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Comment: Published by Scroll Versions from space DraftSPEARFIMS and version 1.0

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Sky image with large holes.Image Modified

Figure 1 - count image, spanning about 60 degrees across, with only the SPEAR median filter applied (Generation 8 SPEAR processing). Mean continuum counts are 38.2 photon/pixel.

 

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Sky image with smaller holes.Image Modified

Figure 2 - count image, spanning about 60 degrees across, with the SPEAR two-step convolution+median filter method applied (Generation 9 SPEAR processing). Mean continuum counts are 30.0 photon/pixel.