Not quite a hillfort, more a long ditch and bank; the confidence of Offa’s Dyke lies deep within the landscape. #HillfortsWednesday

It’s a good time to pop up to Castell Dinas Bran above Llangollen this week to see the excavations by @henebtwa.bsky.social Cadw and Chester University on the 13th century castle gateway and across the Iron Age hillfort defences. Interesting detail coming up on the quite elaborate castle entrance.

Finally some clear skies as #sanfrancisco summer arrives. This #astrophotography star trails image is cluttered by zillions of airplanes from SFO airport, against a background of stars and planets. See how it's made in the animated version below. These cameras at paulclanon.com/cameras

The San Francisco summer has been especially San Francisco-ey this year; my sky cameras have gone weeks at a time without glimpsing a star through the clouds. During the days I sometimes get treated to beautiful clouds themselves, though. Here's 30 minutes of shots looking west.

Venus and Saturn just barely making it into the last possible frames before it got too light this morning; you can see the predawn glow behind my neighbors' house on the left. Streetlight at bottom right. Current photos from this camera at paulclanon.com/cameras . #sanfrancisco #astrophotography

I call this one "When the Doublebass Solo Starts". Fisheye lens looking straight up this afternoon in San Francisco. Current pics from this camera at paulclanon.com/cameras . #RaspberryPi #astrophotography #sanfrancisco

Sometimes the sky just serves up a mystery. Three-winged bird? Baby dragon? Bird carrying its lunch? Current pics from this camera at paulclanon.com/cameras . #sanfrancisco #raspberrypi #astrophotography

A dark sunset over San Francisco last night. Current photos from this camera stream at paulclanon.com/cameras . #sanfrancisco #sunset #raspberrypi #astrophotography

Burning-bush effect as the sun sets through a tree. Current pics from this camera at paulclanon.com/cloud_cam . #sanfrancisco #sunset

The sun setting through a tree on the southern slope of Mt. Davidson in San Francisco today. Real-time pics from this camera at paulclanon.com/cloud_cam . #sanfrancisco #sunset #RaspberryPi

A fiery sunrise over San Francisco, CA this morning in these shots taken by one of my rooftop sky cameras in the Miraloma Park neighborhood. Real-time pics from this camera at paulclanon.com/cloud_cam . #sanfrancisco #sunrise #RaspberryPi

A meteor burns past Jupiter last night over San Francisco, CA. More pics in the Gallery at paulclanon.com/cloud_cam . #astronomy #astrophotography #RaspberryPi #sanfrancisco

I have four cameras on my roof keeping track of the skies. I'm mostly interested in astrophotography, but I also get great sunset pics, birds fly past, I get dramatic cloud timelapses, that kind of stuff. Here's a recent sunset and a star-trails image from last night, both from the same camera.

Happy "Clock Time is Solar Time Day" in San Francisco, CA to all who celebrate. Today and tomorrow the sun will reach its zenith (not really overhead at our latitude, but its highest point in the day) at Noon, the only days all year that's true.