Analysis of the emissions from the nebula has shown the presence of oxygen,sulphur and hydrogen.The nebula was discovered by
William Herschel in 1784.The shock waves forming the nebula are part of a shell visible only when viewed edge-on giving the filamentous appearance(Wikipedia)
The camera a SxTrius 694,on a Takahashi 106 refractor.
Sharpless 101 is a H11 region in the constellation Cygnus lying about 6000 light years from Earth.
These images are the result of 6x600s exposures each for Ha, O111 and S11 narrowband filters taken on 14.0518 from Hatfield Woodhouse using a SX Trius 694 camera on a Takahashi 106 refractor.The yellowish version uses the Hubble palette assigning Ha to green,O111 to blue and S11 to red.