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Fig. 3


All images as normalized by the rms over the full images. North up and east to the left. a) Simple stack of the HD 135344 B GPI J-band dataset scaled by ρ2 and spatially filtered to isolate features between 2–8 pixels in size. b) Regular ADI reduction and c) Channel 35 (λ = 1.337 μm) reduced with a non-blind variant of point-source MLOCI, targeting the SW spot. Here, the spot is treated the same as a reference source, and no other reference or target sources are used in the reduction. d) MLOCI matching regions: signal is preserved in the lightest regions. Noise is suppressed in medium blue regions. Darkest regions are not matched. e) MLOCI reduction matched to regions in d). Region within 240 mas of center divided by 5, to improve stretch. f) MLOCI reduction matched to a vertically flipped version of the map in d) but flipped vertically. This demonstrates that it is difficult to create false disks by MLOCI.

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