DoDz 6 (Lund 404) Open Cluster in Hercules

Located at: RA 16 hours 45 minutes 24 seconds, Dec +38 degrees 20 minutes 44 seconds

Size: 17' (3.5') Magnitude: -- Class: IV 2 p (?)

North is up

West to the right


 8" f5 Newtonian reflector


  ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56


Lumicon Red filter, 240 minutes  (24 x 10 minute subs) 06/13/14/17/2010; seeing 2.6-3.9 FWHM per CCDStack


CCDStack 2.6.3800.24688, Photoshop 7.0


 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)


According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 3.5 arc minutes. Comments: "Center at third brt. star. Brt star is HD 151366 = SAO 65529." Flaring coming from NW (upper right) is from Eta Hercules (44 Her), a 3.5 (visual) magnitude star that is out of the field 45.5 minutes from DoDz 6