Derekscope

• A shadow transit of a Galilean moon does occur on Jupiter on 14 November 2025.
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• Specifically, Io’s shadow crosses Jupiter’s disk early that morning.
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Northern Light tonight – Wednesday 12th thru Thursday 13th November 2025

• Yes, there’s a strong Northern Lights alert for the UK tonight, Wednesday 12 November 2025.
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• The Met Office and British Geological Survey have issued a G5-level geomagnetic storm warning, meaning aurora visibility is likely across much of the UK — even as far south as London ~ weather permitting.
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• Link: Northern Lights Watch UK

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Callisto Disappears Behind Jupiter – a Rare Occultation

• In the early hours on Thursday 13th November, something extraordinary unfolds in the sky ~ Callisto, one of Jupiter’s largest moons, will be occulted (hidden behind the giant planet itself).
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• Visibility from the UK, Callisto is occulted by Jupiter between 1am and 5am ~ make sure you’re prepared before the event happens.
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• The Moon reaches its Last Quarter phase at 05:28 / 5.28am.
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• Approximately 47% of the lunar disk will be lit in the constellation Leo (The Lion).
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• Moonrise around midnight and moonset around 13:30pm.
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• Visible in the southern sky during the morning hours, especially before dawn.
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Two beautiful celestial pairings unfold on consecutive nights.

• Sunday 9 November 2025
  – Bright and unmistakable, Jupiter will be above and slightly to the left of the Moon in the constellation Gemini.
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• Monday 10 November 2025
  – the Moon will be below the Praesepe or Beehive Cluster (M44) in the constellation Cancer.
  – best viewed after midnight into early morning, between 2:00 and 5:00am.
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Algol
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• The bright variable star Beta Persei (Algol) reaches its minimum brightness at 18:13 pm in the early evening on Monday 10th November and will be visible from the UK.
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• Here’s a list of upcoming minimum brightness times for Algol – read more.
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Algol
The bright variable Star Beta Persei (Algol)
reaches minimum brightness.
(21:24 / 9.24pm)
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• The bright variable Star Beta Persei (Algol) reaches minimum brightness at 21:24 pm p21:24 m in the early evening on Monday 10th November and will be visible from the UK.
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• Here’s a list of upcoming minimum brightness times for Algol – read more.

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Moon & M45

• The Pleiades is bright enough to be seen without equipment, but the Moon’s glare may reduce visibility.
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• Using binoculars ~ highly recommended to resolve individual stars in the cluster and watch the occultation unfold.
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• For challenging that’s a great opportunity for wide-field shots or time-lapse sequences showing the Moon approaching and passing through the cluster.
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• Comet 24P/Schaumasse is on track to pass through Messier 44 (the Beehive Cluster) in Cancer between 7th and 10th November 2025, offering a rare and poetic alignment for UK observers.
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• The comet’s apparent magnitude is expected to be around +17, so it will require moderate to large telescopes and dark skies to observe clearly.
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• Try long-exposure astrophotography to capture the comet’s subtle glow against the glittering Beehive backdrop.
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• This is a rare!
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• Because Titan’s orbit aligns with Saturn’s equatorial plane only when Saturn’s rings are edge-on from Earth’s perspective.
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• This month – November, you can find Saturn in the constellation Aquarius, rising in the east during the early evening and setting in the west before dawn.