https://www.sciencedowneast.com/zenphoto Sat, 08 Aug 2026 05:29:55 -0300 Sat, 08 Aug 2026 05:29:55 -0300 http://blogs.law.harvard.edu/tech/rss Zenphoto RSS Generator https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025R3v1.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 R3 (PANSTARRS) is a long-period comet discovered on September 8, 2025 by Yudish Ramanjooloo using the Pan-STARRS2 1.8-meter telescope on Haleakalā, Hawaii, when it appeared as a faint, roughly 19th-20th magnitude object in Andromeda some 3.6 AU from the Sun. It reached perihelion on April 19, 2026. Preliminary orbital calculations suggest its path may be only barely bound, or even hyperbolic, meaning this could be its only pass through the inner solar system before it is flung back into interstellar space. Likely an ancient body dislodged from the outer solar system's Oort Cloud, it drew some media speculation as a possible “great comet,” though its actual peak brightness remained modest. As with most comets, imagers should expect a diffuse coma and faint ion/dust tails that shift night to night, best captured with tracked, stacked exposures.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_R3_(PanSTARRS); Space.com; British Astronomical Association]

Total image time was 15 minutes.

Moon Phase	New Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Filter	IRCUT
Binning	1x1
Date	2026-04-18
PixInsight Processing	Image Integration Drizzle Integration BlurXTerminator (AI deconvolution) Dynamic Crop Histogram Transformation Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025R3v1.jpg Sat, 18 Apr 2026 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025+R3+S30+v1.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 R3 (PANSTARRS) is a long-period comet discovered on September 8, 2025 by Yudish Ramanjooloo using the Pan-STARRS2 1.8-meter telescope on Haleakalā, Hawaii, when it appeared as a faint, roughly 19th-20th magnitude object in Andromeda some 3.6 AU from the Sun. It reached perihelion on April 19, 2026. Preliminary orbital calculations suggest its path may be only barely bound, or even hyperbolic, meaning this could be its only pass through the inner solar system before it is flung back into interstellar space. Likely an ancient body dislodged from the outer solar system's Oort Cloud, it drew some media speculation as a possible “great comet,” though its actual peak brightness remained modest. As with most comets, imagers should expect a diffuse coma and faint ion/dust tails that shift night to night, best captured with tracked, stacked exposures.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_R3_(PanSTARRS); Space.com; British Astronomical Association]

Moon Phase	New Moon
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Date	2026-04-18
PixInsight Processing	Image Integration Drizzle Integration Background Neutralization Automatic Background Extraction Dynamic Background Extraction Curves Transformation (x2)

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025+R3+S30+v1.jpg Sat, 18 Apr 2026 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025R3+S30Pro+v2.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 R3 (PANSTARRS) is a long-period comet discovered on September 8, 2025 by Yudish Ramanjooloo using the Pan-STARRS2 1.8-meter telescope on Haleakalā, Hawaii, when it appeared as a faint, roughly 19th-20th magnitude object in Andromeda some 3.6 AU from the Sun. It reached perihelion on April 19, 2026. Preliminary orbital calculations suggest its path may be only barely bound, or even hyperbolic, meaning this could be its only pass through the inner solar system before it is flung back into interstellar space. Likely an ancient body dislodged from the outer solar system's Oort Cloud, it drew some media speculation as a possible “great comet,” though its actual peak brightness remained modest. As with most comets, imagers should expect a diffuse coma and faint ion/dust tails that shift night to night, best captured with tracked, stacked exposures.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_R3_(PanSTARRS); Space.com; British Astronomical Association]

Moon Phase	New Moon
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Date	2026-04-18
PixInsight Processing	Image Integration Drizzle Integration Background Neutralization Automatic Background Extraction Dynamic Background Extraction Curves Transformation (x2)

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025R3+S30Pro+v2.jpg Sat, 18 Apr 2026 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025R3v2.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 R3 (PANSTARRS) is a long-period comet discovered on September 8, 2025 by Yudish Ramanjooloo using the Pan-STARRS2 1.8-meter telescope on Haleakalā, Hawaii, when it appeared as a faint, roughly 19th-20th magnitude object in Andromeda some 3.6 AU from the Sun. It reached perihelion on April 19, 2026. Preliminary orbital calculations suggest its path may be only barely bound, or even hyperbolic, meaning this could be its only pass through the inner solar system before it is flung back into interstellar space. Likely an ancient body dislodged from the outer solar system's Oort Cloud, it drew some media speculation as a possible “great comet,” though its actual peak brightness remained modest. As with most comets, imagers should expect a diffuse coma and faint ion/dust tails that shift night to night, best captured with tracked, stacked exposures.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_R3_(PanSTARRS); Space.com; British Astronomical Association]

Total image time was 15 minutes.

Moon Phase	New Moon
Camera	Seestar S30 Pro (4K Sony IMX585 sensor)
Optics	160 mm focal length, f/5.3, 30 mm aperture (APO quadruplet)
Filter	IRCUT
Binning	1x1
Date	2026-04-18
PixInsight Processing	Image Integration Drizzle Integration BlurXTerminator (AI deconvolution) Dynamic Crop Histogram Transformation Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-R3&image=C2025R3v2.jpg Sat, 18 Apr 2026 00:00:00 -0300