observing

Perseids peak this weekend

8 August 2023 Mark Armstrong

The Perseid meteor shower, the year’s most popular shooting star show, reaches its predicted maximum activity this weekend, with the Moon’s glare not such a factor this time around.

Ancient open cluster NGC 6791: towards the dawn of the Universe in Lyra

7 August 2023 Mark Armstrong

NGC 6791 is well placed on August nights; located under 10 degrees east of brilliant Vega (alpha [α] Lyrae), it rides high and can be observed throughout the darkening nights.

Galaxy NGC 4565: Coma’s edge-on wonder

29 May 2023 Mark Armstrong

It’s quite an accolade for NGC 4565, a stunning edge-on galaxy in Coma Berenices that’s also known as Caldwell 38 and the Needle Galaxy, to be widely regarded as the finest in its class.

Catch the rays from the Sunflower Galaxy

10 May 2023 Mark Armstrong

Messier 63 (NGC 5055), the Sunflower Galaxy in Canes Venatici, sits comfortably with its reputation as one of the great galaxies visible in the night sky at springtime.

Mizar and Alcor: The Great Bear’s famous naked-eye double

9 May 2023 Mark Armstrong

Not only of surpassing interest historically, zeta Ursae Majoris (UMa), or Mizar, the middle star in Ursa Major’s famous Plough asterism, is also one of the finest double stars in the sky for a small telescope.

Lyrids meteor shower makes a welcome return

17 April 2023 Mark Armstrong

The April Lyrids meteor shower makes its very welcome annual return this week, as always breaking the roughly 15-week hiatus since the maximum of the past significant shower, the Quadrantids back in January.

Meet monstrous Messier 87

17 April 2023 Mark Armstrong

Lurking close to the centre of the massive agglomeration of galaxies which straddle the boundary between Virgo and Coma Berenices lies a circular, ninth-magnitude spot of light seen through binoculars and a small telescope on the Virgo side of the border.