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jumpjack authored Nov 14, 2024
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These acronyms are used in filenames to distinguish products, i.e. type of contents of the files, which always have extension ".IMG"; for MER missions, the filename has this structure:

![image](https://github.com/user-attachments/assets/f77f2ead-1cb8-4c26-954d-790b363c4f16)

| Element | Offset | Length | Description |
|---------|--------|--------|----------------------------------------------------------------------------------------------|
| scid | 1 | 1 | (1 integer) MER rover Spacecraft Identifier. |
| inst | 2 | 1 | (1 alpha character) MER science instrument identifier |
| sclk | 3 | 9 | (9 integers) Starting Spacecraft Clock time. |
| prod | 12 | 3 | (3 alpha characters) Product Type identifier of input data |
| site | 15 | 2 | (2 alphanumeric) Site location count |
| pos | 17 | 2 | (2 alphanumeric) Position-within-Site count |
| seq | 19 | 5 | (1 alpha character plus 4 integers) Sequence identifier. |
| eye | 24 | 1 | (1 alpha character) Camera eye (Left/Right) |
| flt | 25 | 1 | (1 alphanumeric) Spectral filter position. Valid values are an integer range of 0-8 |
| who | 26 | 1 | (1 alpha character) Product Creator indicator (“M” - MIPL (OPGS) at JPL) |
| ver | 27 | 1 | (1 alphanumeric) Version identifier |
| . | 28 | 1 | "." separator character |
| ext | 29 | 3 | (4 alpha characters) 3-character PDS product type extension following a "." character. |

- scid: Opportunity = 1, Spirit = 2
- inst:
- “P” - Panoramic camera
- “N” - Navigation camera
- “F” - Front Hazard Avoidance Camera
- “R” - Rear Hazard Avoidance Camera
- “M” - Microscopic Imager
- “E” - Descent camera

- prod: see table of products below
- site: position (site) in [traverse map](https://github.com/jumpjack/VST-converter/blob/main/MERA-MER2-Spirit_traverse_path.csv) ;
total sites for Spirit: 138; from site 137 it is visible the final resting position in Troy, i.e. site 138; site 137 is also
visible from above from site 132 (Sols 1363-1371 (see tab "map" in [notebook](https://an.rsl.wustl.edu/mera/AN/an3.aspx?)))

**Products table**

| Data Product Description | Non-linearized (NOMINAL) | Linearized |
|---------------------------------------------------------------------------------------------------------------------------|--------------------------|------------|
| Full frame EDR | EFF | n/a |
| Sub-frame EDR | ESF | n/a |
| Downsampled EDR | EDN | n/a |
| Thumbnail EDR | ETH | n/a |
| Row Summed EDR | ERS | n/a |
| Column Summed EDR | ECS | n/a |
| Reference Pixels EDR | ERP | n/a |
| Histogram EDR | EHG | n/a |
| Inverse LUT RDR | ILF | FFL |
| Inverse LUT RDR (Sub-frame) | ISF | SFL |
| Inverse LUT RDR (Downsampled) | INN | DNL |
| Inverse LUT RDR (Thumbnail) | ITH | THN |
| Radiometrically-corrected RDR calibrated to absolute radiance units | RAD | RAL |
| Radiometrically-corrected RDR calibrated to absolute radiance units (Thumbnail) | RAT | RAN |
| MIPLRAD Radiometrically-corrected RDR calibrated to absolute radiance units, specific to archived datasets only | MRD | MRL |
| MIPLRAD Radiometrically-corrected RDR calibrated to absolute radiance units, specific to archived datasets only (Thumbnail)| MRT | MRN |
| Rad-corrected Float (32-bit) RDR | RFD | RFL |
| Rad-corrected Float (32-bit) RDR (Thumbnail) | RFT | RFN |
| Radiometrically-corrected RDR calibrated to I/F radiance factor | IOF | IOL |
| Radiometrically-corrected RDR calibrated to I/F radiance factor (Thumbnail) | IOT | ION |
| Rad-corrected Float (32-bit) RDR calibrated to I/F radiance factor | IFF | IFL |
| Rad-corrected Float (32-bit) RDR calibrated to I/F radiance factor (Thumbnail) | IFT | IFN |
| Sum of Rad-corrected Float (32-bit) RDR calibrated to I/F radiance factor, produced by MI Athena team | IFS | n/a |
| Radiometrically-corrected RDR calibrated for instrument effects only, in DN | CCD | CCL |
| Radiometrically-corrected RDR calibrated for instrument effects only, in DN (Thumbnail) | CCT | CCN |
| Rad-corrected Float (32-bit) RDR calibrated for instrument effects only, in DN | CFD | CFL |
| Rad-corrected Float (32-bit) RDR calibrated for instrument effects only, in DN (Thumbnail) | CFT | CFN |
| Disparity RDR | DIS | DIL |
| Disparity RDR (Thumbnail) | DIT | DIN |
| Disparity of Samples RDR | DSS | DSL |
| Disparity of Samples RDR (Thumbnail) | DST | DSN |
| Disparity of Lines RDR | DLS | DLL |
| Disparity of Lines RDR (Thumbnail) | DLT | DLN |
| XYZ RDR | XYZ | XYL |
| XYZ RDR (Thumbnail) | XYT | XYN |
| XYZ Rover Vol Exclusion Mask RDR | MSK | MSL |
| XYZ Rover Vol Exclusion Mask RDR (Thumbnail) | MST | MSN |
| X Component RDR | XXX | XXL |
| X Component RDR (Thumbnail) | XXT | XXN |
| Y Component RDR | YYY | YYL |
| Y Component RDR (Thumbnail) | YYT | YYN |
| Z Component RDR | ZZZ | ZZL |
| Z Component RDR (Thumbnail) | ZZT | ZZN |
| Z Component RDR, produced by Athena MI team as Digital Elevation Model (DEM) | DEM | n/a |
| Range (Distance) RDR | RNG | RNL |
| Range (Distance) RDR (Thumbnail) | RNT | RNN |
| UVW (XYZ) Surface Normal RDR | UVW | UVL |
| UVW (XYZ) Surface Normal RDR (Thumbnail) | UVT | UVN |
| U (X) Surface Normal RDR | UUU | UUL |
| U (X) Surface Normal RDR (Thumbnail) | UUT | UUN |
| V (Y) Surface Normal RDR | VVV | VVL |
| V (Y) Surface Normal RDR (Thumbnail) | VVT | VVN |
| W (Z) Surface Normal RDR | WWW | WWL |
| W (Z) Surface Normal RDR (Thumbnail) | WWT | WWN |
| Surface Roughness RDR | RUF | RUL |
| Surface Roughness RDR (Thumbnail) | RUT | RUN |
| Slope RDR | SLP | SLL |
| Slope RDR (Thumbnail) | SLT | SLN |
| Slope Rover Direction RDR | SRD | SRL |
| Slope Rover Direction RDR (Thumbnail) | SRT | SRN |
| Slope Heading RDR | SHP | SHL |
| Slope Heading RDR (Thumbnail) | SHT | SHN |
| Slope Magnitude RDR | SMP | SML |
| Slope Magnitude RDR (Thumbnail) | SMT | SMN |
| Solar Energy Product RDR | SEP | SEL |
| Solar Energy Product RDR (Thumbnail) | SET | SEN |
| IDD Reachability RDR | IDD | IDL |
| IDD Reachability RDR (Thumbnail) | IDT | IDN |
| VISTA Terrain RDR | VIS | VIL |
| VISTA Terrain RDR (Thumbnail) | VIT | VIN |
| ASD Terrain RDR | ASD | ASL |
| ASD Terrain RDR (Thumbnail) | AST | ASN |


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