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Perspectives

Perspectives Jeffrey S. Ross AJNR Am J Neuroradiol 2023, 44 (5) 497 doi: https://doi.org/10.3174/ajnr.P0134 http://www.ajnr.org/content/44/5/497 This information is current as of June 3, 2023. PERSPECTIVES The Whirlpool Galaxy (NGC 5194) (aka Messier 51) is a spiral galaxy that is interacting with its smaller companion (NGC 5195). While the central globular structure is observable with small telescopes and binoculars, there is also an extensive nebula associated with these galaxies that is only observable with CCD images, as in this case. Discovered in 1773, M51 is located 31 million light-years from Earth in the constellation Canes Venatici. This image was acquired as a series of 34 5-minute exposures (2.8 hours) using red, green, and blue filters. The telescope was a Planewave 20” corrected Dall-Kirkham Astrograph, f/4.5 on a Planewave Ascension 200HR mount situated in New Mexico. The camera was a FLI ProLine PL11002M CCD, with Astrodon filters. The images were processed using PixInsight, Photoshop, and Topaz Labs Adjust AI and DeNoise AI. Jeffrey S. Ross, Mayo Clinic, Phoenix, Arizona AJNR Am J Neuroradiol 44:497 May 2023 www.ajnr.org 497 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Neuroradiology American Journal of Neuroradiology

Perspectives

Ross, Jeffrey S.
American Journal of Neuroradiology , Volume 44 (5): 1 – May 1, 2023
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Publisher
American Journal of Neuroradiology
Copyright
© 2023 by American Journal of Neuroradiology
ISSN
0195-6108
eISSN
1936-959X
DOI
10.3174/ajnr.p0134
Publisher site
See Article on Publisher Site

Abstract

Jeffrey S. Ross AJNR Am J Neuroradiol 2023, 44 (5) 497 doi: https://doi.org/10.3174/ajnr.P0134 http://www.ajnr.org/content/44/5/497 This information is current as of June 3, 2023. PERSPECTIVES The Whirlpool Galaxy (NGC 5194) (aka Messier 51) is a spiral galaxy that is interacting with its smaller companion (NGC 5195). While the central globular structure is observable with small telescopes and binoculars, there is also an extensive nebula associated with these galaxies that is only observable with CCD images, as in this case. Discovered in 1773, M51 is located 31 million light-years from Earth in the constellation Canes Venatici. This image was acquired as a series of 34 5-minute exposures (2.8 hours) using red, green, and blue filters. The telescope was a Planewave 20” corrected Dall-Kirkham Astrograph, f/4.5 on a Planewave Ascension 200HR mount situated in New Mexico. The camera was a FLI ProLine PL11002M CCD, with Astrodon filters. The images were processed using PixInsight, Photoshop, and Topaz Labs Adjust AI and DeNoise AI. Jeffrey S. Ross, Mayo Clinic, Phoenix, Arizona AJNR Am J Neuroradiol 44:497 May 2023 www.ajnr.org 497

Journal

American Journal of Neuroradiology – American Journal of Neuroradiology

Published: May 1, 2023

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