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SubframeSelector Weighting Tool (SWT), v 1.0.0

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#1 Aworonow

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Posted 22 June 2020 - 07:49 AM

This document describes a user-friendly spreadsheet designed to assist in the comprehensive, methodical assignment of relative weights to subframes. The tool, named the “SubframeSelector Weighting Tool” (SWT), interacts with PixInsight’s SubframeSelector script, serving both as the source of its inputs and as the recipient of its weighting-equation output. We explain the rationale for the approach implemented within SWT and the procedural steps required to generate its weighting-equation output.

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#2 ks__observer

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Posted 10 July 2020 - 04:42 AM

I have been trying to understand image weighting.

"Weighting" is supposed to weigh the strong images more than weak images.

But you lose SNR by weighting down some images.

I don't see any control for how much weight you will assign the lower quality subs -- though it looks  like  that is what your spreadsheet is designed to do.

I wish there was some scale you could move with a mouse and see real time preview as to effect.

I always use weight = 0 because i think you lose SNR using weights.




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