The front cover of BASIL shows Jocelyn Bell in 1968, holding the paper chart recordings with which she discovered the first pulsar. She is giving a talk to the BAS on 30 April 2021.
Solar system information includes planetary observing data, observing Asteroid 4 (Vesta) and recent lunar images from BAS member Andrew Grasemann.
Visible passes of the ISS, X-37B and the UK Prospero satellite are given for the month.
23 astronomical events and 35 observing targets for the month are listed.
April is a good month for observing the Virgo Galaxy Cluster and 14 observing targets in the Cluster are listed, along with location and observing tips.
BAS member Ryan Parle gives a teach-in on astrophotography post-processing, using his image of the Horsehead and Flame Nebulae.
Society News includes talks scheduled for April to June 2021 and information on the BAS fortnightly informal practical astronomy 'drop-in' sessions over Zoom.
