Welcome to my
Variable Star Pages
The science of Astronomy is unique. A great deal of astronomical research depends on the work of highly skilled amateur astronomers that provide a pivotal role in the constant monitoring of variable stars.
I observe and monitor variable stars particularly the cataclysmic (explosive ) variable stars (CVs) for outbursts. Recorded observations are then sent to various variable star organizations which include, the American Association of Variable Star Observers (AAVSO), the research section of the Royal Astronomical Society of New Zealand, Variable Stars South (VSS) and the Variable Star Network (VSNET) a global professional-amateur network of researches in variable stars.
These pages tell my story, show a selection of light curves, links to articles, dramatic events, transient objects and cataclysmic variables (CVs).
The current observations page will show my latest observations, outbursts detections and activity on variable stars.
Latest outbursts detected
June 20, 2018
AQLUU 180620.753 115 outburst
AQLV725 180620.698 139 superoutburst
AQLV1047 180620.699 155 superoutburst
AQLV1233 180620.696 163 outburst
CAPSY 180620.754 140 outburst
INDCS 180620.712 126 outburst
OCTBE 180620.710 154 superoutburst
OCTDT 180620.727 122 superoutburst
PEGHX 180620.760 136 outburst
SCLCC 180620.706 132 outburst super?
SCOV893 180620.691 124 outburst
SGRV4140 180620.787 165 superoutburst?
TRAFL 180620.687 154 superoutburst
TUCVW 180620.710 156 outburst
ASASSN-16jx 180620.732 151 outburst
ASASSN-14fz 180620.789 145 superoutburst
The XMM-Newton space observatory will be observing the dwarf nova GW Librae on Aug.31 / Sept.1, 2017. The Space Telescope Science Institute (STScI) needs constant updates on the current state of GW Lib to make sure it is at minimum. My latest observation sent at magnitude 16.5 shows it is around minimum.
GW Lib was discovered in 1983 as a 9th magnitude object. On April 12, 2007 I noticed GW Lib was rising to outburst, the first recorded outburst in 24 years since the discovery! GW Lib has had no further outbursts. My visual light curve of the 2007 outburst which lasted over 70 days. More here.
My paper was published with Peredur Williams, Institute for Astronomy, Royal Observatory, Edinburgh on ” Observation of a Deep Visual “Eclipse” in the WC9-Type Wolf-Rayet Star, WR 76 ” One of the deepest found so far in these types of stars. A real challenge visually as the eclipse is well below 17.0 magnitude.
My paper was published October 2016 with Mike Simonsen on UY Puppis – A New Anomalous Z Cam Type Dwarf Nova. UY Pup is now one of only four known anomalous Z Cam stars!
My paper published on the discovery of the first ever recorded eclipse in the Wolf-Rayet star WR 53. After 5 years of constant monitoring we now have a new variable star!
Wolf-Rayet Star WR 53 – Added to the International Variable Star Index July 2015.
My paper published on the first-ever standstill of OQ Carinae after 14 years of study.
Discovery story on OQ Carinae!
Eye on the sky
Amateur astronomers are making a unique contribution to science’s understanding of the universe, reports Marilyn Moore