbate the ambient temperature changes during your imaging session.


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#3 GaryShaw

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Posted 09 May 2021 - 08:27 AM

For EAA observing a cooled camera is not needed. If a few hot pixels onscreen bother you, just make a quick master dark frame and apply it while observing in Sharpcap Pro. It will eliminate any hot pixels. 
cheers

Gary


Edited by GaryShaw, 09 May 2021 - 08:28 AM.

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#4 DSO_Viewer

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Posted 09 May 2021 - 11:38 AM

For EAA observing a cooled camera is not needed. If a few hot pixels onscreen bother you, just make a quick master dark frame and apply it while observing in Sharpcap Pro. It will eliminate any hot pixels. 
cheers

Gary

This is not the only thing (hot pixels) a cooled camera takes care of but also dark current noise. This noise can hinder the faint detail from being revealed. Yes, I know stacking helps, but using a matching dark makes a huge difference. You will find it much easier and more accurate to match your darks with your lights by having a cooled camera allowing for an exact temperature specified.

 

Steve


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#5 garyhawkins

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Posted 09 May 2021 - 07:26 PM

I have used both.  A cooled camera is better for a number of reasons - including reduced noise and matched darks. It also has the advantage it's suitable for astrophotography and photometry.  That being said, an uncooled camera is more than adequate for EAA, albeit the image quality won't be quite as good.  Thus, if budget is a consideration trade uncooled for a larger sensor.  If you happy to spend around $800 - 1000, a ZWO ASI 294MC or ASI533MC make great general purpose EAA cameras. 


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