STIS Cycle-29 Calibration Phase-1

Last Revised: May 14, 2021
Proposal ID:
Title: CCD Dark Monitor Part 3
PI: Matthew Maclay
Co-I(s):
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# Orbit estimates are TOTAL for all of cycle-29; assume 17 weeks
# 11 July 2022 through 06 November 2022

Total Prime Orbits:             0
External Parallel Orbits:       0
Internals or no-impact orbits:  238
Comments on orbit estimate:   Orbits will occur twice a day
starting in July 2022 and ending in November 2022.


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# This section should be written with a GO audience in mind --

Purpose:  Monitor the darks for the STIS CCD.


Description:   Obtain darks at GAIN=1 in order to monitor CCD
behavior and chart growth of hot and bad pixels. Check how
well the anneals work for the CCD. All exposures are internals
and fit in occultation orbits.

Accuracy:  < 0.012 e-/s, S/N > 1.0

Comments on Accuracy: Superdark rms < 0.012 e-/s and S/N > 1.0

Products: Weekly CDBS reference files (superdarks) and
a summary in the end of cycle ISR



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# THE REST OF THIS FORM IS FOR INTERNAL USE
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# Target information (copy for each target)

Target Name.............................: n/a (internal)
RA.............................................: n/a
Dec...........................................: n/a
Flux (and units)........................: n/a
Visibility window (if known or relevant): n/a
Comment on choice of target: n/a

# Table of exposures (copy for each exposure):

Target or lamp..........................: DARK
Type of Acquisition.....................:
Detector for observation................: STIS/CCD
Operating mode .........................:
Spectral Element........................: DEF
Aperture................................: DEF
Central Wavelength......................:
Exposure Time...........................: 1100s
Number of Iterations ...................: 1
BOP Predicted Local Count Rate for MAMA.:
BOP Predicted Global Count Rate for MAMA:
ETC PID IDs for Count Rates.............:
Special Requirements or options.........:
Comments: Take exposure twice a day

Target or lamp..........................: DARK
Type of Acquisition.....................:
Detector for observation................: STIS/CCD
Operating mode .........................:
Spectral Element........................: DEF
Aperture................................: DEF
Central Wavelength......................:
Exposure Time...........................: 60s
Number of Iterations ...................: 1
BOP Predicted Local Count Rate for MAMA.:
BOP Predicted Global Count Rate for MAMA:
ETC PID IDs for Count Rates.............:
Special Requirements or options.........:
Comments: Take exposure four times a day.

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# Special needs of this proposal?

Scheduling: Schedule twice a day. Start on July 11, 2022.

Prerequisites: n/a

PDB update?               no
On-board table update?    no

# Special Requirements:
Real time?                N
Special commanding?       N
Quick Data turnaround?    N
Special timing required?  N
Other?                    N
Describe (& justify) special requirements:


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# Link to Cycle 29 Science

Fraction of science programs supported by this calibration:
21.6% of STIS total exposure time.

List categories of science which can't be executed until after this proposal:
none
why:

List categories of science which are best performed contemporaneous with
this proposal:
none
why:

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Expected FTE weeks for analysis:            2
Required turnaround on analysis (weeks):    2
Data volume (Mb needed for analysis):       10.5Mb
Special software needed for analysis? (Describe):
basedarkT, weekdarkT, and daydarkT are needed for the creation of
the superdarks. The 'T' means that there is correction within
each of these procedures that normalizes the temperature on the
Side-2 electronics. Superdarks are created automatically with a
pipeline.

Description of analysis Plans:	Retrieve darks and construct superdarks.
These superdarks are compared to previous superdarks and the
image statistics are checked to see if there are any anomalous
statistical deviations.