The Seagull nebula

 

 

Imaged by Jean-Yves Beninger from Singapore on 23 February 2019

AP130 and QSI 683wsg-8 camera, H alpha filter

AP Mach1 mount

 

It is believed that most of the star formation in the Seagull Nebula region were induced by the explosion of a supernova. Several clues support this hypothesis:

- the semicircle shape on the right (south) side of the image forms two sides of an open cavity with a diameter of about 3 degrees;

- the absence of bright stars within this bubble;

- and finally, the evidence of the expansion of the bubble itself, composed of neutral hydrogen and observable in the maps drawn at this wavelength, very clear in the color image below.

 

 

 

 

Imaged by Jean-Yves Beninger from Singapore on 23 and 25 February 2019

AP130 and QSI 683wsg-8 camera, H alpha, R, G and B filters

AP Mach1 mount