SH2-115/116

The shot depicts an emission nebula visible in the Swan constellation about 7500 light years away.

It is located in the northern part of the constellation, about 2.5° to the northwest of the bright star Deneb; the most ideal period for its observation in the evening sky falls between July and December.

This is a region H II of a significant extension by an oval shape and crossed northwest-southeast by a dark band that apparently divides it into two equal parts: the eastern part is dominated by the presence of a small open cluster, known as Berkeley 90, resulting in physically associated.

In the framed field you can also see the small nebula always emitting SH2-116.

This nebula has a circular shape, to the point that in the Sharpless catalogue it is indicated as a possible planetary nebula. However, a 1991 study clarified that this is actually an H II region.

Light 183 x 300” filter: Optolong L-Ultimate

Camera: Asi 294 mc pro

Telescope: Sharpstar 94 EDPH reduced to 410 mm F/4.4

Guide camera: Asi 120 mini

Guide scope: 60 – 320 mm

Mount: Skywatcher Eq 6-r Pro

Acquisition: Asiair Plus

Software: DSS - Pixinsight – Photoshop

Shots: 22-23/08/2024

Location: Torricella (TA) ITALY

Average moon phase: 85,65%

Author: PRO’ GIACOMO.