IC4592 Blue Horse Nebula
The Blue Horse Nebula is a reflection nebula located about 400 light-years from Earth. Stretching about 20 light-years in length, it is part of the larger Rho Ophiuchi complex of reflection and emission nebula. IC4592 consists mostly of dust particles and is illuminated by bright star Nu Scorpii, seen at the center-left as the horse's eye. Part of another reflection nebula, IC4601, surrounds the bright star at the top-right corner. North is at the bottom.

Scope/Mount: StellarVue SV70T Refractor with SFFR-70APO Focal-reducer/Field-flattener, Celestron CI-700 Mount
Camera: ZWO ASI1600MMC monochrome with ZWO LRGB filters
Guiding: QHY5L-IIM through Orion Thin OAG, PHD guiding software
Exposure: L (40) 120 sec @ gain=139, RGB: each channel (10) 120 sec @ gain=139
Software: Nebulosity, PhotoShop CS2
Comment: 05-23-2020, Tierra del Sol, CA, slight dew.