Phase 2 Proposal Instructions for Cycle 10

5.7 Target Name [Target_Name]

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Normally, the name of an astronomical target from the Target List should be entered. In the case of certain internal calibration sources, a special code must be entered. In general, calibration observations will be requested only rarely, since most calibrations will be carried out by STScI (see the Call for Proposals).

Due to scheduling constraints, fixed external targets and solar system targets may not be used in the same visit. Also, none of the external calibration targets (EARTH-CALIB, ANTI-SUN, ORBIT-POLE-NORTH, ORBIT-POLE-SOUTH) may be used in the same visit with another external target.

5.7.1 Astronomical Targets

The target name should be entered exactly as it appears in the Target List (see 3.2Target Name [Target_Name and Alternate_Names]). Only the prime target name (Target_Name) should be used; do not use the alternate names (Alternate_Names).

5.7.2 Special Targets

If an internal calibration observation is requested on the Visit and Exposure Specifications, one of the specific ÒtargetÓ names in Table 5.1 must be entered. The calibration source should not be entered in the Target List. See the Call for Proposals for discussions of the routine calibrations that will be performed by STScI. See the Instrument Handbooks for further details of the calibrations for each instrument.

Table 5.1: Internal Calibration Target Names

STIS
WAVE
CCDFLAT

 

The special external targets listed in Table 5.2 may be specified in the Target_Name without including them in the Target List.

Table 5.2: Special External Target Names

Name	Description
EARTH-CALIB	The sunlit Earth is used for a flat-field calibration. EARTHÐCALIB may not be used in the STIS/FUVÐMAMA and STIS/NUVÐMAMA configurations, because of bright object constraints. For the same reason, EARTHÐCALIB may not be used with ACS/SBC.
ANTI-SUN	Target will be nearly opposite the Sun whenever scheduled.
ORBIT-POLE or ORBIT-POLE-NORTH	Target will be the North orbit pole.
ORBIT-POLE-SOUTH	Target will be the South orbit pole
ANY	Allowed on pure-parallel and coordinated-parallel exposures. The target will be wherever the parallel aperture happens to point.

 

Specific astronomical objects used as external calibrators (e.g., standard stars) should be entered in the Target List and Visit and Exposure Specifications as normal exposures, and the suffix -CALIB should be appended to their names, as discussed in 3.2.4Special Targets.