A supermoon occurs when the full moon coincides with the moon's closest approach to Earth in its orbit, making the moon appear a brighter and closer than normal.
Kirk said it is not just herself and Lachie who are into photography.
"The whole entire family are all into photography on a big scale," she said. "Lachie's speciality is night photography and is looking forward to getting some Milky Way photos.
"My speciality is taking picture of people, while my husband is a lover of landscape photos. The other kids love a little bit of everything.
Kirk added: "We as a family have many more photo planned of what we'd like to capture next."