ewan douglas

@douglase.bsky.social

312 Followers 879 Following

Professing on space telescopes of all sizes; Tucson, AZ.

Fig. 2: Flowchart illustrates the implementation of aEFC for this work. For each control iteration, the first step is to estimate the focal plane electric field. Here, we assume that pairwise-probing (PWP) is used for this estimation. The next step is to compute the nominal model-based electric field ENOM, which is passed into the optimizer. Within the optimizer is a smaller loop where the forward model is evaluated to compute the cost-function value, then the adjoint model is evaluated to compute the gradient with respect to DM actuators so the optimizer can step the actuators in the direction that minimizes the cost-function. Once the optimizer’s tolerance value or iterations limit is reached, the actuator solution δA is applied to the instrument and the control iteration repeats.
Bluesky now has over 10 million users, and I was #500,463!
Figure 11. The output polarized intensity (Qϕ ), total intensity, polarization fraction, and θ for epsilon Eridani (left-panel) in HLC mode and HR 4796A (right-panel) in SPC mode.
Partial lunar eclipse with iphone through eclipse viewing glasses