Astro-Drawings 2001

by Gerhard Niklasch

Our Galaxy: Open Clusters

M21, Open Cluster in Sagittarius

M21

Small open cluster just north of the Trifid nebula (M20).

Drawn 2001 Aug 13, c.23:00 MEST (21:00 UT), JD2452135.375

Instrument: 8" f/5 Newton, Paracorr to f/5.75, SWA 24.5mm (magnification c.47×) and SWA 13.8mm (magnification c.83.3×)


G. Niklasch / Wed, 15 Aug 2001 00:17:55 MEST