The constitutionally adopted objectives of the Society are: (i) to foster the science of Astronomy; (ii) to organise observational field nights for the purpose of carrying out astronomical observation; (iii) to assist and give advice regarding astronomical instrumentation; and (iv) to participate in/co-operate with other scientific societies and groups with a similar scientific interest in astronomy.

[3] The Society is approved by the NSW Commissioner of Police for the purpose of an exemption from obtaining a laser pointer permit.

The committee is tasked with the total management of the affairs of the Society and aims to mix youth with experience.

Office bearers are elected by the membership at an Annual General Meeting, normally held in April each year.

The accompanying citation reads: "The Macarthur Astronomical Society has, in partnership with the Campbelltown Rotary Observatory, conducted astronomy talks and activities to bring the latest advances in physics, astrophysics and high technology to the community.

The Society instituted an annual Students Night in 2015, to encourage school children from Prairiewood High School to study the science of astronomy and report their research findings to the Society's Macarthur Astronomy Forum in December each year.

[18] If successful, the observatory would have been used for astronomical research, public outreach, astro-imaging and members private observing.