Art Universe

Earth & Sky

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Technical information

Date & time2019 July 7th/8th
23:48 ~ 00:15 CAT
LocationTivoli Astro-Farm, Namibia
OpticsSamyang 24mm f1.4 ED AS UMC
CameraNikon D810A
MountSky-Watcher Star Adventurer
TripodManfrotto MT055XPRO3
Composition19 pane mosaic in stereographical projection:
3 rows of 6 panes spaced 60° apart azimuthally
and aimed at altitudes -20°, +20°, +60°
1 pane aimed at zenith
ExposureBottom row: 30 seconds per pane, ISO 1600, 0.5x tracking speed
Middle row: 1 minute per pane, ISO 800
Top row & zenith: 2 minutes per pane, ISO 400
24 mm, f/2
23 minutes total
Calibration40 bias frames
40 flat frames
ProcessingDeepSkyStacker: calibrate
Microsoft ICE: compose mosaic
Adobe Photoshop CC: ACR filter
Original resolution21600 x 14400 pixels

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