NGC 6995 – The Bat Nebula is a portion of a bigger nebula called Veil Nebula,. a supernova remnant (SNR) is the structure resulting from the explosion of a star in a supernova. The Veil Nebula consists of two loops, called Eastern Veil and Western Veil Nebula. The Bat nebula is part of the Eastern Veil Nebula

The nebula was discovered on 5 September 1784 by William Herschel. He described the western end of the nebula as “Extended; passes thro’ 52 Cygni… near 2 degree in length”, and described the eastern end as “Branching nebulosity … The following part divides into several streams uniting again towards the south.” When finely resolved, some parts of the nebula appear to be rope-like filaments. The standard explanation is that the shock waves are so thin, less than one part in 50,000 of the radius,[17] that the shell is visible only when viewed exactly edge-on, giving the shell the appearance of a filament. At the estimated distance of 2400 light-years, the nebula has a radius of 65 light-years (a diameter of 130 light-years). The thickness of each filament is 1⁄50,000th of the radius, or about 4 billion miles, roughly the distance from Earth to Pluto. Undulations in the surface of the shell lead to multiple filamentary images, which appear to be intertwined.

Shooting system:
Telescope: Skywatcher PDS 250/1280 – Camera: ZWO ASI 533 MC-Pro – Guide tube: 60 / 240mm – Guide camera: ZWO ASI 120 MCS – Mount: Skywatcher EQ6-R

Shooting data:
Taken on 2022/090/05 – 16 shots of 300 ″ – Temp -10º – Dark Frames – Bias Frames – Flat Frames

Processing:
Processing done entirely with PixInsight