NGC 6992 "Eastern Veil"
Telescope: RCOS 14.5” at Rowe, NM
Camera Filters: Hydrogen, Oxygen, Sulfur
Total exposure: 13 hours
Image width: 1/2 degree
The Veil: Believed to be remnants of supernova explosion 80,000 to 50,000 years ago. Filaments suggest thin shock fronts seen edge-on. Dust and gas radiate most prominently in OIII band. Visual observations through OIII filter show wispy nebulosity, even in 8" telescope. In X-ray spectrum, the Veil is biggest and brightest object observed from earth.