Difference between hot and warm pixels?

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SUMMARY

The discussion centers on the distinction between hot and warm pixels in the context of CCD imaging, particularly during a practical on Cosmic Rays using CCDOPS software. Hot pixels are defined as defective pixels that consistently register high values, while warm pixels are those that exhibit elevated readings but still retain usable data. The "kill warm pixel" command in CCDOPS is utilized to address warm pixels, ensuring accurate image calibration. Understanding these differences is crucial for effective image processing in astrophotography.

PREREQUISITES
  • Understanding of CCD imaging technology
  • Familiarity with CCDOPS software
  • Basic knowledge of pixel behavior in digital imaging
  • Concept of Cosmic Rays and their impact on imaging
NEXT STEPS
  • Research the effects of Cosmic Rays on CCD images
  • Learn about pixel calibration techniques in astrophotography
  • Explore advanced features of CCDOPS software
  • Study the differences between various types of pixel defects in imaging
USEFUL FOR

Astronomy students, astrophotographers, and anyone involved in CCD imaging and calibration processes will benefit from this discussion.

the riddick25
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i have an observatory practical to do, and being in my first year of uni, we are given guidelines on what we need to do.
the practical is on Cosmic Rays, and we will be taking two 15 minute exposures to record how many we get.

now my question, there is a step in the practical where we have to open the image in CCDOPS, and use the "kill warm pixel" command.
there is a question later asking about hot pixels and what you can see in the image, i already know what a hot pixel is, but i don't know what a warm pixel is, and if there is any difference between the two.

so, is there any difference between warm and hot pixels? and if they are different, could somebody explain what they are.

thanks in advance for any help you can provide

and sorry if this should be in the homework section
 
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Never heard of warm pixels - I suppose they could be pixels which are just a bit hot but still have data and so can be calibrated.

Or it could be political correctness, it's unfair to label pixels as hot - they are just 'warm', a bit like being 'visually challeneged' instead of blind
 
thanks :)
 

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