The Veil Nebula in Cygnus is the remnant of a supernova that occurred about 35,000 years ago. We see fragments of an expanding shell of heated gasses. Of all of the large objects in the sky, the Veil has the most prominent bluish-green nebulosity due to fluorescence of ionized oxygen-III.

This image was composited into the September image of the 2003 RASC Observer's Calendar.

• Object: Veil Nebula
• Distance: 2,500 light years
• Size: 100 light years
• Exposure: 90 minutes @ f/6.7
• Telescope: Astro-Physics 130 EDF
• Mount: Astro-Physics 600E QMD, tripod
• Guiding: SBIG ST-4 @ 700mm (A1 @ 0.5x)
• Camera: Pentax 67
• Film: Kodak PPF 400 (unhypered)
• Location: Groton, NH
• Date: 15-Sep-01 21:02 EDT
• Conditions: transparency 6/10, seeing 6/10, LVM 6.7, temp 45° F, humidity 70%
• Processing: UMAX PowerLook 3000, Adobe Photoshop 6.0.1