Speaker
Description
Rubin Observatory has a unique optical beam geometry. The large collecting area of the primary mirror, combined with atmospheric seeing-limited imaging across the large (9.6 $\rm deg^2$) field-of-view, enables the survey mission.
The combination drives a fast (F/1.2) beam geometry with unprecedented sensitivity to defocus driven, point spread function blur and shape transfer, even under operation (closed loop, active optic compensation).
The LSST focal plane is constructed out of 205 individual sensor surfaces under passive alignment and operates at -100$^\circ$C within the cryostat vacuum. In this presentation we describe the Manufacturing, Integration and Testing effort that went toward assembly of the ultimate focal plane (achieving 4$\mu$m rms deviation from flat), as well as the detailed, underlying as-built characterization knowledge under operating conditions. We anticipate that these data will enable improved point spread function estimation/extrapolation in instances where its contribution may be ambiguous or inadequately quantified.
Keywords for your contribution subject matter (this will assist SOC in accurately characterizing your contribution)
focal plane geometry; point spread function; weak lensing; shape transfer
| contribution subject matter | point spread function fidelity |
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