| | 8 | We have primarily been working on preparations for the demo month. We built new darks and flats - this took a couple of iterations to address some minor issues, including treating missing GAIN values in the camera as a default value of 1.0, rather than evidence of a dead cell. We built a new darkmask, and over the weekend, the whole team here worked on manually masking features missed in the automatic mask generation. In this round, we have added an automatic masking of the roll-off on the cell edges by checking for the bad flatting in both a science and sample flat-field image. We also found that we needed to mask some corner glow more than in the previous round. Also, we found that we needed to mask the 0-3 columns of ota14. We did not particularly find more hot column / glow structures than previously, and in a few cases we reduced the masking around some glow structures. Overall, the total masked fraction in the vignetted area is now 9.7%, rather than the 5.6% we had in the previous round. |
