Neptune and satellites Triton and Nereid with C11 on 23/24th Sept 2025

[Dennis]

Wow, that so cool!

It looks like Nereid is off by just a little bit. I've been redoing moons with a new algorithm, and I'll check to see if this was one of them. I may be able to learn something from your image.

Thank you for sharing this!

Thanks Greg, the ST4 plotted position looked fine to me and I try to take the screen capture mid sequence of the imaging time rather than at the start or end.

I hope you do not have any plans to add Sycorax, the largest irregular satellite of Uranus (mag 20.7) to ST4, as that would force me to move up to an instrument in the 18-24 inch class!

I find it cool that Nereid was discovered quite recently, on May 1, 1949 by Gerard P. Kuiper with a ground-based telescope. It was the last satellite of Neptune to be discovered before Voyager 2's discoveries four decades later.

Dennis.