10.2 Phase 2-Scheduling Approved Observations
Below, we provide a checklist for observers filling out Phase 2 proposals. You should do the following prior to submitting your program.
For All Proposals:
- Update the text in the Phase 2 template ("Observing Description" and "Special Requirements"-they were copied from your Phase 1 proposal and may need modification based on TAC comments and definition of the observation details).
- Specify your coordinates (especially for spectroscopic observations) in the "Guide Star Reference" frame. Be sure to specify the coordinate source used, and, if applicable, include the GSC PLATE-ID in your phase 2 proposal file. If your target has significant proper motion, be sure to also include this information in the appropriate fields in the phase 2 proposal file. Check that the units of the proper motion are correct, and that the epoch specified is consistent with the coordinates supplied.
- Specify accurate V magnitude, fluxes, spectral type, and colors for your target. This is required for MAMA targets to allow for bright-object screening.
- Properly specify your exposures.
- Include target acquisitions and peakups as needed.
- Specify any needed orientation and/or timing requirements. To facilitate scheduling, please provide the broadest possible ranges for these requirements that are consistent with your scientific needs. If multiple
ORIENT
s are possible, please include the alternatives.
- Specify any allocated coordinated parallel exposures.
- Include any additional wavecal exposures if needed.
- Verify the correct usage (i.e., direction) of your
PATTERN
optional requirement or POS-TARG
s (if used).
- For slitless spectroscopy or prism observations, remember to take an image and the proper calibration sequence if needed.
- Check the
Phase 2
web page for any updates. You can also find there instructions for requesting changes to your program and observing policies.
For CCD Observations:
-
CR-SPLIT
CCD exposures, as appropriate. Keep individual exposure times < 1000 s if possible to avoid excessive cosmic ray events.
- Add fringe-flat exposures for
G750L
and G750M
observations at
> 7500 Ĺ.
- Consider the use of dithering for imaging observations, or stepping along the slit for spectroscopic observations.
- Consider whether moving the target closer to the CCD readout by using the E1 pseudo-aperture positions to reduce charge transfer efficiency (CTE) effects would benefit your program.
For MAMA Observations:
- Re-verify that your target falls below the bright-object limits.
- For
TIME-TAG
observations, verify the value for BUFFER-TIME
.
- Consider the use of dithering for imaging observations.
- Consider the use of stepping along the slit for first-order modes or the use of
FP-SPLIT
slits for echelle modes, when high signal-to-noise is required.
Space Telescope Science Institute
http://www.stsci.edu
Voice: (410) 338-1082
help@stsci.edu
|