NGC 6231, IC 4628 (Sco)

NGC 6231, IC 4628 (Sco)

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Date/Site: March 21., 2015, Astrofarm at the Hacienda los Andes, Chile
Exposure/
Filter:
Canon: 18 x 300 seconds
QSI Hα: 6 x 300 seconds
QSI OIII: 10 x 300 seconds (-20°C)
Camera: DoubleShooter on AP Mach1
Guiding: Lodestar attached to a 61mm-finder, PHD,
focusing: Robofocus and FocusMax,
image acquisition: Nebulosity 3.2, conducted by Horia
calibration and processing: PixInsight 1.8

The "Little Scorpion", lying in the middle of the constellation Scorpius.
Other as the Hα-frames the OIII-shots added no new structures that were not already seen in the Canon-frames but they increased the already good signal to noise-ratio.

© Friedhelm Hübner, last revision:  20.08.2022