C/2025 R2 SWAN on September 16 2025

2025

Sep 21

Written By Charles Lillo

Image Title: C/2025 R2 SWAN on September 16 2025

Copyright: Alessandro Carrozzi

Date image was taken: September 16, 2025

Location: El Sauce Observatory, Chile

Data Acquisition Method: Remote Observatory (Commercial)

Description and Details: This is a long-period comet discovered by the SWAN instrument on board the SOHO spacecraft. These days it lies close to the Sun and is visible shortly after sunset, especially from the southern hemisphere. With a magnitude around 6, it can be observed with binoculars or a small telescope, but photography reveals its finest details: a vivid green coma and a long bluish ion tail, sculpted by the solar wind and interplanetary magnetic fields.

Technical details
Telescope: ASA-N 250mm f/3.9
Mount: Paramount MyT
Camera: ZWO ASI 6200MM (binning 2x2)
Filters: Chroma LRGB
Exposure: 10 min L, 6 min RGB

Name: Alessandro Carrozzi

Website or Facebook Profile: https://www.flickr.com/photos/151655471@N07/

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