Aglaopus centiginosa has also been recorded in the ACT. It has a darker and has a more angular termen in both wings, and the dark medial line varies from thick to absent in both. A. centiginosa is smaller on the average (max 25cm apex to apex), but the size ranges overlap, as do the background colours. It's tempting to think the outward bend in the termen of the fw in this photo matches A. centiginosa better, but it may be an artefact of the forewing not being held flat.
Thanks John For being the first to add this species to Canberra Nature Map. In case you are worrying or wondering it is absolutely fine to load images to both Canberra Nature Map and INaturalist - as the two platforms both feed the Atlas of Living Australia - which has a program for detecting and removing duplicates. Cheers Michael Mulvaney
The second photo has now been uploaded onto CNM. They were taken at the same location but at different times and so it has been put in as a seperate sighting.