NGC 6992 Eastern Veil nebula is a supernova remnant in constellation Cygnus  . The nebula is a cloud of heated ionized gas   .The analysis  of the emission from the nebula indicate the presence of sulfur , oxygen and hydrogen. The Veil nebula was discovered by William Herchel on 5 September 1784  and is about 2400 light years from Earth .

Astrophoto-equipment : 

telescope -MEADE 80mm triplet apo. series 5000 

mount -SKYWATCHER HEQ5 Pro. 

photo-camera - CCD ATIK 314L+ mono.

guide camera-  CMOS ZWO asi 120mm mono 

guide scope - Skywatcher 70mm/500mm 

filters -Astronomik HA 12nm , Olll 12nm 

exposure times 23 x 300 sec HA and 11 x 300 sec Olll .