Sorting image list with values on a column

Hi Donghun,

Thank you for this suggestion 😉 I will add this to the sorting possibilities that you can select in the 1)LOAD menu. Okay?

And I will add the possibility to have both ascending/descending as a choice.

Kind regards,

Mabula

Hi Mabula

Yes that works.

If APP sorts the list when you click the column (first ascending and the second click descending), it would be ideal but the load menu way will work as well.

Thank you very much.

Donghun

Hi Mabula,

I'm used working with PixInsight and the request Dong Hun made is a kind of mixture between PI's process "blink" where I was able to load a list of images and could play them one-by-one or as in a kind of movie. I used this process a lot to pre-select my light frames in order to reject the ones with bad guiding or incoming dawn when the signal was fading into the upcoming daylight. There's also another script called "subframe selector". With this script I could sort out the frames on FWHM value, SNR etc. It would really be nice when you could make something like this -a kind of best-of-both- 

Keep up the good work! regards, Jeroen

Thank you Jeroen for your contribution 😉

The frame list panel should indeed help in sub frame selection.

I intend to create sorting of the frame list on

• star density, helps you filtering subs due to bad atmospheric conditions (tranparancy) on a image scale indepent way
• noise, APP calculates noise after having normalised the frame, so this is a normalised noise value 😉 see note below
• relative FWHM, helps you select the best frames relative to the image scale of the reference after registration. You need this when you combine data of different focal lengths and/or image scales

Furthermore in 6) INTEGRATE, we have the "lights to stack" slider. This uses the values in the quality colomn. It will be usefull if the values in the quality column dynamically adjust for the integration weights that you use. So if you set the weights at "star shape". Then the "lights to stack" slider will enable you to directly filter on the sharpest and roundest stars 😉

Mabula

note on normalised noise: this is much better than sub selection on noise on frames before normalization. Noise is by no means an absolute value to be compared without normalization!

(If I were to divide data by 2, then the noise drops by the same factor, differences in flat calibration between different applications, for instance, will create different noise value outcomes.. This mistake is made a lot actually... comparing frames using only a noise estimate without normalizing the frames really has no meaningfull value.)