Messier 3 (NGC 5272) from my own backyard and observatory

The globular cluster M3 is located in the constellation Canes Venatici.

Over the years, I have photographed this object at three different times from my own backyard and observatory, most recently in 2019 with a Luminance filter. I combined these data with my RGB data from 2012. The data calibration and registration and the final processing was done with PixInsight. The result was as follows:

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The images were taken with the following equipment:

• Date: 2019
• Location: Krefeld, Germany
• Telescope: 10″ Newton ohne Namen
• Focal length [mm]: 1000
• Focal ratio: 3.9
• Mount: Skywatcher EQ8
• Camera: Moravian 16200FW
• Filter: L
• Exposure time [min]: 140
• Resolution: 0,967″/px

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In 2012 I took the RGB data of M3 from my own backyard. The data calibration and registration was done with DeepSkyStacker and the final processing was done with PixInsight. The result was as follows:

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The images were taken with the following equipment:

• Date: 2012
• Location: Krefeld, Germany
• Telescope: TS 10″ Newton
• Focal length [mm]: 1140
• Focal ratio: 4.5
• Mount: Skywatcher NEQ6
• Camera: Moravian 8300FW
• Filter: R:G:B
• Exposure time [min]: 10:10:10
• Resolution: 1.94″/px

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The first succesful images of this object I took in 2010 from my own backyard. The data calibration and registration was done with DeepSkyStacker and the final processing was done with PixInsight. The result was as follows:

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The images were taken with the following equipment:

• Date: 2010
• Location: Krefeld, Germany
• Telescope: 8″ GSO Newton
• Focal length [mm]: 800
• Focal ratio: 4
• Mount: Skywatcher NEQ6
• Camera: Canon 300Da
• Filter: OSC
• Exposure time [min]: 180
• Resolution: 1.88″/px

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