Abell 1377 Galaxy Cluster and neighborhood

11 images in luminance showing the galaxy cluster Abell 1377, each with 180 seconds of exposure, captured using a 0.61m f/6.5 Corrected Dall-Kirkham Astrograph at the Sierra Remote Observatory. Calibration, registration, and stacking were performed with IRIS. Before removing the background gradient, a star mask was applied to reduce the star brightness, allowing the galaxy behind to become more visible.

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