CG4: When Aliens Attack--Better call Fry!OTA: CDK17
Camera: Morovian 61000
Observatory: Deep Sky West, Chile
Exposures:
R: 27 x 300 sec
G: 29 x 300
B: 28 x 300
H: 25 x 1800 sec
Total Exposure time used: 19.5 hours
Processing used PixInsight, Topaz Studio2, 3DLut Creator, (and my scripts…AC_Restar and Nb_Assistant). Considerable luminance was captured but added noting to the image detail, but adversely affected the image color intensity, so it was discarded.
Set against the foreground nebula CG4, the galaxy PGC 21338 appears to be the target of a giant alien wormlike creature (A dreaded Red-Form Gaboid from Tremors?). I wonder if the beings in PGC 21338 know what looms? (The title references
https://en.wikipedia.org/wiki/When_Aliens_Attack with a side reference to Better Call Saul.)
Seriously, for a moment, I mapped the Ha into the RGB and estimated an amount of Hbeta (blue) to include. A good approximation for hydrogen clouds is the Hbeta emission is about 34% of the Ha emission intensity.
Alex Woronow
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