http://seds.lpl.arizona.edu/messier/more/m008_bigdssm.html (Internet on a CD, 07/1998)taken from the Digital Sky Survey Messier collection of Bill Arnett
This image of the Digital Sky Survey shows the Lagoon Nebula M8 brightly below center,
the Trifid Nebula M20 slightly right of top center, and close above left the young open
cluster M21. It shows more stellar clouds, clusters, and dark and bright nebula on closer
investigation. The field is 3 degrees.
Hartmut Frommert (spider@seds.org)