Contains: IC 4628, NGC 6242, NGC 6231
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IC 4628 and The Dark Tower in Ha

Technical card

Resolution: 3034x4285

Dates: June 10, 2017

Frames: 24x1800"

Integration: 12.0 hours

Avg. Moon age: 15.61 days

Avg. Moon phase: 99.19% job: 1610687

RA center: 252.834 degrees

DEC center: -40.784 degrees

Pixel scale: 3.281 arcsec/pixel

Orientation: 65.267 degrees

Field radius: 2.393 degrees

Locations: Burwood, Melbourne, Victoria, Australia


Strange bedfellows indeed.
This pair of objects are linked by clouds of Ha, but appear as wildly differing shapes.
Two panel mosaic with the bottom data captured almost exactly a year ago and the top captured last night under (and almost next to) a full moon resulting in another trip to gradient city.
Average seeing & some thin cloud meant the two data sets are a challenge to process as one.
I plan to eventually add RGB to this but not until under a dark sky again!
Tempted to add another panel or two to the right to include the infamous WOLF'S HEAD nebula.
Approx 6 hrs per panel, 30min subs.
Captured from suburban Melbourne.




Sky plot

Sky plot


IC 4628 and The Dark Tower in Ha,