GO proposals must include a list of all targets. Snapshot proposals need only include a representative subset of targets in the Phase I submission
(see Section 3.3.3
For proposals with a large number of fixed targets, there is a capability to ingest a comma-separated text file with the appropriate target information. See the APT Phase I Roadmap
("Fill in the Target Information") for details.
The target naming conventions for HST are defined in detail in Section 3.2 of the HST Phase II Proposal Instructions
. Please adhere to these naming conventions throughout your proposal. For generic targets use a short text description either of the target location (e.g., RANDOM-FIELD
) or of the target itself (e.g., NEXT-SUPERNOVA
Supply the coordinates for fixed targets only. In Phase I, target positions with accuracies of ~1
arc minute are sufficient for the TAC and panel review (except in crowded fields where the identity of the target may be in question). However, in Phase II significantly more accurate coordinates will be required, and it is the responsibility of the proposers to provide these. See the STScI Phase II documentation
A magnitude or flux should be specified for every target. Supply the V-magnitude for the entire target (galaxy, planet, etc.), if known. In the case of observations with ACS/SBC, STIS/MAMA, or COS, specify the V-magnitude of the brightest object in the field of view (this may not be the primary target). For variable targets, give the brightest V-magnitude expected during the observations. The configurations mentioned above have detectors with bright object safety limits, and observations that violate those limits are infeasible. See Section 5.1 of the HST Primer
, or the respective Instrument Handbooks (see Section 1.4.4
) for details. With the exception of the safety checks, this information is used only for scientific review, not for exposure-time calculations. It is not required to specify the V-magnitude or flux for generic targets.
For each target you should specify either a V-magnitude or another magnitude or flux. Supply the apparent total
magnitude or flux in the relevant passband for the entire target (galaxy, planet, etc.), if known. For variable targets, give the brightest magnitude expected during the observations. This information is used only for scientific review, not for exposure-time calculations. The format is free text.