Trumpler 3 (Lund 101, Cr 36, Harvard 1) Open Cluster in Cassiopeia
Located at: RA 03 hours 12 minutes 00 seconds, Dec +63 degrees 11 minutes 00 seconds
Size: 23' (15'); Magnitude: 7.0; Class: III 2 m
North is up
West to the right
| Telescope: |
8" f5 Newtonian reflector |
| Camera: |
ST-8XME, self-guided, binned 1x1, temp -25c, camera control MaxIm DL 4.56 |
| Image: |
Lumicon Red filter, 580 minutes (58 x 10 minute subs), 11/22/24/2011; seeing 2.3-3.4 FWHM per CCDStack |
| Processing: |
CCDStack 2.53.4349.21251, Photoshop CS5.1 |
| Location: |
Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s) |
| Notes: |
According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 15 arc minutes |