Observations By Members Of OASI
| Observation | Observer | Date |
| Star clusters | Various | 1994 - 12 January 2021 |
| Fireballs & satellites | Alan Smith, James Appleton | 23 June 2018 - 09 January 2021 |
| The Sun | Various | 25 January 1984 - 31 December 2020 |
| Variable nebulae | Mike Harlow | 08 April 2008 - 30 December 2020 |
| Planetary and lunar groupings | Various | 01 June 1980 - 25 December 2020 |
| Novae & supernovae | Various | 17 September 1978 - 26 November 2020 |
| Planets | Various | 19 October 2000 - 19 November 2020 |
| Comet C/2020 M3 (ATLAS) | Nigel Evans | 18 November 2020 |
| Starlink satellites | Nigel Evans et al | 04 January - 04 November 2020 |
| Martian moon Deimos | Nigel Evans | 10 & 26 October 2020 |
| Near Earth Objects (NEOs) | Nigel Evans, Mike Harlow | 07 January 2008 - 24 September 2020 |
| Nebulae | Various | 1994 - 21 September 2020 |
| 2020 Perseid meteor shower | Various | 28 July - 13 August 2020 |
| International Space Station (ISS) | Martin Cook et al | 06 August 2013 - 11 August 2020 |
| Solar activity | John Hughes | 26-31 July 2020 |
| Comet C/2020 F3 (NEOWISE) | Various | 06-30 July 2020 |
| Noctilucent clouds | Various | 28 June 1993 - 05 July 2020 |
| Passage of the Dragon Crew Capsule | Nigel Evans | 30 May 2020 |
| Comet C/2019 Y4 (ATLAS) | Nigel Evans | 17 March - 20 May 2020 |
| Comet C/2020 F8 (SWAN) | Nigel Evans | 20 May 2020 |
| Galaxies | Various | 1994 - 15 April 2020 |
| Close approach of Venus to the Pleiades | Martin Cook, Nigel Evans | 31 March - 04 April 2020 |
| Kuiper belt objects | Mike Harlow, Nigel Evans | 23 May 2009 - 26 March 2020 |
| Comet C/2017 T2 (PanSTARRS) | Mike Harlow, Nigel Evans | 29 November 2019 - 24 March 2020 |
| Geostationary satellites | Nigel Evans | 08 October 2004 - 02 March 2020 |
| Lunar penumbral eclipse | Roger Driver, Andy Gibbs | 10 January 2020 |
| Solargraph | John Hughes | 22 June - 22 December 2019 |
| Globular cluster G1 in orbit around M31 | Nigel Evans | 02 December 2019 |
| Transit of Mercury | James Appleton et al | 11 November 2019 |
| Cataclysmic variables | Mike Harlow | 23 March - 07 September 2019 |
| Meteors | Various | 26 October 1973 - 13 August 2019 |
| Australian skies | Neil J Short | 19 September 2019 |
| Atmospheric phenomena | Various | 01 June 2001 - 16 July 2019 |
| Lunar partial eclipse | Various | 16 July 2019 |
| Solar total eclipse | Paul Whiting, FRAS | 02 July 2019 |
| Evolution of a solar prominence | Martin Cook | 19-22 April 2019 |
| Grazing lunar occultations | Various | 21 October 1974 - 26 March 2019 |
| Comet C/2018 Y1 (Iwamoto) | Nigel Evans | 26 February 2019 |
| Stellar proper motions | Nigel Evans | 13 September 2015 - 24 February 2019 |
| Lunar total eclipse | Various | 21 January 2019 |
| The Moon | Various | 13 November 1983 - 14 January 2019 |
| Aurorae | Various | 13 March 1989 - 13 January 2019 |
| Comet 46P/Wirtanen | Various | 06 February 2008 - 24 December 2018 |
| Southern star fields seen from La Palma | Nigel Evans | 16 May 2018 |
| New Zealand skies | Neil J Short | 07-22 April 2018 |
| Double quasar, QSO0957+561 | Nigel Evans | 17-18 April 2018 |
| Motion of asteroid 1981 Midas | Nigel Evans | 19 March 2018 |
| Motion of asteroid 2017 VR12 | Nigel Evans | 07 March 2018 |
| Variable star Mira (ο Cet) | Joe Startin | 18 August 2012 - 12 February 2018 |
| Full moon and lunar total eclipse | Various | 31 January 2018 |
| Motion of asteroid 3200 Phaethon | Nigel Evans | 16 December 2017 |
| Occultation of UCAC4-410-143659 by Triton | Mike O'Mahony | 05 October 2017 |
| The Milky Way | David Murton et al | 31 July 2006 - 25 August 2017 |
| Solar total eclipse | Paul Whiting, FRAS, et al | 21 August 2017 |
| Supermoon | David Murton, Mike O'Mahony | 13 November 2016 |
| Constellations and star trails | Various | 31 October 1997 - 30 September 2016 |
| Satellites | David Murton, Kevin Fulcher | 08 August 2015 - 04 June 2016 |
| Transit of Mercury | James Appleton et al | 09 May 2016 |
| Evolution of solar prominences | David Murton | 02-03 April 2016 |
| Solar total eclipse | Paul Whiting, FRAS, Nigel Evans | 09 March 2016 |
| Comet C/2013 US10 (Catalina) | David Murton | 09 December 2015 - 15 January 2016 |
| Variable stars | Mike Nicholls | 04 July 1980 - 29 December 2015 |
| Lunar total eclipse | David Murton et al | 28 September 2015 |
| Project Cepheus | Mike Harlow | 20 May - 11 August 2015 |
| Solar total eclipse | Andy Gibbs et al | 20 March 2015 |
| Solar analemma | Alan Smith | 18 February 2014 - 18 February 2015 |
| Comet C/2014 Q2 (Lovejoy) | David Murton et al | 03 January - 18 February 2015 |
| Winter 2014-15 sky darkness survey. Introduction Results Google map of BDI | Paul Whiting, FRAS | 19 August 2014 - 26 January 2015 |
| Albireo | Kev Fulcher | 25 September 2014 |
| Comet C/2014 E2 (Jacques) | David Murton | 16-23 August 2014 |
| Distance of Mars | Mike O'Mahony | 01 April - 17 July 2014 |
| Uranus, Neptune and Pluto | Mike Harlow | 28 December 2013 - 02 June 2014 |
| Observations of Galilean eclipses to investigate the speed of light by Rømer's method | James Appleton et al | 01 November 2012 - 18 May 2014 |
| Spectroscopic observations | Mike Harlow, Mike O'Mahony | 09 January - 13 November 2013 |
| Comet C/2011 L4 (PANSTARRS) | Mike Harlow, Andrew Robertson | 13 March - 14 May 2013 |
| Comet C/2012 S1 (ISON) | Mike Harlow | 17 January - 02 May 2013 |
| Solar total eclipse | Paul Whiting, FRAS, Nigel Evans | 13 November 2012 |
| Comet 168P/Hergenrother | Mike Harlow | 14 October 2012 |
| Transit of Venus | James Appleton et al | 06 June 2012 |
| Astronomical images on Flickr | Ben Jarvis | 2011 |
| Sketches of Jupiter during its 2011-12 apparition | Neil Morley, Dale Holt | 20 October - 23 November 2011 |
| Lunar total eclipse | Paul Whiting, FRAS | 15 June 2011 |
| Solar partial eclipse | Ted Sampson | 04 January 2011 |
| Solar total eclipse | Paul Whiting, FRAS | 11 July 2010 |
| Opposition loop of Mars | James Appleton | 17 January - 16 June 2010 |
| Planetary nebulae Abell 2 and Abell 3 | Mike Harlow | 20 September 2009 |
| Solar total eclipse | Paul Whiting, FRAS | 22 July 2009 |
| Comet 29P/Schwassmann-Wachmann 1 | Mike Harlow | 24 January 2008 - 03 January 2009 |
| Comet C/2006 OF2 (Broughton) | Mike Harlow | 02-11 October 2008 |
| Solar total eclipse | Paul Whiting, FRAS, et al | 01 August 2008 |
| Comet C/2008 C1 (Chen-Gao) | Mike Harlow | 04 February - 31 March 2008 |
| Comet 17P/Holmes | Mike Harlow et al | 27 October 2007 - 26 February 2008 |
| Comet 8P/Tuttle | Mike Harlow | 15 November - 12 December 2007 |
| Lunar occultations of planets | Various | 02 March 1974 - 22 May 2007 |
| Lunar total eclipse and the Danjon Scale of brightness | Paul Whiting, FRAS et al | 03 March 2007 |
| Naked eye & binocular observations of Mercury | James Appleton et al | 02 - 11 February 2007 |
| Comet C/2006 P1 (McNaught) | Mike Harlow | 10 January 2007 |
| Comet C/2006 M4 (Swan) | Mike Harlow | 02 November 2006 |
| Solar total eclipse | Paul Whiting, FRAS | 29 March 2006 |
| Solar annular eclipse | Paul Whiting, FRAS, Nigel Evans | 03 October 2005 |
| Comet C/2004 Q2 (Machholz) | Mike Harlow, Dave McCracken | 26 December 2004 - 12 January 2005 |
| Transit of Venus | James Appleton et al | 08 June 2004 |
| Gemini observing project | James Appleton et al | 28 December 2003 - 01 March 2004 |
| Solar annular eclipse | Dave McCracken et al | 31 May 2003 |
| Transit of Mercury | James Appleton et al | 07 May 2003 |
| Pleiades observing project | James Appleton | 18 October - 09 December 2002 |
| Solar total eclipse | Nigel Evans, Paul Whiting | 04 December 2002 |
| Analysis of lunar occultations | James Appleton | 1999 - 2002 |
| Comet 153P/Ikeya-Zhang | Nigel Evans | 07-09 April 2002 |
| Solar annular eclipse | Mike Harlow et al | 14 December 2001 |
| Solar total eclipse | Mike Harlow, Sue Brown | 21 June 2001 |
| Space shuttle | Nigel Evans | 11 February 2000 & 16-17 February 2001 |
| Lunar total eclipse | Nigel Evans | 09 January 2001 |
| Solar active region AR9169 | Pete Richards, Nick Sullivan | 25 September 2000 |
| Leonid meteor shower | Neil Morley et al | 17-19 November 1999 |
| Solar total eclipse | Nigel Evans et al | 11 August 1999 |
| Leonid meteor shower | Mike Harlow et al | 16-18 November 1998 |
| Solar annular eclipse | Mike Harlow | 22 August 1998 |
| Solar total eclipse | Mike Harlow | 26 February 1998 |
| Mutual phenomena of Galilean satellites | James Appleton | 25 September 1997 |
| Comet C/1995 O1 (Hale-Bopp) | Mike Harlow et al | 15 October 1996 - 31 March 1997 |
| Comet C/1996 Q1 (Tabur) | Mike Harlow | 18 October 1996 |
| Solar partial eclipse | Mike Harlow | 12 October 1996 |
| Lunar total eclipses | Mike Harlow | 03 April & 27 September 1996 |
| Comet C/1996 B2 (Hyakutake) | Mike Harlow et al | 07-31 March 1996 |
| Solar total eclipse | Pete Richards | 11 July 1991 |
| Comet C/1990 K1 (Levy) | David Payne, Roy Adams | 13 July - 21 August 1990 |
| Occultation Of 28 Sagittarii By Titan | Alan Smith, Martin Cook | 03 July 1989 |
| Tour of the solar system in one evening | David Payne | 03-05 May 1989 |
| Evolution of a sunspot group | Roy Adams | 22 October - 22 November 1988 |
| Mars at opposition | David Payne | 01 October - 16 November 1988 |
| Sunspots | Roy Adams | 21 January 1988 |
| Sagittarius | David Payne | 03-04 July 1987 |
| Comet C/1986 V1 (Sorrells) | Mike Harlow | 12 December 1986 |
| Lunar total eclipse | Mike Harlow | 17 October 1986 |
| Comet C/1986 P1 (Wilson) | Mike Harlow | 10 August - 07 September 1986 |
| Pluto | David Payne | 26 April 1984 - 18 May 1986 |
| Comet 1P/Halley | Various | 05 October 1985 - 17 April 1986 |
| Miscellaneous observations | David Payne | February - March 1986 |
| Fireballs | David Barnard et al | 30 July 1973 - 12 January 1986 |
| Start of a new sunspot cycle? | Roy Adams | 24 April 1985 |
| Mercury, Venus & Mars | David Payne | 17 March 1985 |
| Solar partial eclipse | Roy Gooding | 30 May 1984 |
| Venus | Carl Cornish | 16 February - 28 December 1983 |
| Jupiter & Saturn | Carl Cornish | 11 June - 20 August 1983 |
| Comet C/1983 H1 (IRAS-Araki-Alcock) | David Barnard | 07-10 May 1983 |
| Sunspots | C R Baldry | 10 February - 23 March 1980 |
| Comet 38P/Stephan-Oterma | Roy Adams | 30 November 1980 |
| Miscellaneous observations | Robert Townsend | 10-11 May 1980 |
| Weather phenomena | Roy Cheesman, Alan Smith | 03 March 1980 |
| Sunspots | Roy Adams | 22 September - 24 October 1978 |
| Solar partial eclipse | Alan Smith | 29 April 1976 |
| Lunar total eclipse | Alan Smith | 18 November 1975 |
| Sunspots | Roy Cheesman, John Deans | 25 June - 23 August 1975 |
| Transient Lunar Phenomena | John Deans | 21 February - 19 June 1975 |
| Appulse of Saturn and SAO 79057 | John Deans | 11 January 1975 |
| Variable stars | Tom Cardot, David Barnard | 20 June - 14 November 1974 |
| PAGEOS Balloon-Satellite | Roy Cheesman | 18 October 1972 |