PixInsight - Master Calibration Files

Master Bias and  Dark Generation with FBPP

updated: 2025-10-24

Purpose

The  Fast Batch Preprocessing (FBPP) script is used to generate the Bias Frames and the Master Dark frames.
The settings to generate Master Dark or Master Bias Frames are identical. 

Activation

Process 🡺 All Processes 🡺 Image Integration

Input

Dark and Bias calibration frames (as RAW or linear images)

Output

Master Dark and Bias frames (like masterDark_BIN-1_6246x4170_EXPOSURE-30.00s)

Previous Step

Capturing Calibration Frames using the ASIAIR

Next Step

Master Flats Generation with FBPP

Resource(s)


Step

Description

Master Bias or Dark Frames

1

Open the Fast Batch Preprocessing (FBPP) script

and clear all old Bias,  Darks, Flats and Lights files


2

Click on the Bais or Darks tab and add your Darks files

3

Global Settings

  • use these options to generate the Bias or Darks

4

Post Calibration Options

  • use these options to generate the Bias or Darks files

5

Set the Output Directory

6

Run the Integration

Click on Run

7

Move the master calibration file to the final destination folder 

8

Rename the Master file according to the Master File Naming Convention

Bias File Name Examples: 

MasterBias_Stack50_1.0ms_Bin1_6200MM_gain100_20250219_-10C.xisf
masterBias_BIN-1_6246x4170_FUJXT3_ISO3200_20251015.xisf


Darks File Name Examples: 

MasterDark_Stack20_180.0s_Bin1_2600MC_gain100_20250305_-10.0C.xisf

masterDark_BIN-1_6246x4170_EXPOSURE-30.00s_FUJXT3_ISO800-30s.xisf

9

Result Example

******************** MASTER BIAS GENERATION ********************

Group of 20 Bias frames (20 active)

SIZE  : 6246x4170

BINNING  : 1

Keywords : []

Mode     : calibration


Rejection method auto-selected: Winsorized Sigma Clipping

Integration completed: master Bias saved at path F:/FotosLibrary/_Astro/_Calibrations/FUJXT3 Calibration/Bias/Bias/Work/master/masterBias_BIN-1_6246x4170.xisf

****************************************************************

9

Next Step: Master Flat Generation




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