2 replies to this topic

[lorenzo italy]

Last November 22nd I attempted some lunar shots.
As usual, the turbulence was present in quantity, III scale of Antoniadi, thanks to the roofs and chimneys of the houses in front.
I took a few shots anyway, and I only edited the video for this one today, avoiding its end in the trash can on my PC.
With surprise I saw that in the shadow generated by the mountains that make up the crest of the Plato crater, a small hook can be glimpsed. Of course it's not real, you can clearly see that a hill slightly higher than the bottom intercepts the sunlight, creating the illusion that there is an opening between the mountains above.
The effect is still nice, even more so because I recorded it randomly. Great luck.

 

22.11.2023
UT 17:26
Celestron C8 telescope
red filter
ZWO ASI178mm camera

Autostakkert3 processing, AstroSurface
sum of 100 frames out of 3379

 

Lorenzo

 

[John_Moore]

Nice observation, Lorenzo 

 

While different to the Plato's Hook optical phenomenon reported awhile back here (Cloudy Nights link), you'll find an explanation as to your 'Plato's mini hook here. It's still a wonderful site to see, and something to 'hook'  you and us in.

 

John

Edited by John_Moore, 08 December 2023 - 08:34 AM.

[lorenzo italy]

Thanks John for the interesting links.
I knew Plato's large hook, but I had no idea about the smaller one I had taken.
I attach the link to a gif of my video, the hook is barely noticeable and you can see the turbulence I have to struggle with to take the photo.

https://imgur.com/8w0Bak2

 

Lorenzo