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Old 21-11-2018, 10:20 AM
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avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
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Quote:
Originally Posted by RickS View Post
Hi Bert,

Would your subs be read noise limited if they were unbinned?

Have you measured how much read noise advantage you get from binning the PL16803? In the case of my U16M (also a KAF-16803 sensor) the read noise in a 2x2 binned pixel is not much less than four times the read noise in a single pixel. I have heard similar comments about KAF sensors in general from other folks who have done the measurements.

There are disadvantages to binning then drizzling so I'd be interested to know if you did an analysis to show that it was worthwhile.

Cheers,
Rick.
To get the same sort of signal to noise at full resolution I needed at least fifty images for the dim stuff.

I have done the experiment and compared images. Binning and drizzling wins.

I must admit I am getting better at using PixInsight so it could be an aberration.

So I went back to some previous data and reprocessed it using the new protocols.

I have not measured the gain in signal to noise by binning by any objective means apart from image quality and it works.

I have decided to use my laboratory quality power supply to feed my camera as the supplied switch mode power supply has died.

I worked out what pins go where and am in the process of making up a lead.

It may not make a difference. Time will tell.

There is only one absolute in science and it is signal to noise ratio.

Bert
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