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Noise Based Detection and Segmentation of Nebulous Objects
Mohammad Akhlaghi, Takashi Ichikawa
A noise-based non-parametric technique for detecting nebulous objects, for example, irregular or clumpy galaxies, and their structure in noise is introduced. "Noise-based" and "non…
Excellent daytime seeing at Dome Fuji on the Antarctic plateau
H. Okita, T. Ichikawa, M. C. B. Ashley +1
Context. Dome Fuji, the second highest region on the Antarctic plateau, is expected to have some of the best astronomical seeing on Earth. However, site testing at Dome Fuji is sti…
Cryogenic Volume-Phase Holograpic Grisms for MOIRCS
Noboru Ebizuka, Kotaro Ichiyama, Toru Yamada +12
We have developed high dispersion VPH (volume phase holographic) grisms with zinc selenide (ZnSe) prisms for the cryogenic optical system of MOIRCS (Multi-Object near InfraRed Came…