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ESP -- Extended Surface Photometry
Version 0.11-4 User's Manual

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ELLPRO: Galaxy profiling.

Starlink User Note180.5
Norman Gray
Mark Taylor
Grant Privett
30 September 2008

CCLRC / Rutherford Appleton Laboratory
Particle Physics & Astronomy Research Council

Starlink Project

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Abstract
Introduction
- An overview
- What's new in this release
- A little more detail
Installing ESP
Starting up ESP
Simple ESP Sessions
- Getting Help
- Session 1 -- Getting image statistics
- Session 2 -- Interactive profiling by intensity analysis
- Session 3 -- File based profiling by intensity analysis
- Session 4 -- Obtaining galaxy pieslice cross-section
- Session 5 -- Examining profiling results
- Session 6 -- Looking at the image background variation
- Session 7 -- Interactively obtaining 2-D Gaussian source profiles
  - GAUFIT: original fitting algorithm
  - GAUFIT: least-square fits
Deriving accurate background values
- Global background value determination
- Local background value determination
Removing image contamination
- Removing consistent image faults
- Removing other image contamination
Removing cosmic rays and bright regions
Examining image flatness
Highlighting faint diffuse objects
- Self-correlation
- Cross-correlation
- Hybrid cross/self-correlation
Obtaining galaxy cross-sections
Profiling galaxies using intensity analysis
Profiling galaxies using contour analysis
Choosing between ELLPRO and ELLFOU
- Limitations of ELLPRO and ELLFOU
Displaying the profiling results
Output file formats
Incorporating HISTPEAK into your own ADAM applications
Acknowledgements
Alphabetical list of ESP routines.
Description of the ESP routines
- Complete routine descriptions
- CORR-Performs cross-correlations on an image using a galaxy template
- ELLFOU-Ellipse fitting galaxy profiles using contour analysis
- ELLPRO-Performs an ellipse fitting galaxy profile using simple intensity analysis
- FASTMED-Applies a square median filter of user defined size to an input image
- GAUFIT-Performs a 2-D Gaussian fit of multiple sources
- GRAPHS-Displays/analyses the results generated using SECTOR, ELLFOU or ELLPRO
- HISTPEAK-Establish the mean, mode, median and other statistics for NDF image files
- HSUB-A subroutine version of HISTPEAK for developers
- LOBACK-Establishes the local mode values for parts of an image
- MASK-Uses an ARD file to set some pixels of a given image to bad
- MIXUP-To mixup the position of all the pixels in an image
- SECTOR-May be used to display the average pixel values within a wedge shaped sector/slice of the image
- SELFC-To perform self-correlations on an NDF image file
- SELFCW-To perform mixed cross-self-correlations on an NDF image file
- SKEW-Generates a skewness representation of the image
- TOPPED-Remove all pixel values above a certain limit from an NDF image file
Bad data masks (ARD)
- Detailed description of ARD files
Supported HDS Data Types
Position angle convention
Examples of output file formats and glossary
Backpage alphabetical listing
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Next: Abstract

ESP -- Extended Surface Photometry Version 0.11-4 User's Manual

CCLRC / Rutherford Appleton Laboratory Particle Physics & Astronomy Research Council

Starlink Project

Contents

ESP -- Extended Surface Photometry
Version 0.11-4 User's Manual

CCLRC / Rutherford Appleton Laboratory
Particle Physics & Astronomy Research Council