Closed-loop PSF - J,H,K bands on-sky

From 5/15

Shared-risk science observer Tucker Jones was kind enough to let us collect point-spread function data at wavelengths across the near IR coverage of ShARCS.

Here's AO-corrected images on-sky in K, H, and J bands:

Point-Spread functions in 3 science bands, compared to open-loop seeing.
ShARCS pixels are 0.035 arc seconds.

The bright-star Strehl ratio performance looks remarkable. Looking at the H band star PSF and comparing it to the image-sharpened internal source, we can make a rough calculation of on-sky relative Strehl:

Strehl in H is around 78%*
*relative to internal calibrator