2003 Oct
- Functional testing of the WFC3 UVIS flight spare
detector was successfully completed.
- The WFC3 flight Infrared detector wire weld repair
has been completed. All of the other wire welds were
visually inspected under magnification.
2003 Sep
- The WFC3 flight Ultraviolet Visible (UVIS) detector
#1 Pre-ship Review was successfully completed at Ball
Aerospace.
- The WFC3 development program completed a significant
milestone with the successful execution of the initial
functional test of the fully integrated instrument. Both
the Infrared and Ultraviolet Visible channels, utilizing
the surrogate detectors, produced quality images.
- The WFC3 UVIS flight detector 1 has completed
its final functional test and alignment check.
2003 Aug
- The WFC3 UVIS flight detector 1 is undergoing
its final thermal testing. After thermal testing is completed,
functional testing will be performed, followed by post-vibe
alignment verification.
- The WFC3 UVIS Gas Charge Heat Pipe thermal vacuum
testing has commenced. Testing ran through the week.
- The WFC3 flight UVIS detector assembly has been
aligned and staked and is undergoing functional testing.
2003 Jul
- WFC3 UVIS Flight Detector has completed 3 of 4
planned thermal cycles without issue. The final cycle
is scheduled for this week.
- The WFC3 Infrared (IR) flight detector ghost baffles
were successfully assembled and aligned on the IR detector
assembly.
- The WFC3 Ultra-violet Visible (UVIS) flight detector
assembly is undergoing thermal cycling at Ball. Alignment
activities will continue after completion of thermal cycling.
2003 Jun
- WFC3 post vibration encircled energy testing has
been successfully completed. Preliminary analysis of the
results shows that both channels are well within their
alignment budgets.
- The WFC3 Optical Assembly has been installed in
the Radial Instrument Alignment Fixture and post vibration
Encircled Energy testing has begun on the UVIS channel.
2003 May
- The WFC3 Science Oversight Committee (SOC) met Thursday
at the STScI. The SOC was pleased with the progress
of the instrument and commended the WFC3 team's performance.
- The WFC3 Optical Assembly was reinstalled into
the Flight Enclosure in preparation for post vibration
encircled energy testing.
- The flight WFC3 UVIS Detector Assembly 1 has been
reassembled following repair of the 2-stage thermo electric
cooler to S-strap interface.
- Main electronic boxes (MEB) 1 and 2, the blind
mate connector, the low voltage power supply (LVPS), the
remote interface units and expander units, detector electronics
filters, 4 heater controllers, the MEB heat pipes, and
the radiator trusses have all been installed onto the
flight enclosure.
2003 Apr
- Optical testing of the WFC3 at GSFC is continuing.
During this testing, the Space Telescope Science Institute
(STScI) has obtained more than 3,000 images with both
the UVIS and IR channels of WFC3. The STScI has also performed
quick look analysis and has started a more detailed analysis
of the data. The data will provide a pre-vibration test
baseline for the WFC3 configuration and will be used to
derive the best focus of both channels.
- The WFC3 flight CCD Electronics Box (CEB) and
the calibration lamp assembly have both successfully completed
vibration testing.
- The WFC3 Science Oversight Committee approved
Infrared (IR) detector Focal Plane Assembly 64 for use.
The detector was hand carried to Ball this week to begin
integration into the first flight IR detector assembly.
2003 Mar
- The first images from the IR channel were taken
and the first set of IR phase retrieval images has been
successfully completed.
- Life testing on the WFC3 Engineering Unit IR Filter
Wheel assembly has successfully completed its first life
cycle, which is equivalent to the number of operations
that it would see over its expected lifetime.
2003 Feb
- The WFC3 Pick Off Mirror (POM) was installed onto
the WFC3 Optical Assembly
- Recently delivered WFC3 Infrared detectors have
demonstrated significantly superior results compared to
previous lots.
- The WFC3 Optical Assembly was removed and reinstalled
in the flight enclosure to verify repeatability prior
to vibration testing.
2003 Jan
- Metrology of the WFC3 optical assembly installed
within the flight enclosure has been completed.
- The WFC3 Flight Thermo-Electric Coolers for IR Electronics
(TECFIRE) units have successfully completed vibration
testing and bake-out.
- The WFC3 flight Pick-Off Mirror (POM) has been
received at GSFC from Ball, and has successfully undergone
receiving inspection.
- The WFC3 Optical Assembly has successfully completed
post delivery inspection, mass properties measurement,
and has been installed into the enclosure.
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