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Abell 1689 in Virgo

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About this observation
Observer
Tim Haymes
Time of observation
17/03/2020 - 02:47
Object
Abell 1689
Observing location
Robotic/Chile
Equipment
Planewave CDK24 at F6.5
TelescopeLive CHI-1
FLI PL 9000 CCD
Exposure
3 x 10min in Lum Filter
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A very massive cluster at 2.2 billion L yrs, well known for gravitational arcs seen  in images by Hubble ST - though not detected in these frames.  Field of view 31x31min arc.

The images received are dark and flat corrected with astrometric calibration.  Deep Sky Stacker was used to combine them, with a histogram stretch in AstroArt 5.

I was interested to see how deep i could go with a 60cm in 10min,  The brighter members of the cluster are roughly 17th mag without checking catalogs.

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