mscblkavg: Block average mosaic exposures with header keyword updating

Package: msctools

Synopsis

This task block averages mosaic exposures by specified block factors. It updates the RDNOISE, GAIN, CCDSUM, DATASEC, BIASSEC, TRIMSEC, and CCDSEC parameters. The output pixel type is the same as the input pixel type. For this reason block averaging of raw unsigned short data may lead to undersampling the noise. The output name maybe the same as the input name to replace the input by the block average output.

Usage

mscblkavg input output nc nl

Parameters

Description

Examples

1. Block average a set exposures.

cl> mscblkavg obj*fits bav//obj*fits 2 2

2. Block average in place a set of exposures.

cl> mscblkavg obj*fits obj*fits 2 2

Revisions

MSCBLKAVG: First release in MSCRED V2.0.