The Astrospheric app forest fire smoke distribution map across North America for Sunday night, July 28, 2024. Purple and red indicate the most severe smoke loading in the sky overhead. Many weather forecasts will predict clear, cloudless skies – but observers and imagers will find the fainter celestial objects significantly dimmed. I highly recommend the…
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This image from the Wide Field Imager attached to the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory shows the spectacular globular star cluster Messier 4. This great ball of ancient stars is one of the closest of such stellar systems to the Earth and appears in the constellation of Scorpius (The Scorpion) close to…
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This image of the Wild Duck Cluster, also known as Messier 11 and NGC 6705, was captured by the European southern Observatory. Note the blue and yellow stars, and the odd red one. The entire photograph covers about the size of the full moon in the sky, making M11 one of the easiest-to-see Summer Milky…
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This beautiful annotated image of the summer Milky Way arching over the Great Wall of China was captured by Steed Yu. The bright star at centre far right is Antares. It’s little claw stars shine to its upper right. The dark dust patches and lanes are apparent. It was the NASA APOD for July 3,…
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This image of the Wild Duck Cluster, also known as Messier 11 and NGC 6705 in Scutum covers a patch of sky equal to the diameter of the full moon. The magnitude 6.3 open star cluster is visible with unaided eyes and through binoculars and telescopes, despite its 6200 light-year distance. It was taken using…
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The Ghost of the Moon planetary nebula aka NGC 6781 in Aquila, photographed by the European Southern Observatory 3.6-m Telescope at the La Silla Observatory in the Atacama Desert, Chile. The image spans 4.5 arc-minutes of sky, or 15% of the full moon. The object is an expanding sphere of gas – the outer shells…
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