Calibration Menu


The Calibration menu contains commands related to calibrating images. Several of these commands are also displayed on the Calibration Tools Toolbar. Commands that require a displayed image or an image set may not be available and will appear grayed out as shown below.

Calibration Menu Commands

Express Image Calibration

Applies several types of bias, dark, flat field, and cosmetic corrections to images.

Create Master Bias

Combines many Bias frames to create a master bias frame for removing the electronic offset of the sensor.

Create Master Dark

Combines many dark frames to create a master dark frame for removing the thermal signature from images.

Create Master Flat

Combines many flat field frames to create one or more master flats for correcting both illumination and wavelength-dependent sensitivity variations across the sensor.

Create Illumination Flat

Combines many flat field frames to create one or more reference flats for correcting illumination variations across the sensor.

Create Pixel Flat

Combines many flat field frames for correcting wavelength-dependent sensitivity variations across the sensor.

Combine Image Set

Combines a displayed image set into a single image using a variety of combining methods and parameters.

This command is available only for an Image Window displaying an image set of more than 1 image.

Combine Files

Combines many files into a single image using a variety of combining methods and parameters.

Create Pixel Mask

Scans an image for high or low pixel values to save as a "pixel mask". The pixel mask contains the coordinates of bright or dark artefacts. These artefacts are corrected by using the mask in the Apply Pixel Mask command.

Edit Pixel Mask

Edits a pixel mask or creates a new pixel mask containing the locations of bright or dark point source image artefacts. These artefacts are corrected by using the mask in the Apply Pixel Mask command.

Apply Pixel Mask

Apples a pixel mask to correct point artefacts in an image.

Edit Blemish Mask

Edits a blemish mask or creates a new blemish mask containing the description of image artefacts. These artefacts are corrected by using the mask in the Apply Blemish Mask command.

Apply Blemish Mask

Apples a blemish mask to correct extended artefacts in an image.

Interactive Repair

Opens (or closes) theInteractive Repair command toolbar for removing artefacts by clicking on them.

This interactive command is available only for an Image Window displaying an image.

Clean Image Set

Cleans transient point artefacts that do not repeat among the images of an image set.

This command is available only for an Image Window displaying an image set of more than 1 image.

Modify Keywords

Changes the values of image header keywords, adds new keywords and values, or renames keywords already present in the image header.

Trim Image Section

Crops an image using the region description stored in a trim section type keyword in the image header.

Related Topics

Contents, Repairing Artefacts and Cosmetic Defects, Calibration Tools Toolbar