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Dalriada n:
Kingdom of the Scots,
home of the residents

All posts by John Coleman

The Galaxy, the Jet, and the Black Hole

I lifted this from Astronomy Picture of the Day , I don’t really understand a word of it but it seems important: Explanation: Bright elliptical galaxy Messier 87 (M87) is home to the supermassive black hole captured by planet Earth’s Event Horizon Telescope in the

No Thumbnail goes VPS

You probably don’t need to know this (or care) but the dalriada domains have just moved from shared hosting (which most people use) to my new Virtual Private Server (VPS). A VPS is effectively my own wee computer, running CentOS 7 Linux, hosted remotely i.e.

Ursa Major over Racquety Lodge

We are just back from a great week at Racquety Lodge near Hay on Wye. I didn’t take a telescope but I was hoping I might get a DSLR snap of the Milky Way – which might have been a feasible proposition but for the

Jupiter from Float Bay View

We are just back from a week’s holiday near the Mull of Galloway. It was a good chance to try out our great little new car, a Skoda Fabia. We managed to load up two bikes as well as the telescope kit, so with all

There’s Orion at the bottom of our garden…

I have just completed a great series of 4 Planetarium Night Classes on The Universe for Beginners at Glasgow Science Centre . The Planetarium is great, with a 15 metre dome and a spectacular state-of-the-art fulldome digital projection system – it has super, laid-back comfy

How many stars in the Great Square of Pegasus?

You can just about make out the constellation of Pegasus as an upside down horse in the southern sky at the moment, see the Stellarium screenshot below: Its most prominent feature is an asterism known as the Great Square of Pegasus. An asterism is a

A waxing gibbous moon

It’s been quite a while since A lunar tour from Earlspark Avenue so I decided to give it another go. We had quite a good clear night on Thursday so I set up the Mak 150 ’scope in the garden, ready for some more snaps

Last of The Summer Triangle

Last of The Summer Wine may have come to an end on TV but The Summer Triangle asterism will run and run. However, it’s about to leave us for its winter holidays, to be replaced for a while by our old friend Orion. Continuing in

Astrophotography the easy way

Who needs a telescope with an equatorial mount on a huge tripod, outside in the cold? Why not try a regular camera on a wee tripod at the bedroom table? The results are not quite the same of course but at least you can get