Data Format

The data obtained with Tomo-e Gozen are processed differently for different purposes. Currently there are six data types as follows:

1. RAW data (TOMOE-IMAGE-RAW)
2. Image Cube (TOMOE-IMAGE-CUBE)
3. Dark Frame (TOMOE-IMAGE-DARK)
4. Flat Frame (TOMOE-IMAGE-FLAT)
5. Stacked Image (TOMOE-IMAGE-STACK)
6. NEO Data Unit (TOMOE-COLLECTION-NEO)

RAW data is close to the original output of the Tomo-e Gozen camera system, where dark subtraction and flat-field correction are not applied yet. Image Cube is a three-dimensional video frame after dark-current subtraction and flat-field correction. Dark Frame is a calibration frame for dark current. Flat Frame is another calibration frame for flat-field correction. Stacked Image is a two-dimensional image created from a three-dimensional video frame. Information of moving objects in a video frame is compiled in NEO data unit.

Details of each data type are described in the following subsections.