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FORS2 Pipeline:
Recipe for Bias Reduction

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  • recipe name:FORS_BIAS
  • input frames: BIAS
  • associated templates: FORS2_img_cal_bias
purpose: Creates a master bias from a set of bias frames.

description: The master bias is created from a set of raw bias frames, for which the highest and the lowest value for each pixel are rejected and the average of the remaining pixels is computed. The recipe should therefore not be used on fewer than 5 raw bias frames. The overscan regions, if present, are removed from the result. The master frame has 2 extensions, with the actual product being in the first extension and its errors being in the second extension.

At the end, the new master frame is compared with the corresponding certified master frame from the calibration database.

products:

Master PS GIF Header
F2_MBIA_080412A_C1hi_2x2
F2_MBIA_080412A_C2hi_2x2
F2_MBIA_080412A_C1lo_2x2
F2_MBIA_080412A_C2lo_2x2
F2_MBIA_080412A_C1lo_1x1
F2_MBIA_080412A_C2lo_1x1

 


 
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