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Blue Moons
When is a Blue Moon not a Blue Moon ? Most people, including me, would say that January 31st 2018 is a Blue Moon as it is the second Full…
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The Magnitude Scale
Even with the unaided eye we can make some estimates of the properties of a star against the dark background of the night sky. Perhaps the most obvious observation we…
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Atmospheric colour dispersion
Lunar images, atmospheric colour dispersion and comparison of telescope configurations I don’t often look at or image the Moon through a telescope, but I decided to do that for a…
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Astro Hacks: Tripod and mount leveling
It’s always a challenge to level the tripod for an equatorial and a few years go I started using a two-axis level with one leg at each of the three…
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Variable Stars: U Orionis
U Orionis Observing Notes 2007-2009 The British Astronomical Association made U Orionis, a long-period variable or “Mira” star, its variable star of year for 2008. This star varies over a…
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Astro Hacks: DIY Tube Ring Marker
I’m sure that many of you will have come across the same frustration that I used to have – I’d set up my ’scope (a 6” Fullerscope newtonian) for my…
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Astro Hacks: Luminous Tape
How many times have you been out observing or imaging under a dark night sky and said something like “Now where did I put down that pesky red-light torch?” Or…
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Update on an 11 year image!
Back in September 2011 one of our former members Chris Thayer, caught an image of a super nova in M101. In November 2022 at a talk given by Mark Sullivan…
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Collecting meteorites
Owning a piece of the early solar system Since joining the UK Meteor Monitoring Network Project my interest in meteors, their compositions and origins is growing. Whilst tucked up in…
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Delta Cephei
Steve Baker wrote a very interesting piece about Delta Cephei in a recent newsletter. I have copied this here and added a bit more information about how to observe it.…