Processing math: 100%

SKY_FLAT_FP

Creates and files a flat field derived from multiples of four frames using object masking to reduce artifacts

Description:

This recipe make a sky flat for UFTI from a series of four (or multiples of four) sky or object frames combined using one of a selection of statistics. It is intended to be used to make a flat for Fabry-Perot data.

It performs a null debiassing, bad-pixel and non-signal region masking, and dark subtraction before combining the sky frames pixel by pixel to make the flat. See the “Notes” for further details. The parameters of the flat are filed in the index of flats for future selection and use of the flat.

For best results the field observed should contain few stars and no bright ones.

Notes:

Output Data

Parameters:

USEVAR = LOGICAL
Whether or not to create and propagate variance arrays. [0]

Related Recipes

SKY_FLAT, SKY_FLAT_MASKED.

Implementation Status: