Messier Catalog » M21 — NGC 6531 Webb's Cross

Open Cluster in Sagittarius

This is a specially framed capture to grab two Messier objects, one of which is a cluster, reflection nebula, emission nebula, and dark nebula all at the same time.
M20 and M21: Trifid Nebula and Webb's Cross

This is a specially framed capture to grab two Messier objects, one of which is a cluster, reflection nebula, emission nebula, and dark nebula all at the same time.

 
RA

18h 4.6m

Dec

-22°30

Magnitude

6.5 ⚪⚪⚪⚪⚪⚪⚫⚫⚫⚫

Size

13

Distance

4,250 light years

Season

☀ Summer

Difficulty

🟡 Moderate

 
M22: NGC 6656 »