https://sciencedowneast.com/zenphoto Tue, 14 Apr 2026 15:45:59 -0300 Tue, 14 Apr 2026 15:45:59 -0300 http://blogs.law.harvard.edu/tech/rss Zenphoto RSS Generator https://sciencedowneast.com/zenphoto/index.php?album=Nebulae/M57-Ring-Nebula&image=M57_RGGB_47x300_masterLight-BINNING_LR.jpg The Ring Nebulae (NGC 6960) is a planetary nebula in the northern constellation of Lyra, formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a star in the last stages of its evolution before becoming a white dwarf. This image taken with the Triad Ultra Quad Narrow-Band filter, which permitted shooting from with light-polluted suburbia.
Processed in PixInsight and Lightroom.

Exposure	47@300 sec (3.9 hours)
ISO	800
Camera	Nikon Z7 [8856 x 5504]
Optics	Skywatcher Esprit 120mm Refractor, 840 mm focal length
Filter	Radian Triad Ultra Quad-Band Narrowband Filter
Guiding	Phd2 using a ZWO 224MC on an Orion 60x240mm Guide scope
Controller	Images taken using Kstars on an Odroid-N2 (Raspberry Pi clone)
Location	Lower Sackville, Nova Scotia.
Date	2020-08-28
PixInsight Processing	WeightedBatchPreprocessing Script

Date: March 26, 2025 ]]> https://sciencedowneast.com/zenphoto/index.php?album=Nebulae/M57-Ring-Nebula&image=M57_RGGB_47x300_masterLight-BINNING_LR.jpg Sat, 29 Aug 2020 11:17:33 -0300