LRGB image
Target Information
- ALTERNATIVE DESIGNATION(S): ET Cluster, Caldwell 13
- TYPE: open star cluster
- CONSTELLATION: Cassiopeia
- DISTANCE: 7,922 light years
Imaging Information
- IMAGING DATE(S): November 2015
- L: 10 min subs x 6, Bin 1×1
- R: 5 min subs x 6, Bin 2×2
- G: 5 min subs x 6, Bin 2×2
- B: 5 min subs x 6, Bin 2×2
- TOTAL EXPOSURE TIME: 150 mins = 2.5 hrs
Equipment
- TELESCOPE: Takahashi TOA-130F
- MOUNT: Software Bisque Paramount ME
- CAMERA: SBIG STL-11000XM
- GUIDING: TC-237 (internal autoguide chip)
- FILTERS: Astrodon
- IMAGE ACQUISITION SOFTWARE: TheSkyX, CCDAP5
- PROCESSING SOFTWARE: PixInsight