6.3 Exposure-level Special Requirements
Exposure Special Requirements summary
HST has special requirements that are used to specify scheduling constraints at the exposure level, and this article contains the descriptions of those requirements. |
Sections
- 6.3.1 General Exposure-level Special Requirements
- 6.3.2 Timing Exposure-level Special Requirements
- 6.3.3 Target Position Exposure-level Special Requirements
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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.
More about Exposure-level Special Requirements
 Use the table below to go directly to information for a particular exposure-level special requirement. |
The following Special Requirements apply to individual exposures within a visit. All instances of <exposure-list> or <exposure> refer only to exposures in the same visit as the exposure carrying the requirement.
Supported Formats for Exposure-level Special Requirements
| FORMAT | EXAMPLE | |
|---|---|---|
No longer available; see text. | ||
See Exposure Containers: Exposure Sequences, Coordinated Parallels and Patterns PAR 4-6 WITH 1-3 | Must be indicated in Phase 1 proposal | |
RT ANALYSIS | ||
REQ UPLINK | ||
REQ EPHEM CORR OFF-13 | ||
POS TARG +6.3,-8.1 | ||
SAME POS AS 6 | ||
PATTERN <#> [<exposure-list>] (Replaced by Pattern Containers in the APT User Interface)) | See Exposure Containers: Exposure Sequences, Coordinated Parallels and Patterns and 7 Pointings and Patterns PATTERN 5 1-4 | |
| Timing Requirements | ||
LOW-SKY | Must be indicated in Phase 1 proposal | |
PHASE 0.09 TO 0.11 | Must be indicated in Phase 1 proposal | |
See Exposure Containers: Exposure Sequences, Coordinated Parallels and Patterns and 7 Pointings and Patterns SEQ 2-5 NON-INT | Must be indicated in Phase 1 proposal | |
SHADOW | Must be indicated in Phase 1 proposal | |
For engineering parameters
| FORMAT | EXAMPLE | |
|---|---|---|
Special Communications Requirements |
| |
FORMAT FN |
| |
Visit Special Requirements |
| |
VISIBILITY INTERVAL 5000 S |
| |
Exposure Special Requirements |
| |
MAX DUR 125% |
| |
MIN DUR 1200S |
| |
EXPAND |
| |
NEW OBSET |
| |
NEW ALIGNMENT |
| |
SAME OBSET <exposure-list> (replaced by Exposure Group containers in the APT User Interface) | See Exposure Containers: Exposure Sequences, Coordinated Parallels and Patterns and 7 Pointings and Patterns SAME OBSET 10-20 |
|
SAME ALIGNMENT <exposure-list> (in APT replaced by Exposure Group containers in the APT User Interface) | See Exposure Containers: Exposure Sequences, Coordinated Parallels and Patterns and 7 Pointings and Patterns SAME ALIGNMENT 20-30 |
|
SAME GUIDE STARS <exposure-list> (in APT replaced by Exposure Group containers in the APT User Interface) | See Exposure Containers: Exposure Sequences, Coordinated Parallels and Patterns and 7 Pointings and Patterns SAME GUIDE STARS 10-20 |
|
GSPAIR 0748300182F10000000000F0 |
| |
OBSET ID A2 |
| |
EXP PCS MODE FINE |
| |
GS ACQ SCENARIO SINGLE |
| |
For available but unsupported parameters
For restricted parameters