Home

User Documentation

Getting Started
Learn More
Explore in Detail
Get Inspired

Contributor Documentation

Getting Started
Learn More
Explore in Detail
Get Inspired

Quick Links

Software Manual
AstroDiscuss
GitHub
API Reference

Documentation Versions

ISIS 2

Documentation
Tutorials
Technical Documents
USGS

ISIS Application Documentation

thmvisflat

Printer Friendly View | TOC | Home

This program applies a flat field correction to Themis VIS Images

Overview Parameters Example 1

Description

This program applies a flat-field correction for each framelet based on the band's filter number

Categories

History

Steven Lambright2008-06-13 Original version

Parameter Groups

Files

Name Description
FROM Input Themis VIS image
TO Output Themis VIS Imagw
X

Files: FROM

Description

This is the non-flat-field corrected, unprojected themis cube

Type cube
File Mode input
Filter *.cub
Close Window
X

Files: TO

Description

This is the flat-field corrected themis cube

Type cube
File Mode output
Pixel Type real
Filter *.cub
Close Window

Example 1

Running this program on a themis vis image

Description

This program applies a flat-field correction to the input Themis Vis image

Command Line

thmvisflat from=V04860003EDR.even.cub to=V04860003EDR.even.flat.cub
This applies a flat-field correction to the V04860003EDR.even.cub themis vis cube

Input Image

Raw Data

Input Cube Data

This is the raw input data; notice the bottom of each framelet is darker than the rest (fades to black). This is a consistent problem with the camera.

Output Image

Corrected Output

The corrected image

This is the output from this program; notice each framelet ends sharply now. Other minor corrections exist, but the most noticable correction is data from the darker area is brightened.