NGC 1788 is a reflection nebula in the constellation of Orion.
It is rather sharply defined on its southwest perimeter where it is flanked by the dark nebula known as Lynds 1616.
Lynds 1616 is apparently part of NGC 1788. The brightest involved star is 10th magnitude. (WIKI)
The lower dark nebula is Lynds 1615.
Many galaxies are hidden in the image - can you see the chain of galaxies at the left?

Imaged with Boren-Simon 10" F/2.8 POWERNEWT Astrograph.
SBIG ST8300M camera with FW5 filterwheel and BAADER HA-LRGB filters.

L = 70 minutes
RGB = 14 minutes each (BIN 2x2)
Total of 112 minutes.

Imaged from the NEGEV desert in ISRAEL