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Space Telescope Science Institute |
Cycle 21 Phase II Proposal Instructions |
help@stsci.edu |
If you are using the Text Proposal File, all target numbers and names within a proposal must be unique.
• A new target name must be defined for each (celestial) target. For example, for several pointings within a galaxy, one might define target names such as NGC4486-NUC, NGC4486-JET, NGC4486-POS1, and NGC4486-POS2.
• No blanks are permitted in target names. Blanks between a letter and a numeral must be suppressed (e.g., HD140283, NGC4378), but a hyphen (and not an underscore) must replace blanks between two letters or two numerals (e.g., ALPHA-CEN, NGC224-0040+4058). Also, a hyphen should be used where required for clarity (e.g., NGC4486-POS1).
• Only letters, numerals, hyphens, periods (.), and + or – are allowed in target names; other punctuation is not permitted (e.g., BARNARDS-STAR is valid, but BARNARD’S-STAR is not). Greek letters must be spelled out (e.g., ALPHA-ORI). Letters may be upper-case or lower-case, but will always be treated as if they are upper case (e.g. Alpha-Cen will be treated as if written ALPHA-CEN).
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• Some special target names are reserved for calibrations and other purposes and may not be used for names of external pointings; see Table 3.1: Designations of Special Targets.If desired, you may give one or two “common names” for your target, which will be entered in the Alternate_Names. For example, HD124897 could have Alternate_Names of ALPHA-BOO and ARCTURUS.Only Target_Name is used when the target name is repeated in the Visit and Exposure Specifications.3.1.2.1 Cataloged TargetsIf your target is in a well-known catalog (e.g. SDSS, NGC, PG), then use that catalog designation for the target name. This is the name your object will have in the Archive, so please try and select the most common name for the target to make it easier for archive researchers to find your target.3.1.2.2 Uncataloged Targets
1. Isolated objects must be designated by a code name (the allowed codes are STAR, NEB, GAL, STAR-CLUS, GAL-CLUS, QSO, SKY, FIELD, and OBJ), followed by a hyphen and the object’s J2000 equatorial coordinates, if possible, rounded to seconds of time and seconds of arc (e.g., for a star at J2000 coordinates RA: 1H 34M 28S, DEC: –15D 31' 38", the designation would be STAR-013428-153138).
2. Uncataloged objects within star clusters, nebulae, or galaxies must be designated by the name of the parent body followed by a hyphen and the rounded J2000 coordinates, if possible, of the object (e.g., for a target within NGC 224 with J2000 coordinates RA: 0H 40M 12S, DEC: +40D 58' 48", the designation would be NGC224-004012+405848).
3. Positions within nebulae or galaxies may also be designated by the name of the parent object followed by a hyphen and a qualifier. The qualifier should be brief, but informative (e.g., the jet in NGC 4486 could be designated NGC4486-JET). Other examples are: NGC5139-ROA24, LMC-R136A, ABELL30-CENTRAL-STAR, NGC205-NUC.3.1.2.3 Alternate NamesIn addition to the catalog name, a target could be assigned at most two alternate “common names,” or aliases, if they exist. Examples of common names are the following: BARNARDS-STAR, OMEGA-CEN and M31.3.1.2.4 Special TargetsThe names of certain types of targets must be designated by appending a code to the target name. For example, -CALIB should be appended to the name of a target that is being observed only as a calibration standard for other observations. These designations will assist in planning of the observing schedule. The possible codes are listed in Table 3.1.Table 3.1: Designations of Special Targets
An astronomical target used for calibration (e.g., BD+28D4211-CALIB). Internal calibration sources (e.g., WAVE) and calibrations using the Earth must not be included in the Target List. Two separate exposures must be defined on the Visit and Exposure Specifications; an acquisition of the -OFFSET target, and a science exposure of the (target of interest) program target. The location of the latter target may be specified either by equatorial coordinates or by an offset (see Section 3.2.2 on page 34).For example: to observe the JET in 3C273, first acquire “stellar-like” source 3C273-OFFSET, then offset to program target 3C273-JET. A target description must be selected for each target. The Target Description will be one of the key fields used by archival researchers in searching through the HST data archive; thus it is extremely important that the information be filled out completely and accurately for each target.Each target must be assigned a single primary category from Table 3.2, and at least one descriptive keyword, chosen from the appropriate Table 3.3 through Table 3.9 (see Table 3.2 for which table is appropriate for each category). The discrete features and descriptors in Table 3.10 may be used as descriptive keywords for any category. A maximum of five descriptive keywords may be selected.The categories in Table 3.2, and some of the descriptive keywords in Table 3.3 through Table 3.10, are followed by explanatory text in parentheses. This text is provided only for explanatory purposes and is not part of the category or keyword itself.
Table 3.2: Target Categories SOLAR SYSTEM (Solar System Object) STAR (Galactic Stellar Object) EXT-STAR (Star in an External Galaxy) STELLAR CLUSTER (Galactic Star Cluster, Group, or Association) EXT-CLUSTER (Star Cluster in an External Galaxy) GALAXY (Galaxy or AGN) CLUSTER OF GALAXIES (Galaxy Groupings, Clusters, Large-scale Structure) ISM (Interstellar Medium of the Galaxy) EXT-MEDIUM (Interstellar Medium of an External Galaxy) UNIDENTIFIED (Unidentified Objects) CALIBRATION (Calibration Observations)
Table 3.3: Descriptive Keywords for STAR and EXT-STAR LMXB (Low Mass X-ray Binary) MXB (Massive X-ray Binary) Polar (AM Her Star) Intermediate Polar (DQ Her Star)
Spiral (Spiral Galaxy) Quasar (Radio Loud) Lenticular (Lenticular Galaxy) Elliptical (Elliptical Galaxy; Not A Dwarf Elliptical) BL Lac (BL Lac or BLAZAR) Dwarf Compact (Dwarf Compact/HII Galaxy) BCM (Brightest Cluster Member) BGM (Brightest Group Member) LSB (Low Surface Brightness/HI Rich Galaxy) High Redshift Galaxy (z > 0.5) QSO (Radio Quiet)
BCM (Brightest Cluster Member) BGM (Brightest Group Member)
SNR (Supernova Remnant) Damped Lyman Alpha Cloud (Extragalactic) PDR (Photon Dominated Region)
BLR (Broad Line Region) NLR (Narrow Line Region)