Depending on the photo, the surrounding pattern looks like the pattern of water scattered by the sprinkler seen from directly above, but depending on the exposure, it looks like the sprinkler itself. This is the latter.

写真によっては周辺の模様が真上から見たスプリンクラーが撒き散してる水の模様にも見えるが、露出によってはスプリンクラーそのものの形に見える。これは後者の方である。

Place: Backyard East Pattaya (Bortle Class 6, Moon Phase 70.1%)

Date:2nd / Apr / 2021 0:32(UTC+7) Start

TS TSRC10T Carbon Truss Reduce x 0.67 (250mm F/5.4 FL/1340)mm

L-Pro 30 SubsX120sec Total 60minutes

Total 60 minutes　

OSC:RGB

Gain:120

CCD: ZWO ASI294MC Pro

Filter: Optolong L-Pro

Mount :iOptron CEM70G

Guide: SVBony 60mm F/4, ZWO ASI120MC-S

Controler: ASIAIR-Pro Dither

Pre-Processing APP Drizzle DL0.5 Int 2.0

Post-Processing PI,PS

Shot By Taro Seki Astropical.uk