Oh well, it's only takes years of trial and error studying various techniques and inhuman quantities of patience. Here's 2000 hours compressed to 30 seconds. 24 inch (62 cm) diameter f/3.4 paraboloid primary mirror.

Precisely! These satellites are simply pinhole cameras producing an image of the sun, which at 600 km distance is 5 km in diameter. A "giant" 18-meter reflector is an imaging optic of focal ratio f/33333. That's not solar power boosting. It's a brighter than usual Iridium flash!

Assuming a rubble pile with a density of 1800 kg/cubic metre, the gravitational acceleration on its surface is 2,77e-6 metres per second squared. Spinning once in five minutes, the centrifugal acceleration is 870 times more than gravity. It couldn't exist as a rubble pile. Seems to be a solid body.

Since I recently retired, I can gleefully work all day figuring and testing my 62 cm (24 inch) cellular primary mirror. Having produced a good spheroidal figure, it's finally ready to parabolize. Amazingly, this is Norway's largest optical telescope. 🔭

Rho Ofiuchi cloud complex and globular cluster M4. Even with 30 minutes or less exposure in all four channels, this region is bright enough to give a pleasing, though noisy result. There is of course no light pollution in the Kalahari Desert. 🔭 youtu.be/O73KfQrsFqA?...

The Soul Nebula. 8.5 hours of Narrow-band exposures with a 12 cm refractor and a cooled (-25C), mono KAF-16803 sensor. Clear autumn skies are rare here in southwest Norway. That means there's a lot of time to process images, but little time to acquire images! 🔭 youtu.be/JqQJQ3s_p1o?...