Optimal Image Subtraction (OIS)¶
OIS is a Python package and a C command-line program to perform optimal image subtraction on astronomical images.
It offers different methods to subtract images:
- Modulated multi-Gaussian kernel (as described in [alard1998])
- Delta basis kernel (as described in [bramich2008])
- Adaptive Delta Basis kernel (as described in [miller2008])
Main features:
- Each method can (optionally) simultaneously fit and remove common background.
- Each method can resolve small translations on the image
- Adaptive Bramich can resolve small relative rotations on the images
(See Methods)