preprocessing error

Software Siril
1

Hello everybody, I am just starting with Siril and trying to process for the first time, when trying to pre-process the lights manually, every time I have this error message: 15:01:58: Sequence processing succeeded.
15:01:58: Execution time: 2.23 s.
15:01:59: Reading FITS: file pp_light_00001.fit, 3 layer(s), 1390x1038 pixels
15:01:59: Sequence loaded: pp_light_ (1->41)
15:01:59: Closing sequence light_
15:01:59: Error: statistics computation failed.

I wonder what is happening, please help!

2

My bet your images are totally black, with no signal anymore because you subtract biases twice.

3

Thanks for your help, I am applying darks and flats, I wonder if this is the problem, any other comment will be greatly appreciated

4

Check that your light_00001.fit and pp_light_00001.fit images look normal. You can also check that the median of the master dark is not higher than the median of the light_00001.fit image, using the statistics tool in image information submenu from the triple bar menu at the top right.

5

Hi, I checked and the light_00001.fit is OK, the pp_light_00001.fit is black, I followed every step but is no working, no matter what lights i use.

Thank you so much and think I need some help
Regards

6

Check the statistics as suggested by Vincent.

7

thanks for your message, I checked the statistics and the screen shows
mean=-50721.9
median=-61858.3
sigma=21575.6
MAD=1510.1
sgrt(BWMV)=1887.6
mim=-65201.2
max=0

everthing was sustracted as Vincent stated but how to fix it? I followed every step of BorealisLite Manual full process, and everytime is the same.again thank you so much for your help!!!

8

I would like to see comparison of
Light stats / dark stats.

If dark median is higher (or equal) to the median light then you can’t do nothing with your darks.

9

Hello, you are absolutely right I need to take another set of darks, thank you so much very helpful your hint