Processed to accentuate star colors of this old cluster. Also, a comparison is made with a
famous close-up Hubble image of the core of this GC (FOV: 2.6´ x 1.4´).
For a high resolution version, click
here
For a very hires version that includes a registered insert of the Hubble image, click
here (Warning: 17MP file)
For an animation comparing both close-up cropped views, click
here
IMAGING DATA
Optical train: AP130 EDF GT + AP flattener
Mount: Losmandy G11
Guiding: SMC Takumar 67 f/4 200mm guidescope + QHY5L-II mono + PHD
Camera: Canon 6D (Baader modded and cooled, sensor @-5°C)
Frames: 22 lights 3 min. ea. @iso800, calibrated with 200 bias, no darks and 30 flats.
Processing: PI 1.8 + Canon DPP
Date: 2014-05-31
Place: San Antonio de Areco, Buenos Aires, Argentina
Seeing & transparency: very good/good (humid, lots of dew)
For detailed information on these objects, click
here 
