47 Tucanae (with NGC121 on the left)

IMAGING DATA
Optical train: AP130 EDF GT + AP flattner + IDAS/LPS filter
Mount: Meade LXD75
Guiding: B&L 80/800 SCT guidescope + SPC900NC + PHD
Camera: Canon 1000D (modded and Peltier cooled to 25°F)
Frames: 18 lights 1 min iso800, 21 of 1 min iso1600, 21 of 35 sec iso400, 21 of 25 sec iso400. Each series calibrated with between 12 and 20 darks, 20 flats and flat-darks.
Processing: DSS + Photoshop + Canon DPP
Date: 2010-10-19
Place: General Pacheco, Buenos Aires, Argentina
Seeing & transparency: mediocre

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  • Anthony Shostak on 2015-Mar-26 13:20:21 Anthony Shostak said

    The asymmetrical composition is effective, as is the contrast between the two clusters.