M15

The globular cluster was shot in the L channel from a balcony in Moscow with an Askar 103apo using the 1x lucky technique (2-sec subs), totaling 2 hours collected.

Color was added from Uzunovo (south of Moscow Oblast) with a Newton 250 f/3.6, 30 minutes per channel, shot by Dima (smol69).

The green (emerald) star at 11 o'clock from the center turned out to be a tricky puzzle for many. Let me say right away, this is not a processing error, which is confirmed by the color of the other stars — it is quite accurate. I won't write the solution, I'll only give a hint: emerald stars don't exist, everyone knows that, and this star would never have come out emerald on a color camera. The whole trick is in shooting color with a monochrome camera through RGB filters.

Shot August-September 2026.