Tag Archives: moon

Watching the Terminator on a waning Gibbous Moon

Posted on by March 30, 2025
Inspired by lovely sketches by astronomer Mary McIntyre, I decided to see whether I could also see the movement of the Moon’s terminator over just a few hours.
I set up two waning gibbous moon missions, just over four hours apart on Slooh Australia One.
I had read that “careful observers” would maybe be able to see the 15.4 km per hour (9.6 mph) movement of the terminator (as at the Moon’s equator)
Apparently top class human athletes would be able to keep up with the terminator!
If you look carefully towards the terminator where I have labelled craters, you may also spot the differences as the Moon waned from 14:00 – 18:30utc.

Seven year as an astronomer member on Slooh

Posted on by March 30, 2025

I’m celebrating another anniversary on Slooh – 7 years as an Astronomer member.

When I joined Slooh, the account tiers were a bit different and I started off as a “Crew” member for a while. Everyday on Slooh is a huge blessing.
I still have the list of names of everyone who helped me with projects, when I was clearly in the deep end. All my efforts received tremendous support and I gained Slooh “gravity points” to fly- way up to “Hubble” level.
Oh wow, those middle of the night star parties ( just audio – no Zoom back then) with Paul Cox, Helen Avery and Dr Paige Godfrey
The Slooh Moon Phase Challenge:
Thanks to my grandchildren who posed for my shots, my Moon poster was awarded with a book from Slooh, which made its way all the way to South Africa! Who would not feel blessed?