Pixinsight: Pixel Math combinations

There are many sources available that cover SHO, HOO, and HSO channel combinations within Pixel Math. Some of the combinations have not been created by me, I have only tested these combinations. This is a guide only with examples of my results. This page will be updated as more combinations are used.

This is a small list of simple combinations. Individual results will vary.

Standard SHO

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and, Oiii is 1 hour.

Red > Sii

Green > Ha

Blue > Oiii

SHO variation 1

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

Red > Sii*0.6 + Ha*0.4

Green > Ha*0.7 + Oiii*0.3

Blue > Oiii

SHO variation 2

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

R: (Oiii^~Oiii)*Sii + ~(Oiii^~Oiii)*Ha G: ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii B: Oiii

HSO Variation 3

Performed on data that has been softly stretched. The individual channels have had linear fit, dynamic crop, star alignment and starnett 2 applied. Each channel of SHO is 115 minutes.

Red > Sii*0.8 + Ha*0.2

Green > Ha*0.5 + Oiii*0.5

Blue > Oiii

SHO variation 4

Performed on data that has been softly stretched. The individual channels have had linear fit, dynamic crop, star alignment and starnett 2 applied. Each channel of SHO is 115 minutes.

Red > Sii

Green > Sii*0.5 + Oiii*0.5

Blue > Oiii*.5+Ha*.5

Standard HSO

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

Red > Ha

Green > Sii

Blue > Oiii

HSO variation 1

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

Red > Sii*0.4 + Ha*0.6

Green > Sii*0.7 + Oiii*0.3

Blue > Oiii

Standard HOO

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

Red > Ha

Green > Oiii

Blue > Oiii

HOO variation 1

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

Red > Ha

Green > Oiii*0.8 + Ha*0.2

Blue > Oiii*0.85 + Ha*0.15

HOO variation 2

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

Red > Ha*0.76+Sii*0.24

Green > Oiii

Blue > Oiii*0.85 + Ha*0.15

HOO variation 3

Performed on linear data. After combing the channels, I used Background Neutralization and an STF stretch. No other edits have been made. Ha is 1 hour 40 mins. Sii is 15 mins and Oiii is 1 hour.

R: 1.5 * Ha - Oiii

G: 0.4 * Ha + 0.325 * Oiii

B: Oiii

If you have a combination, feel free to share in the comments section below!

Pixinsight: Pixel Math combinations