Settings for Linear Fit Clipping

[jerryyyyy]

Hi,

Have been getting into the details  of integrating some of my O-III images and have been reading on Linear Fit Low and High.  The defaults are 5.0 and 2.5 respectively.  I have fooled with these bit because my O-III images have a certain amount of "salt and pepper" to then in the Cocoon Nebula.  This gets better with more subs, but not clear if I might optimize these settings somewhat. 

PS the combination should be "average", right. 

[Ignacio]

My understanding is that you have to crank the values as high as possible, as long as you get rid of "all" the outliers (hot and cold pixels, sat trails, etc.).

I typically use 7 sigma low and 5 sigma high, with about 30 frames, to achieve this.

hope it helps,
Ignacio

[jerryyyyy]

My understanding is that you have to crank the values as high as possible, as long as you get rid of "all" the outliers (hot and cold pixels, sat trails, etc.).

I typically use 7 sigma low and 5 sigma high, with about 30 frames, to achieve this.

hope it helps,
Ignacio

Thanks, I'll try these with the subs from last night.  Finally some really crisp skys in california last night. 

PS  Turned out much better...