Orwell Park Mansion and Observatory
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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.

Email for more information: info@oasi.org.uk



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Night Sky Notes

Current edition.

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Observatory Visits


Visit Orwell Park Observatory and see the historic Tomline Refractor.


Join OASI or renew membership.


Wed 17 Jul 2024, 20:15, Orwell Park Observatory, General observing for members of OASI.

Thu 18 Jul 2024, 20:00, Zoom, Monthly Zoom meeting.

Sat 20 Jul 2024, 13.00-20:00 (possibly later), Newbourne Village Hall, Summer picnic, open to all members of OASI and their guests. Poster with further details.

Mon 22 Jul 2024, 19:30, Newbourne Village Hall, Newbourne meeting - beginners and new members welcome!
Sky Notes by Bill Barton, FRAS.
Astro News by Paul Whiting, FRAS.

Full events list, with contact details for further information.


Recent activities and observations

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[1/12]   Eastern (left) and western (right) arcs of the Veil Nebula (NGC6960, NGC6992 and NGC6995). Paul Whiting, FRAS. More.
[2/12]   Noctilucent cloud seen from west Ipswich, the first report of the phenomenon by a member of OASI since late summer 2022. 23 June 2024. Andy Gibbs. More.
[3/12]   The weather during the Mendlesham Village Fayre on 22 June 2024 was not conducive to solar observing, with the Sun making only brief appearances. Nonetheless, an image of the solar disk, showing five active regions (AR13712, AR13713, AR13716, AR13719, AR13720, AR13721 and AR1372), was captured using OASI's Seestar S50 "smart" telescope. Paul Whiting, FRAS. More.
[4/12]   OASI attended East Suffolk Wireless Revival (ESWR) 2024 to do solar observing. The weather was not good, with heavy rain showers and a very strong breeze. However, between breaks in the weather, it proved possible to show visitors the Sun in white light and Hα. Bill Barton, FRAS. More.
[5/12]   The solar disk in Hα light shows granulation, active regions, faculae and limb prominences. The colouration is inverted to make the prominences more easily visible. 02 June 2024. John Hughes. More.
[6/12]   Resembling the "W" of Cassiopeia, star cluster Kemble 2 is also known as "Mini Cassiopeia". It is located in the constellation Draco, approximately 1° SE of χ Dra. The asterism was named by the Franciscan friar and amateur astronomer, Father Lucian Kemble, in August 1994. 19-20 May 2024. John Hughes. More.
[7/12]   OASI's first event to mark the 150th anniversary of Orwell Park Observatory was to host the BAA Historical Section meeting on 18 May 2024 in Ipswich. Following the meeting, several members of the BAA and OASI visited the house and grave of Sir George Biddell Airy (1801-1892), 7th Astronomer Royal, in Playford, north of Ipswich.
[8/12]   The solar disk in Hα light shows numerous limb prominences, including a large ejection of material from active region AR13664 (on the solar limb, lower right). 13 May 2024. Martin Cook. More.
[9/12]   A geomagnetic storm caused an aurora to be visible widely over the UK on the night of 10 May 2024. Many members of OASI witnessed the phenomenon. Images (L-R, T-B): Andy Gibbs, Nigel Evans, Mike O'Mahony, John Hughes, Mike Such (montage), Martin Cook, Steve McElvanney, Toni Smith and Paul Whiting (courtesy of professinal photographer). More.
[10/12]   The Daniel K Inouye Solar Telescope on the summit of Haleakala, Maui, Hawaii. Photographed on a sunset tour to the mountain. 20 April 2024. Neil J Short. More.
[11/12]   LHS: the Sun imaged in white light with a ZWO Seestar S50 "smart" telescope. The solar disk shows granulation, faculae and sunspots. RHS: solar image from Spaceweather.com enabling identification of sunspot groups. 17 April 2024. Stephen McElvanney. More.
[12/12]   The total solar eclipse of 08 April 2024, observed from Tiffin, Ohio. Neil J Short. More.