https://www.sciencedowneast.com/zenphoto Sat, 08 Aug 2026 05:27:06 -0300 Sat, 08 Aug 2026 05:27:06 -0300 http://blogs.law.harvard.edu/tech/rss Zenphoto RSS Generator https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-A6-Lemmon&image=Comet2025A6_Light_Clear_60_secs_Gain_100_-10_C_2025-10-07T05-41-44_031_c_1_d.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 A6 (Lemmon) is a long-period comet discovered on January 3, 2025 by David C. Fuls as part of the Mount Lemmon Survey at the University of Arizona's Steward Observatory, when it appeared as a faint asteroidal object roughly 4.5 AU from the Sun before follow-up observations revealed cometary activity. It brightened substantially as it approached the Sun, becoming visible to the naked eye around its closest approach to Earth on October 21, 2025. Its orbit suggests it won't return to the inner solar system for a very long time, if ever.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_A6_(Lemmon); BBC Sky at Night, skyatnightmagazine.com]

Moon Phase	Full Moon
Camera	ToupTek ATR2600C
Optics	Skywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet)
Filter	Clear
Binning	1x1
Date	2025-10-07
PixInsight Processing	Channel Combination (x2) Image Integration (x2) Image Calibration Debayer BlurXTerminator (AI deconvolution) GraXpert (gradient removal) NoiseXTerminator (AI denoise) Generalized Hyperbolic Stretch (x5) Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-A6-Lemmon&image=Comet2025A6_Light_Clear_60_secs_Gain_100_-10_C_2025-10-07T05-41-44_031_c_1_d.jpg Tue, 07 Oct 2025 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-A6-Lemmon&image=masterLight_BIN-1_8288x5520_EXPOSURE-60.70s_FILTER-NoFilter_RGB.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 A6 (Lemmon) is a long-period comet discovered on January 3, 2025 by David C. Fuls as part of the Mount Lemmon Survey at the University of Arizona's Steward Observatory, when it appeared as a faint asteroidal object roughly 4.5 AU from the Sun before follow-up observations revealed cometary activity. It brightened substantially as it approached the Sun, becoming visible to the naked eye around its closest approach to Earth on October 21, 2025. Its orbit suggests it won't return to the inner solar system for a very long time, if ever.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_A6_(Lemmon); BBC Sky at Night, skyatnightmagazine.com]

Total image time was 3 minutes.

Moon Phase	Full Moon
Camera	ToupTek ATR2600C
Optics	Skywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet)
Date	2025-10-07
PixInsight Processing	Image Integration (x2)

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-A6-Lemmon&image=masterLight_BIN-1_8288x5520_EXPOSURE-60.70s_FILTER-NoFilter_RGB.jpg Tue, 07 Oct 2025 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-A6-Lemmon&image=Comet2025A6_Light_Clear_60_secsx31.jpg Click on the image to view it at full resolution, then click again for actual size.

Comet C/2025 A6 (Lemmon) is a long-period comet discovered on January 3, 2025 by David C. Fuls as part of the Mount Lemmon Survey at the University of Arizona's Steward Observatory, when it appeared as a faint asteroidal object roughly 4.5 AU from the Sun before follow-up observations revealed cometary activity. It brightened substantially as it approached the Sun, becoming visible to the naked eye around its closest approach to Earth on October 21, 2025. Its orbit suggests it won't return to the inner solar system for a very long time, if ever.

[Source: Wikipedia, en.wikipedia.org/wiki/C/2025_A6_(Lemmon); BBC Sky at Night, skyatnightmagazine.com]

Moon Phase	Full Moon
Camera	ToupTek ATR2600C
Optics	Skywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet)
Filter	Clear
Binning	1x1
Date	2025-10-07
PixInsight Processing	Channel Combination (x2) Image Integration (x2) Image Calibration Debayer BlurXTerminator (AI deconvolution) GraXpert (gradient removal) NoiseXTerminator (AI denoise) Generalized Hyperbolic Stretch (x5) Curves Transformation

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Comets/Comet-C2025-A6-Lemmon&image=Comet2025A6_Light_Clear_60_secsx31.jpg Tue, 07 Oct 2025 00:00:00 -0300