I have been racking my brains to work out what GSO means. It's Friday arvo and I am at the best of times, a bit stupid - being a new chum.
Someone put me out of my misery 'cos I have just ordered one. Hope it's GSO!
General Sky Optics
Gorgeous Star Operator
Grand Stargazing Organiser
Great Simple Orthoscopic gismo
I give up
