Sky was poor again tonight – largely clouded out except for a bright full Moon which shone through the cloud and one or two visible stars – including one very bright one almost directly overhead which successfully provided a bright point for me to use to focus my Sky Watcher Equinox Pro 80mm OTA/QHY10 camera/TS off axis guider/flip mirror 15/8/2019. Previously I had got sort of close to focus using a chimney on neighbour’s house but there is nothing like a star to do this properly. I tried a Bahtinov mask after getting closest focus by eye but for some reason I could not get that to show the spikes tonight….not sure why….something else to address on another day! Nevertheless, the focus I achieved tonight was sufficient to take a reasonable picture of the Moon – my first ever “proper” picture of a celestial object using a telescope with attached camera, apart from some photos taken with hand held smart phone at eyepiece in past.
With the TS OAG/Flip mirror between telescope and QHY10 camera, the focus point was noted to 15.5mm on the scale on the focuser of the Sky Watcher Equinox Pro 80mm OTA.