Transit of Titan and Shadow Part II
Taken by Robert Lunsford on September 20, 2025 @
Southern California
Click photo for larger image
| |
Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
|
|
| More images
Details:
Now that I have more sleep, I would like update my previous post. I was using a C9.25 SCT at f/12.6 plus an atmospheric dispersion corrector. I took 90 second video sequences which amounted to 10,000 frames for each photo. 25 percent of the frames were used for most of the sequences. They were processed using AutoStakkert and RegiStax6. The seeing was only 3/10 at the start of the session (9:45pm PDT) and 5/10 and the end (1:15am PDT). Saturn climbed from an altitude of 34 to 54 degrees and was just past the meridian at the end. The transparency was also poor ranging from 2/5 to 1/5 by the end. Despite the poor conditions the sky was clear and satisfactory images were obtained. Titan itself was not visible through the eyepiece or on my monitor until the shadow of Titan was off the globe due to the poor seeing. That was a bit disappointing but at least both are clearly shown in the photographs. So I have seen parts or all of each transit since May 31st with one more to go.
Photographer's website:
No URL provided.
|
|
|
