Meade Instruments 1697 Computer Drive System For LXD 650 and LXD 750 Mounts - Part 2 - Manual (Page 7)

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The following types are distinguished in the CNGC.
TYPE LEGEND DESCRIPTION
0 None Unverified Southern Object
1 OPEN Open Cluster
2 GLOB Globular Cluster
3 DNEB Diffuse Nebula
4 PNEB Planetary Nebula (or SN Remnant)
5 GAL Galaxy
6 OPEN + DNEB Open Cluster + Diffuse Nebula
7 None Non-Existent Object
8 STAR Star
9 MULTI+STAR Multiple Star
A MULTI+GAL Multiple Galaxy (Usually Interacting)
B DNEB Dark Nebula in front of Diffuse Nebula
C GAL+OPEN Open Cluster in External Galaxy
D GAL+GLOB Globular Cluster in External Galaxy
E GAL+DNEB Diffuse Nebula in External Galaxy
F GAL+OPEN+DNEB Open Cluster + Diffuse Nebula in Galaxy
S Object is also listed in the Sky Catalogue 2000
T Object is also listed in the Tirion Sky Atlas 2000