OASI is a society for people interested in astronomy. We are based at Orwell Park Observatory and Newbourne Village Hall, both situated near Ipswich, Suffolk. Members enjoy a wide range of interests in astronomy and include armchair astronomers, casual observers, and dedicated amateurs with specialist skills in visual and photographic observing, constructing telescopes, public education in astronomy and the history of astronomy.
Events
Fri 28 Nov 2025, 20:00, Zoom, Committee meeting via Zoom. All members are invited to attend.
Mon 01 Dec 2025, 20:00, Orwell Park Observatory, Taster evening. Places must be booked in advance by email: tour@oasi.org.uk.
Wed 03 Dec 2025, 20:00, Orwell Park Observatory, General observing for members of OASI.
Mon 08 Dec 2025, 19:30, Newbourne Village Hall, Newbourne meeting - beginners and new members welcome!
Observing targets for the month: Saturn and Uranus.
19:30 Doors open for quiz night!
Full events list, with contact details for further information.
[1/10] Spiral galaxy M33 in the constellation Triangulum. The galaxy lies at a distance of almost 3 million light years and contains approximately 40 billion stars. 23 November 2025. Andy Gibbs.
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[2/10] Images of comet C/2025 K1 (ATLAS) show that the nucleus has fractured into three fragments, following a very close perihelion passage. Nigel Evans.
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[3/10] An aurora was visible above the northern horizon around 04:20 on 13 November. The above image was captured by a north-facing meteor camera. Nigel Evans.
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[4/10] Comet C/2025 R2 (SWAN) imaged from Orwell Park Observatory on 25 October 2025, during one of our open evenings. Paul Whiting, FRAS.
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[5/10] Our 2025 open evenings (held 25-25 October) were a great success! Approximately two hundred and fifty visitors attended on the first evening, and a further 200 on the second and enjoyed views of Saturn, Comet Lemmon (C/2025A6), Comet Swan (C/2025R2), the Andromeda Galaxy (M31) and star clusters (M11 and others) through a variety of telescopes.
More. Our next open evenings are in 2026 TBC.
[6/10] A matter ejection event (arrowed) in the tail of Comet C/2025 A6 (Lemmon). 09 October 2025. Nigel Evans.
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[7/10] OASI observers along with many members of the public gathered on Cliff Road, Felixstowe, hoping to observe the Moon, in total eclipse, rising above the eastern horizon, on 07 september 2025. Unfortunately, cloud prevented visibility of total phase of the eclipse, but breaks in the cloud enabled observation of the subsequent partial phase.
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[8/10] Spiral galaxy NGC891, seen edge-on in the constellation Andromeda. 25 August 2025. Paul Whiting, FRAS.
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[9/10] The Sun in H
α light. 10 August 2025. Steve McElvanney.
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[10/10] OASI attended the Latitude Festival on 25-26 July to run sessions on solar observing and night-time observing. On 25 July, there were breaks in the cloud enabling some lucky festival-goers to use the telescopes to advantage. By 11.00pm, the sky was clouded out apart from quick glimpses of the brighter stars. Photos, L->R, T->B: observing the night sky while Sting's pyrotechnics illuminate the background, setting up the OASI stand, some lucky individuals observing the Sun through solar telescopes, Professors Lintot and Fong holding forth.
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