IC 4628 (Prawn Nebula)

This is an object I imaged twice over the years, both times during a stay at the Tivoli astrofarm in Namibia.

IC 4628, also known as the Prawn Nebula, is an emission nebula located in the constellation Scorpius.

The last time I imaged this open cluster and nebula in 2008. Data calibration and registration was done with DeepSkystacker, the final processing was done with PixInsight. The result was as follows:

Besides the Prawn nebula you can find the open cluster NGC 6242 top left.

The images were taken with the following equipment:

• Date 2006
• Location: Tivoli, Namibia
• Telescope: Pentax 75
• Focal length [mm]: 500
• Focal ratio: 6.7
• Mount: Vixen Atlux
• Camera: Canon 300 Da
• Filter: OSC
• Exposure time [min]: 64
• Resolution: 3.04″/px

The first time I imaged this open cluster and nebula in 2005. Data calibration and registration was done with DeepSkystacker, the final processing was done with PixInsight. The result was as follows:

The images were taken with the following equipment:

• Date 2005
• Location: Hakos, Namibia
• Telescope: Tamron 28-300 mm
• Focal length [mm]: 300
• Focal ratio: 6.3
• Mount: Liebscher
• Camera: Canon 300 Da
• Filter: OSC
• Exposure time [min]: 24
• Resolution: 5.4″/px