It looks like very handy functions.
Could you please give example on how to use them?
When I write this in the “Command line”:
linear_match pp_light_00002.fit 0.0 0.5
all I get is a grey screen. I have AutoStretch activated. Images are 30sec exposure of dark sky and are full of stars.
Output window say this:
00:09:56: Running command: load
00:09:56: Reading FITS: file pp_light_00001.fit, 3 layer(s), 5202x3464 pixels
00:10:02: Running command: linear_match
00:10:02: Reading FITS: file pp_light_00002.fit, 3 layer(s), 5202x3464 pixels
00:10:02: Linear fit functions:
00:10:03: y_0 = 3.567949e-03 + 1.560899e-03x_0 (18019728)
00:10:03: y_0 = 1.546752e-03 + 3.226380e-01x_0 (36039456)
00:10:04: y_0 = 6.493271e-04 + 2.773089e-01*x_0 (54059184)
What does the number tell us?
When I write this:
mtf 0.0 0.01 0.5
My stars gets visible on grey background, even in Linear mode. What exactly happened here? What are the values and what range should they have to produce nice background with stars?