Visible and Infrared Mineralogical Mapping Spectrometer (OMEGA) Stamp Layer

From JMARS Wiki

The OMEGA Stamp Layer will display stamps for all of the observations taken by the Visible and Infrared Mineralogical Mapping Spectrometer (Observatoire pour la Minéralogie, l'Eau, les Glaces et l'Activité) (OMEGA) aboard the European Space Agency's MArs Express orbiter. While the query interface is similar to the THEMIS Stamp Layer, there are some differences which allow users to search for observations by the many parameters associated with OMEGA observations.

[edit] Open the OMEGA Stamp Layer

Open the Stamp Layer: Chose "Add New Layer" -> "Stamps" -> "OMEGA Stamps".

Search Parameter Categories: The search parameters are divided into categories since there are so many of them. Clicking on the down arrow on the right side of the category name will reveal all the search parameters in that category. The categories are:

• Basic Parameters
• Advanced Parameters

NOTE: A search can be done with parameters from multiple categories.

Enter Search Parameters: It is not necessary to enter values for each parameter, but the more specific your search the faster it will be. The allowable values for each field are given in the quick reference table below followed by more detailed descriptions of each search parameter.

Perform Image Search: Clicking OK will make the Stamp Layer perform the search and display the results. Depending on how specific the search parameters are, it may take the Stamp Layer a few minutes to find and create stamps for all of the images. Once the stamps are displayed in the Viewing Window, users can right-click on an outline to view the image in a web browser. (A rendering option is not currently available for OMEGA data.)

OMEGA Search Parameter Glossary

Filter Type

Acceptable Values

Basic Parameters
Image ID(s)	Any Image ID Numbers
Observation Type	MSW - Multispectral Window MSP - Multispectral Survey - Losslessly Compressed MSS - Multispectral Survey - Lossy Compressed TOD - FRT - Full Resolution Targeted Observation HRL - Half-Resolution Long Targeted Observation HRS - Half-Resolution Short Targeted Observation EPF - Blank - All Observation Types
Wavelength	S - Short Sensor L - Long Sensor Blank - All Sensors
Min/Max Longitude	0 - 360 - East Longitude = Positive, West Longitude = Negative Blank - All Longitudes
Min/Max Latitude	90 - -90 - North Latitude = Positive, South Latitude = Negative Blank - All Latitudes

Observation Parameters
Mission Phase	POST-MOI - Post Mars Orbit Insertion PSP - Primary Science Phase Transition - Aerobraking Phase Blank - All Mission Phases
Maximum Resolution	1.0 - 7500.0 Blank - Any Scaled Pixel Width
Map Sacle	0 - 1000 Blank - Any Map Scale
Lines	xxx Blank - Any Lines
Line Samples	xxx Blank - Any Line Samples

Science Parameters
Image ID(s)	Any Image ID Numbers
Min/Max Longitude	0 - 360 - East Longitude = Positive, West Longitude = Negative Blank - All Longitudes
Min/Max Latitude	90 - -90 - North Latitude = Positive, South Latitude = Negative Blank - All Latitudes
Min/Max Orbit	Any Orbit Range Blank - All Orbits

Search Field Descriptions

Image ID

A unique identifier for each image commanded.

Longitude

This is the approximate longitude on the planet Mars of the image center. All values are based on the IAU 2000 aerocentric model of Mars with east positive longitude. (gives in degrees of East Longitude)

Latitude

This is the approximate latitude on the planet Mars of the image center. All values are based on the IAU 2000 aerocentric model of Mars with east positive longitude.

Orbit

Spacecraft orbit during which this image was observed. By definition, orbits begin at the ascending equator crossing of Global Surveyor's polar orbit.

Mission Phase

The Mars Express/HRSC mission has been divided into the following phases:

MC_Phase_0

MC_Phase_1

MC_Phase_2

MC_Phase_3

MC_Phase_4

MC_Phase_5

MC_Phase_6

Maximum Resolution

Map Scale

This is the image resolution in meters per pixel at the center of the image. For most narrow angle images, this value will be approximately the same over the entire picture. For wide angle images, the pixel scale will vary over the image.

Lines

Line Samples

[edit] Stamp Layer Functions

The CRISM Stamp Layer's functions are identical to the functions of the Thermal Emission Image System (THEMIS) Stamp Layer and are explained in detail on its wiki page.