The Cygnus Lacuna is a supernova remnant whose explosion is estimated to have occurred tens of thousands of years ago. It is located in the constellation Cygnus. Its estimated distance is approximately 2,400 light-years.
Attached: The Great Lacuna NGC 6992
Photo taken in Portugal by Team ARO (website:https://astroaro.fr)
100 hours in HOOrvb from 09/07 to 20/09/2025
Set-up: FSQ 106 on AZEQ6 mount
ZWO 6200MM camera
PixinSight-Photoshop processing
