Photo Display Photo ID 71 Click On Image to Open Full Size in a New Tab Title M4 Caption Globular Cluster M4, one of my favorite deep-sky objects. Contains some of the oldest known stars in the Milky Way. Object Name M4 Messier Desig M 4 NGC Desig NGC 6121 Other Desigs n/a Right Ascension 16Hr 23' 35.22" Declination -26° 31' 32.70" Magnitude 5.90 Scope Used BRT Galaxy C14 w/foc red Camera Used BRT FLI Microline E2V CCD47-10 Photo Notes 180s each RGB. Camera is poorly aligned and object is off-center. Object Type Globular Cluster Distance (ly) 7200.00 Constellation Scorpius Return to List