Engineering-related requirements are only available if the ALLOW RESTRICTED checkbox is selected in Program Information. 

Engineering

ENGINEERING = ENGINEERING MODE VISIT DURATION

This special requirement specifies the type of engineering observation and duration.

• Options for ENGINEERING MODE are MOMENTUM UNLOAD .  STATION KEEPING , and  GENERAL ENGINEERING . Only one option is allowed.
• VISIT DURATION is the duration of the visit in seconds.  The range is 1 TO 172800 seconds.

When ENGINEERING is used:

• The PASS TARGET  may be any Fixed Target in the program or NONE, but may not be MULTIPLE FIXED TARGETS or a REGION TARGET .

• MOSAIC ,  DITHER , and SUBPIXEL DITHER  are set to NONE and are not editable.
• OPTICAL ELEMENT , EXPOSURES/DITHER , MA TABLE ,   RESULTANT , and OBSERVATION REPEAT are not editable and any values are removed.
• All observations in the segment plan must include  ENGINEERING .
• CALIBRATION   and ENGINEERING special requirements are not allowed on the same observation.

Focus Type Override

This special requirement specifies an override of the Focus Type for all exposure pointings in the observation. 

FOCUS TYPE OVERRIDE = SMALL MODERATE LARGE

Real Time

This requirement specifies that the current (engineering) observation should have real time access (i.e. be executed during a contact) to Roman. The REAL TIME special requirement has no parameters. When present, a flag is set indicating REAL TIME will be used for the observation. 

Wavefront Control File

This requirement provides the filename of a Wavefront Control File for the selected observation. The wavefront control file name may contain no more than 31 characters and may contain only ASCII letters, numbers, underscore (_), dash (-), and period (.).

For additional questions not answered in this article, please contact the Roman Help Desk at STScI.