https://www.sciencedowneast.com/zenphoto Tue, 28 Jul 2026 19:35:48 -0300 Tue, 28 Jul 2026 19:35:48 -0300 http://blogs.law.harvard.edu/tech/rss Zenphoto RSS Generator https://www.sciencedowneast.com/zenphoto/index.php?album=Clusters/M003&image=M+13-S30.jpg Click on the image to view it at full resolution, then click again for actual size.

Messier 3 (NGC 5272) is a large, bright globular cluster in the constellation Canes Venatici, located approximately 33,900 light-years from Earth. It is among the largest and most populous globular clusters known, containing roughly half a million stars bound together by gravity, and is especially notable for hosting one of the largest known populations of variable stars, particularly RR Lyrae-type pulsators. Like most globulars, M3 is an ancient object, with stars dating back many billions of years to the early history of the Milky Way's halo. For imagers, it is a striking target for resolving a dense, sparkling core of individual stars against a smooth, symmetric glow, and benefits from good seeing and moderate focal length to render the tightly packed core without excessive star bloat.

[Source: Wikipedia, en.wikipedia.org/wiki/Messier_3]

Moon Phase	First Quarter
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Date	2026-05-23
PixInsight Processing	Fast Integration Drizzle Integration Dynamic Crop BlurXTerminator (AI deconvolution) (x2) Background Neutralization Dynamic Background Extraction Spectrophotometric Color Calibration NoiseXTerminator (AI denoise) Multiscale Adaptive Stretch Multiscale Median Transform

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Clusters/M003&image=M+13-S30.jpg Sat, 23 May 2026 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Clusters/M003&image=M+13-S30+copy.jpg Click on the image to view it at full resolution, then click again for actual size.

Messier 3 (NGC 5272) is a large, bright globular cluster in the constellation Canes Venatici, located approximately 33,900 light-years from Earth. It is among the largest and most populous globular clusters known, containing roughly half a million stars bound together by gravity, and is especially notable for hosting one of the largest known populations of variable stars, particularly RR Lyrae-type pulsators. Like most globulars, M3 is an ancient object, with stars dating back many billions of years to the early history of the Milky Way's halo. For imagers, it is a striking target for resolving a dense, sparkling core of individual stars against a smooth, symmetric glow, and benefits from good seeing and moderate focal length to render the tightly packed core without excessive star bloat.

[Source: Wikipedia, en.wikipedia.org/wiki/Messier_3]

Moon Phase	First Quarter
Camera	Seestar S30
Optics	150 mm focal length, f/5, 30 mm aperture (APO triplet)
Date	2026-05-23
PixInsight Processing	Fast Integration Drizzle Integration Dynamic Crop BlurXTerminator (AI deconvolution) (x2) Background Neutralization Dynamic Background Extraction Spectrophotometric Color Calibration NoiseXTerminator (AI denoise) Multiscale Adaptive Stretch Multiscale Median Transform

Date: July 28, 2026 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Clusters/M003&image=M+13-S30+copy.jpg Sat, 23 May 2026 00:00:00 -0300 https://www.sciencedowneast.com/zenphoto/index.php?album=Clusters/M003&image=M3_2020-05-23.jpg Messier 3 (NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici. It was discovered on May 3, 1764,[9] and was the first Messier object to be discovered by Charles Messier himself.
2.2 hours integration

Exposure	26*300 sec
ISO	800
Camera	Nikon Z7 [8856 x 5504]
Optics	Skywatcher Esprit 120mm Refractor
Filter	Radian Triad Ultra Quad-Band Narrowband Filter
Location	Lower Sackville, Nova Scotia.
Date	2020-05-23
Processing	Processed in PixInsight and Lightroom.

Date: March 26, 2025 ]]> https://www.sciencedowneast.com/zenphoto/index.php?album=Clusters/M003&image=M3_2020-05-23.jpg Sat, 04 Jul 2020 12:54:53 -0300