OPTGAM -- optimises systemic velocity of system. After you have iterated close to the final image you can use optgam to find the best gamma velocity by chi**2 minimisation in 1D. The revised value is stored in the image which is otherwise unchanged. You should re-iterate the image and in general a couple of times round the cycle are needed. FIGARO parameters: IMAGE -- Input image file to load DATA -- Data file containing data and errors used to generate IMAGE STEP -- Initial step size to take (km/s) DELTA -- Accuracy wanted in final answer (km/s)
This command belongs to the classes: