Variable Star Nights
stars that make a difference
Some Astronomy by John O'Neill


Comet Johnson 2015 V2 on the night of 15-16 January 2017. See details.


Penumbral Lunar Eclipse on night of 10-11 February 2017. See details.


Icelandic Aurora on the night of 29-30 September 2016. See details and another picture.


Near-Earth asteroid 433 Eros passes close to M2, photographed on 30 August 2016. See details.


Spotless Sun, 3 July 2016. See details and larger image.


Bright Noctilucent Clouds, 3 and 23 June 2016. See details and larger images.


Large Sunspot, 24 May 2016. See details and larger image.


Transit of Mercury, 9 May 2016. See details and larger image.


Large near-Earth asteroid 2015 TB145 only 1.3 lunar distance away closest 31 Oct 2015. See full details and my animation.

All content and photos (unless stated) are by John O'Neill. © None may be reproduced without permission.
Variable Star Nights ( Site updated: 26 May 2017 (update history). Unless noted, all dates and times are in UT.

I have given talks for AAVSO, Cosmos Star Party, Cork AC, DIAS (Dunsink Obs.), IAA, IAS, IAS Astrofest, IFAS Solarfest, NIAAS, Rush AG and the Stellafane Convention (Vermont).