ermask for large areas
Posted: Sun May 19, 2024 6:16 pm
Hello,
Reading the documentation of the ermark routine, it's not clear
1. what is the default values for threshold1 and threashold2 parameters
2. why "Valid pixels need to have at leas 10% of the maximum exposure"
In the figure below, I show the exposure map of a big (~3deg radius) region of the sky in which the exposure is highly uneven, which results in the exclusion of the majority of the region using detmask.
I tried to lower threashod1 to anything <10% but it gives an error:
I need this to run erbox afterwards as detmask seems to be a required entry (I tried setting detmask_flag="N" but it complains with "No detection mask for exposure").
Thanks
Reading the documentation of the ermark routine, it's not clear
1. what is the default values for threshold1 and threashold2 parameters
2. why "Valid pixels need to have at leas 10% of the maximum exposure"
In the figure below, I show the exposure map of a big (~3deg radius) region of the sky in which the exposure is highly uneven, which results in the exclusion of the majority of the region using detmask.
I tried to lower threashod1 to anything <10% but it gives an error:
Code: Select all
ermask: 1.7.1 eSASS4DR1 feb 01 15:54:43 2024
ermask/fput_i1image: **ERROR3** Error creating FITS file
ermask: FAILED
Thanks