3.1.1 Target Descriptions
The Fixed Targets form is used to specify fixed targets in some HST observations. This article provides a list of target descriptions for the Astronomer's Proposal Tool (APT). |
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Format definitions
Boldface type indicates the name of an APT parameter or a value for a parameter.
Black text indicates an important note.
Magenta text indicates available but unsupported parameters (requires prior approval from STScI).
Red text indicates restricted parameters (for STScI use only).
Brown text indicates text file parameters.
Items in brackets - <value> - are required values.
Items in square brackets - [<value>] - are optional.
Target Descriptions for the Astronomer's Proposal Tool (APT)
Table 3.5: Descriptive Keywords for Solar System
| Descriptive Keywords for Solar System | |
|---|---|
| Planet | Feature |
| Dwarf-Planet | Offset |
| Satellite | Ring |
| Comet | Torus |
| Asteroid | Other |
Table 3.6: Descriptive Keywords for STAR and EXT-STAR
| Descriptive Keywords for STAR and EXT-STAR | ||
|---|---|---|
Brown Dwarf | F0-F2 | Herbig Ae/Be |
Wolf Rayet | F3-F9 | Horizontal Branch Star |
Wolf Rayet – WC | FP | Interacting Binary |
Wolf Rayet – WN | Late-type Degenerate | X-ray Novae |
Main Sequence O | G V-IV | X-ray Burster |
Giant O | G III-I | X-ray Transient |
Supergiant O | K V-IV | LMXB (Low Mass X-ray Binary) |
OE | K III-I | Gamma Ray Burster |
OF | M V-IV | MXB (Massive X-ray Binary) |
SDO | M III-I | RS CVn Star |
WDO | L | W UMa Star |
B0-B2 V-IV | T | Beta Lyrae Star |
B3-B5 V-IV | S Star | Algol System |
B6-B9.5 V-IV | Carbon Star | Barium Star |
B0-B2 III-I | Long Period Variable | Blue Straggler |
B3-B5 III-I | Irregular Variable | Neutron Star |
B6-B9.5 III-I | Regular Variable | Pulsar |
BE | Luminous Blue Variable | Binary Pulsar |
BP | Dwarf Nova | FK Comae Star |
SDB | Classical Nova | Pulsating Variable |
DB | Nova-like | PG1159 Star |
DA | Recurrent Nova | ZZ Ceti Star |
DC | Polar (AM Her Star) | Cepheid |
DZ | Intermediate Polar (DQ Her Star) | Supernova |
A0-A3 V-IV | Symbiotic Star | Supernova Type Ia |
A4-A9 V-IV | T Tauri Star | Supernova Type Ib |
A0-A3 III-I | FU Orionis Star | Supernova Type II |
A4-A9 III-I | Shell Star | RR Lyrae Star |
AE | Eta Carinae Star | Planetary Nebula Central Star |
AM | YSO | Emission Line Star |
AP | Extra-solar Planet | Circumstellar Matter |
AGB Star | Extra-solar Planetary System | Population II |
Post-AGB Star | Pre-main sequence Star | |
Composite Spectral Type | Low Mass Companion | |
Table 3.7: Descriptive Keywords for STELLAR CLUSTER and EXT-CLUSTER
| Descriptive Keywords for STELLAR CLUSTER and EXT-CLUSTER | |
|---|---|
| Globular Cluster | OB Association |
| Open Cluster | T Association |
Young Association | |
Table 3.8: Descriptive Keywords for GALAXY
| Descriptive Keywords for GALAXY | |
|---|---|
| Spiral (Spiral Galaxy) | Quasar (Radio Loud) |
| Lenticular (Lenticular Galaxy) | Radio Galaxy |
| Elliptical (Elliptical Galaxy; Not A Dwarf Elliptical) | BL Lac (BL Lac or BLAZAR) |
| Dwarf Elliptical | Liner |
| Magellanic Irregular | Starburst |
| Amorphous Irregular | Ultraluminous IR Gal |
| Dwarf Compact (Dwarf Compact/HII Galaxy) | Interacting Galaxy |
| Dwarf Spheroidal | Lyman Alpha Cloud |
| BCM (Brightest Cluster Member) | Protogalaxy |
| BGM (Brightest Group Member) | Einstein Ring |
| LSB (Low Surface Brightness/HI Rich Galaxy) | High Redshift Galaxy (z > 0.5) |
| Seyfert | |
QSO (Radio Quiet) | |
Table 3.9: Descriptive Keywords for CLUSTER OF GALAXIES
| Descriptive Keywords for CLUSTER OF GALAXIES | |
|---|---|
| Supercluster | Interacting Galaxy |
| Void | BCM (Brightest Cluster Member) |
| Group | BGM (Brightest Group Member) |
Rich Cluster | Einstein Ring |
| Poor Cluster | Blank Sky |
| High Redshift Cluster (z > 0.5) | |
| Galaxy Pair | |
Table 3.10: Descriptive Keywords for ISM and EXT-MEDIUM
| Descriptive Keywords for ISM and EXT-MEDIUM | |
|---|---|
| Herbig-Haro Object | Cometary Nebula |
| Planetary Nebula | Molecular Cloud |
| HII Region | Bipolar Outflow |
| Reflection Nebula | Absorption Line System |
| Dark Cloud | Absorption Line System – Galactic |
| SNR (Supernova Remnant) | Absorption Line System – Extragalactic |
| Ring Nebula | Damped Lyman Alpha Cloud (Extragalactic) |
| HI Cloud | Coronal Gas (105–106 K) |
| High Velocity Cloud | Hot Gas (107–108 K) |
| Intermediate Velocity Cloud | IGM |
| IRAS Cirrus | ICM |
PDR (Photon Dominated Region) | |
Table 3.11: Descriptive Keywords for UNIDENTIFIED
| Descriptive Keywords for UNIDENTIFIED | |||
|---|---|---|---|
| Radio Emitter | Ultraviolet Emitter | Blank Field | Low Latitude Field |
| Infrared Emitter | X-ray Emitter | Parallel Field | |
| Optical Emitter | Gamma Ray Emitter | High Latitude Field | |
Table 3.12: Descriptive Keywords for CALIBRATION
| Descriptive Keywords for CALIBRATION | ||
|---|---|---|
| Astrometric | Narrow Band Filter Calibration | Target Acquisition Test |
| Photometric | FGS Stability | Detector Sensitivity Test |
| Wavelength | Quantum Efficiency Test | Focus Test |
| Point Spread Function | Pointing and Jitter Test | Spacecraft Glow |
| Occulting Finger Location | Raster & Step/Dwell Scan Verification | Occultation Mode Test |
| Ion | Spatial Distortion Test | Throughput Test |
| Taled | Polarimetry | Echelle Blaze Function |
| Scattered Light Test | Aperture Location | Virtual Pointing |
| Sky Background | Detector Linearity Test | FGS Transfer Function Test |
| Instrument Sensitivity Test | Carrousel Stability Test | Shutter Control Test |
Table 3.13: Discrete Features and Descriptors for All Categories
| Discrete Features and Descriptors for All Categories | ||
|---|---|---|
| Corona | Disk | BLR (Broad Line Region) |
| Ring | Bulge | NLR (Narrow Line Region) |
| Ansae | Polar Ring | Filament |
| Protoplanetary Disk | Dust Lane | Ejecta |
| Wind | Spiral Arm | Knot |
| Accretion Disk | Shell | Star Forming Region |
| Jet | Tidal Tail | Shock Front |
| Lobe | Bar | Ionization Front |
| Hotspot | Multiple Nuclei | Conduction Front |
| Nucleus | Cooling Flow | Undesignated |
| Halo | Emission Line Nebula | Gravitational Lens |