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The Rosette Nebula

The Rosette Nebula is a vast emission nebula, whose shape vaguely resembles that of a rose. It lies within the constellation Monoceros (the Unicorn), approximately 5,000 light-years from Earth.

This image was captured during the testing of a new imaging setup, under the light-polluted skies of Casalgrande, in the Po Valley, and was obtained with only 85 minutes of total integration time.

 

Technical details:

Lens: Nikkor 400mm f/2.8

Mount: SkyWatcher NEQ6 Pro

Imaging/Guiding Camera: ZWO ASI 2600MC Duo

Filter: Optolong L-Extreme (dual band Ha/OIII 7nm)

Exposures: 17 x 300s at f/4

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Uploaded on April 6, 2025