Thanks, I'm enjoying this camera very much and coming from the Sony A7 mk1 it's like jumping from a Ford Model T in to a Ferrari F1 car haha.
On my A7iii there is an interval setting. I first work out what exposure time is for each of the 150 images I need to make a star trail. Then on the intervalometer built in to the camera software (mine has ver. 3.0) you set the interval between the start of each exposure to the exposure length plus one second. So if you are shooting 20 second exposures, you set the interval to 21 seconds. Next you dial in the number of shots needed, in my case here, 150. Then just press the shutter button and the camera does the rest.
In Photoshop or Lightroom, you open the files as a stack and select all the images at once. Then apply a Lighten Blend mode to display all the moving parts in all 150 images. The trails appear right there!
Some clean up may be required where you might have to clone out the many plane trails. I prefer my star trail images without planes but some leave them as is.
I think I might have to do a tutorial on how to create a star trail shot for the Hive!
Thanks a lot for the explanation!
As I said, I still have a lot to learn about this camera and all the settings and features available!
If you make a tutorial, also show how you set it on the camera! A star trail is definitely something I would love to do but haven't tried it yet!
The leading authority on astro, and with a Sony A7iii, is Alyn Wallace on YouTube. This is how he stacks star trails:
Thank you very much!