1. NGC 6791: An Old, Large Open Cluster
... Astronomy Picture of the Day . NGC 6791: An Old, Large Open Cluster . << Yesterday . 12.01.2000 . Tomorrow >> . ... et al., 2.1-m Telescope , KPNO , NOAO , NSF Explanation: NGC 6791 is one of the oldest and largest open clusters of stars known ...
2. APOD: 2000 January 12 - NGC 6791: An Old, Large Open Cluster
... NGC 6791: An Old, Large Open Cluster . Credit: Barbara J. Mochejska ( CAMK ) et al., 2.1-m Telescope , KPNO , NOAO , NSF . ... Explanation: NGC 6791 is one of the oldest and largest open clusters of stars known. But how did it get so dirty? ...
5. http://www.stsci.edu/hst/wfc3/documents/ISRs/WFC3-2015-03.pdf
... A few notes about the programs follow. During Cycle 17, only the rich open cluster NGC 6791 was observed. ... Jun/Jul 2012 Filters F502N, F606W F502N F502N, F606W F502N, F606W Target NGC 6791 NGC 104 NGC 6791, NGC 104 NGC 6791, NGC 104 4 ...
6. http://www.wro.org/neumann/RNGC_List_by_Constellation_RA-Lyr.pdf
... NGC 6700 NGC 6702 NGC 6703 IC 1294 NGC 6710 NGC 6713 IC 1296 NGC 6720 NGC 6731 NGC 6740 NGC 6743 NGC 6745 NGC 6766 NGC 6765 NGC 6767 NGC 6779 NGC 6791 NGC 6792 Total: 39 M Her Object Type Glxy S Glxy C Glxy Scd: Mag Alias/Notes 14.4 15.5 14.2 14.3 13.5 15 ...