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About this observation
Kevin G.
Time of observation
30/08/2016 - 20:08
Observing location
Celestron 8SE
Atik 460EX mono
Skywatcher AZ-EQ6-GT
OAG with AVS MkIV video cam
ASA 0.77 reducer corrector
Lum (IDAS LPS-D1) 5 x 300s; Blue 4 x 300s; Red 5 x 300s: all bin 1x1 at -12C
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Globular clusters present different challenges than nebulae. The core mustn't be too burnt out, while there should be a halo of fainter stars. I have compromised here... In addition, imaging over multiple nights (as here) is difficult; its hard to plate solve and reacquire the precise target coordinates from the previous session (maybe I'm missing a trick?). The star colours are probably not quite right here too... Still working on a good calibration method.

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