Messier 22 (NGC 6656)

The last data set from the globular cluster Messier 22 in the constellation Sagittarius I got from one of my favorite providers Telescope Live with telescopes in e.g. Chile, Australia and Spain.

Data calibration and registration and the final processing was done with PixInsight. The result was as follows:

The images were taken with the following equipment:

• Location: El Sauce Observatory, Chile
• Telescope: Planwave CDK 24
• Focal length [mm]: 3962
• Focal ratio: 6.5
• Mount: Mathis MI-1000/1250
• Camera: QHY 600M Pro
• Filter: L:R:G:B
• Exposure time [min]: 120:120:120:125
• Resolution: 0.39″/px (bin2)

During a holiday in Banon, France I imaged M22 and the globular cluster Messier 28 for the first time.

After calibrating and aligning the data in DeepSkyStacker, the final touches were crafted in PixInsight — resulting in the image you see below:

The images were taken with the following equipment:

• Date: 2011
• Location: Banon France
• Telescope, Lens: Canon 300mm lens
• Focal length [mm]: 300
• Focal ratio: 4
• Mount: Vixen GP
• Camera: Canon 300 Da
• Filter: OSC
• Exposure time [min]: 180
• Resolution: 5.22″/px