The fl04 Sinistro camera (in Dome C at our Chilean site) warmed-up unexpectedly on Friday (Feb 19) and was producing bad frames. We suspect that the problem was contamination in the cooling system, which has now been cleared, but we're monitoring the camera's performance tonight.
We have corrected a glitch in the Sinistro cameras. Because of the way the raw frames were processed, one row of pixels was removed between the top and bottom quadrants. The omission is "invisible" (i.e. there's no gap in the processed frame), but the omitted row creates a discontinuity in the astrometry between the top and bottom halves of the frames. We have recently corrected this omission, and hereafter, images will be astrometrically continuous from the top to the bottom of the frames. To accommodate this change, we must also make the correction to our flat fields, so that we can properly flat field the new-format frames.
Annual Award to be Presented by the National Academy of Sciences in Washington, D.C. this May
The Sinistro camera at LCOGT's Texas site (ELP) is now available for science observations.
This is the original announcement. For full details of the workshop, please see the workshop website.