pfile
Pleiades 2013/2014
Pleiades 2013/2014
LRGB
processed in pixinsight 1.8 v1071
captured with equinox image
TMB92SS + TRF-2008 + STT-8300M + Astrodon G2E filters + Mach1 GTO
L : 34x300s = 2h50m (1/3/2014, 1/4/2014)
R : 10x300s = 50m (1/5/2014)
G : 17x300s = 1h25m (1/5/2014)
B : 8x300, 49x180 = 3h07m (11/4/2013)
total 8h12m
notes: obviously ran out of time on this one - the moon is back and anyway the clouds have returned. the L and B would support a much more aggressive stretch, but the other channels don't permit it.
foolishly did not center the LRG frames on the B acquired last year, so this is a crop. tried 300s lights first at B and found some bad reflections probably from the reducer. dropped to 180s. however, the framing for the LRG images did not show the same reflections, so likely i should re-shoot the blue with that framing. on the other hand this thing is brighter in B so perhaps i'm stuck. there's a blue blotch in this image that does not belong…
will revisit this later; i have some shorter exposures to blend in to recover the star colors and profiles, but only for 2 of the channels...
Pleiades 2013/2014
Pleiades 2013/2014
LRGB
processed in pixinsight 1.8 v1071
captured with equinox image
TMB92SS + TRF-2008 + STT-8300M + Astrodon G2E filters + Mach1 GTO
L : 34x300s = 2h50m (1/3/2014, 1/4/2014)
R : 10x300s = 50m (1/5/2014)
G : 17x300s = 1h25m (1/5/2014)
B : 8x300, 49x180 = 3h07m (11/4/2013)
total 8h12m
notes: obviously ran out of time on this one - the moon is back and anyway the clouds have returned. the L and B would support a much more aggressive stretch, but the other channels don't permit it.
foolishly did not center the LRG frames on the B acquired last year, so this is a crop. tried 300s lights first at B and found some bad reflections probably from the reducer. dropped to 180s. however, the framing for the LRG images did not show the same reflections, so likely i should re-shoot the blue with that framing. on the other hand this thing is brighter in B so perhaps i'm stuck. there's a blue blotch in this image that does not belong…
will revisit this later; i have some shorter exposures to blend in to recover the star colors and profiles, but only for 2 of the channels...