Friday, August 25, 2017
Clouds,clouds, and more clouds
Since June 1st, it's been cloudy every evening. The clouds seem to disappear for an hour only to return again. The one night that did not have any clouds happened to be an entire night with a full moon! I’ve just about given up hope to do any imaging until autumn. The good news is that it’s given me some time to tune up my processing skills. I reprocessed several images that I posted earlier this year. I did not add any additional integration time (too many clouds) to the images. I just tweaked some of the settings and used some of the other processing options available in PixInsight. Here's two "before and after" images that I reprocessed:
AFTER (The image was flipped and left uncropped) The galaxy has more contrast and color. The dark lanes can easily be seen. A few more distant galaxies are visible. The image could use more integration time, especially in Ha to bring out the nebulosity. I'll image this one
AFTER (Deconvolution and a few other processes were added) The core has more contrast and the nebulosity is more apparent. The galaxy appears much larger in this image as the faint outer arms are visible. The image is noisy, but the star colors look much more realistic.
Hopefully, the clouds will part long enough so that I can finish a project I started earlier this year, M13 (Hercules Globular Cluster). Up next...cabinet doors (kitchen and utility room), bench (entry area) and a rock retaining wall. Stay tuned. George