BTW in case you want to check conditions the readings from Mt Boyce weather station:
http://www.bom.gov.au/products/IDN60...01.94743.shtml
are close to the conditions at the strip (Mt Boyce is west of Blackheath and a tad higher at 1100m).
Right now a stiff westerly 20-30 knots ... ouch.
The scopes are a Skywatcher f/15 and IM Alter M703 which is f/10, on an altaz mount. Good for outreach occasions.
Heading for Turramurra golf course for a quick look tonight despite the gale, at least to align the scopes..