Visibility III / V
I noticed a modest piece of tire in the morning sky. I optimistically left the camera on duty when there was such a nice looking cloud. I remembered to pick up the camera in the living room in about an hour and a half. Even then, nothing was really visible, and the timelapsen was not recorded except for the halo fads (Fig. 1, 9.18–10.55).
In the afternoon, Petri Martikainen made a whirlwind . A glance from the window showed only a short section of diffuse ring behind the lower clouds so there was no way to rush out. However, after finishing the work, I went out with the camera. As a nice surprise, the lower clouds had echoed and a decent ring was visible. I took 121 stack photos in twenty minutes (15.51-16.14), then the lower clouds came again. While shooting, I also tried to distinguish some features with a convex mirror, but apart from one diffuse backbone, I couldn’t see anything else.
I stacked all the pictures, USr found 9r and 46r. BR also found 35r and maybe 28r? (Figure 2). At this point, things became tedious. Itered stacks of different lengths at different times and with different treatments. Attracting dim features from different stacks with different settings began to feel hopeless. As an intermediate project, I took the processing of the morning children's data in fixed-size stacks, with standard settings. The script contracts 58 average stacks of 582 images (á 10 images, 10sec intervals). I manually did the USM and BR treatments on the stacks. Finally, I stacked the stacks into a three-step animation: mean, USM, USM + BR (Figure 3). Yes, from there in the BR section, I think the 28r stands out until it is ticked. The best stage is still a giff (picture 4).
Back to the afternoon stacks. In them, I focused on the ghost that was ghosting outside of 9r. USM-Artea or 13r? As a vivid image, an animation showing how changing the BR to the inside of 9r by "blocking" the supposed 13r is strengthened. For the rest of the pictures, I pick the versions where the 13r candidate stands out the least badly. The last picture could even claim to be 5r. Now find out about them now.