BX Andromedae / BX And
Light curve of the EB type eclipsing binary BX Andromedae / BX And from 69 images taken with the Cluster Camera of the Bradford Robotic Telescope between 2013 September 1 and 2016 October 1.
These observations lead to the following phase diagram.
A primary minimum of BX Andromedae was observed from Somerby on 2017 January 2 with the 2" Titan at Somerby Observatory, photometry from 619 unfiltered images.
The scatter is larger than ideal, but weather conditions and low altitude interfered.
The scatter is larger than ideal, but weather conditions and low altitude interfered.
A secondary minimum was observed on 2023 November 10 with the 2" Titan at Somerby Observatory, photometry from 626 unfiltered images.
The above three sets of data have been combined into the following light curve. The black data points are from the Bradford Robotic Telescope observations, the red data points are the primary minimum of 2017 January 2 and the blue data points are the secondary minimum of 2023 November 10.
In the following light curve and phase diagram, the BRT data were arbitrarily brightened by 0.034 mags so that the three sets of data lined up more accurately. It's not clear why this was necessary as the same comparison star was used throughout.
The best fit period to this data is 0.610105d. This compares to 0.6101119d (GCVS, AAVSO VSX) (accessed 2023 November 18)
This is an example of a primary minimum observed visually with 15x80 binoculars from Leicester.
[ Page updated 2023 November 18 ]