I’ve been thinking about getting another OTA to enable me to image at a higher magnification, but been a little worried about whether my mount and guide setup would support it. A few weeks back an old blue tube Skywatcher 200p OTA appeared on the SGL classified section for £50- it felt like a low risk way to find out.
As advertised, the tube has a few cosmetic marks, but the optics all seem to be good. Despite the impending Storm Gareth I really wanted to give it a go last night and see what how it would work. Collimation, balance and focus was easy enough (even though the focuser is a bit sticky), but the semi-cloudy conditions and the gusting winds causing the scope to jump around persuaded me to stick to the moon for my first effort.
Of the pictures below, the full disk is from my 600d with a 0.9 coma corrector; whilst the others are from stacked avi’s on my ZWO Barlowed to x3.2 with a bit of wavelet adjustment in Registax (I wrote that like I know what I’m doing in Registax, which I really don’t!). Finally there’s a little picture of the scope in action to record the moment!