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Good question.

A BPM will never over/under correct due to how it intrinsically works.

Bad Pixels behave differently than the linear pixels. The BPM correction does not do a subtract/divide on the pixel, so it can’t overcorrect the value of the pixel.

The BPM correction simply will perform a data interpolation of the Bad pixel using the…[Read more]

Ok good to know. I was just wondering if you aren’t introducing hot pixels which only appear or are prominent at high temperatures, and if so, if this wouldn’t overly correct the 0-10 oC images.

Thanks for the heads up, I’ll make a new BPM, for now I’m using darks I made outside during the night.

The oven is a bit overdone I think…

If you make a BPM just do it inside with the sensor at room temperatures. Then you’ll need lesser darks for better statistics. This is just how the sensors work, so it has nothing to do with how I implemented this ;-)

Making it at 20 degrees Celcius or hotter will be more efficient than 0-10 degrees Celcius…[Read more]

Hi Roberto, It’s fixed now.

Within a couple of hours I’ll be uploading a new version with a fix for this ;-)

Yes, there’s the “/” in my FIT header.

Cheers

Yes as hot as possible. 🙂 (as an example of the theory ofcourse)

In the oven???

Hi Roberto,

André experienced this as well yesterday with data of a qsi camera, the problem is a forward slash /  in the instrument name in het fits header. Do you have this as well? if not, please send me one of the files, so I can fix it. (wetransfer using my e-mail or dropbox using my email is also okay ;-) )

“INSTRUME= ‘QSI 583ws S/N 0…[Read more]