Acceptance Criteria / Commissioning Requirements for WTTM
Priorities indicated as H(igh), M(edium) and L(ow)
- Produce an Observing manual and installation guide [H]
- Commissioning report showing the following:
- DIQ improvement estimate at various wavelengths (B,V,R,I and Z)
via a comparison of contemporaneous MiniMO and WTTM images.
Dependence of the above with guide star mag / correction speed, and
with distance from guide star.
Mean seeing evaluation in B and I.
[Highest priority - this measures the worth of the instrument]
- distortion map - astrometry solution [H]
- wavelength response characterization with each of the dichroic/mirror
i.e. broadband BVRI on standard stars [H]
- CCD response properties: linearity, fat-zero, noise-isolation,
cross-talk [H]
- shutter characterization: timing correction and shading correction [H]
- image & optical alignment of both, IAS mount, and pickoff-mirror [H]
- scattered light measurements [H]
- Headers
- Verify accuracy and completeness of header information [M]
(need to make a list of desired keywords)
- suggested recording the actual corrections, or a measure
thereof, such as the mean moments on each axis [M]
- Some acceptable measure of how instrument interacts with telescope, e.g.
- focus tracking works? [H]
- does instrument `talk' correctly with WIYN control system? [H]
- DADS/STB connection established and working? (DADS:[L], STB:[H])
- Functioning ADC? (not a WTTM item per se.. so should be separate
from WTTM acceptance) [L]
- Determine focus offset wrt MIMO [H]
ease of switching between MIMO and WTTM -- how long it takes [H]
do flat fields work even
after switching [H]
- Interface to observer -- i.e. how easy/complex is computer interaction
with observer -- finding, setting up a guide star, etc. [H]
mode where MIMO image is taken -- info use to set up WTTM [M]
- Photometry demonstration and accuracy [M]
Characterization of how PSF varies with distance and direction from
the guide star [H]