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Description
Another exponent play. Detail of z-plane (that's it is a part of a Julia set for z -> z^2i + c, c = 1.83125 - i. The black hole is due to the low max iteration (200). It will disappear if the max iteration being being increased sufficiently. Below the parameter file. Play and have fun

BlackHole2 {
fractal:
title="BlackHole2" width=640 height=480 layers=1
credits="Ingvar Kullberg;8/24/2007"
layer:
method=multipass caption="Background" opacity=100
mapping:
center=2.14375/0.05625 magn=1
formula:
maxiter=250 filename="Standard.ufm" entry="Julia" p_seed=1.83125/-1
p_power=0/2 p_bailout=2048
inside:
transfer=none
outside:
transfer=linear filename="Standard.ucl" entry="Smooth" p_power=2/0
p_bailout=128.0
gradient:
smooth=yes rotation=1 index=0 color=6555392 index=64 color=13331232
index=168 color=16777197 index=257 color=43775 index=343 color=512
opacity:
smooth=no index=0 opacity=255
}

Description
Another exponent play. Detail of z-plane (that's it is a part of a Julia set for z -> z^2i + c, c = 1.83125 - i. The black hole is due to the low max iteration (200). It will disappear if the max iteration being being increased sufficiently. Below the parameter file. Play and have fun

BlackHole2 {
fractal:
title="BlackHole2" width=640 height=480 layers=1
credits="Ingvar Kullberg;8/24/2007"
layer:
method=multipass caption="Background" opacity=100
mapping:
center=2.14375/0.05625 magn=1
formula:
maxiter=250 filename="Standard.ufm" entry="Julia" p_seed=1.83125/-1
p_power=0/2 p_bailout=2048
inside:
transfer=none
outside:
transfer=linear filename="Standard.ucl" entry="Smooth" p_power=2/0
p_bailout=128.0
gradient:
smooth=yes rotation=1 index=0 color=6555392 index=64 color=13331232
index=168 color=16777197 index=257 color=43775 index=343 color=512
opacity:
smooth=no index=0 opacity=255
}