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2014 Edition Updates

Updates for the 2014 Observer's Handbook

 

On p. 8, under Editorial Team, Michael Gatto's name should be as it appears here.

On p. 38, "Tiangong-1" should be spelled as it appears here.

On p. 99, the Jupiter satellites diagram in the right column is incorrect. Use the document provided below.

On p. 128, the magnitude for Arcturus is incorrectly given. It should be magnitude -0.05 (as shown on p. 281).

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Welcome

Founded in 1868, The Royal Astronomical Society of Canada is Canada's leading astronomy organization bringing together over 4,800 enthusiastic amateur astronomers, educators, and professionals.

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2026 Edition Updates

To report other corrections or to make suggestions for improvement, please send an email message to https://www.rasc.ca/contact/Handbook_Editor.

The following corrections have been noted to the 2026 edition:

On p. 237, in the Ceres paragraph, ignore the portion in parentheses in lines 6 and 7. Ceres does not reach opposition in 2026.

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JRASC October 2025

Inside this issue:

  • Record of the Crab Nebula Supernova
  • Herbig-Haro 39 Redux

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The Stories of Sudbury's Observatories ca. 1966-2025

THE STORIES OF SUDBURY'S OBSERVATORIES ca. 1966–2025
by STEVE DODSON

Sudbury has had active astronomical observatories for the past six decades. They represent both amateur and professional effort, and more than once the cooperation of astronomers across the vocational/avocational divide.
 
See also: RASC Sudbury Astronomy Club: Solar Observatory Project 1980-1989.

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JRASC June 2025

Inside this issue:

  • Wilkinson Memorial Observatory Redux
  • The Role of Citizen Science in Modern Astronomy

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JRASC April 2025

Inside this issue:

  • William Blair Bruce: An Artist’s Arctic Eclipse
  • In Hubble’s Nebula (NGC 2261) a jet-like structure to the south has disappeared

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Light Trespass

Dealing with Light Trespass

By Chetna Misra

Light trespass—the unwelcome spill of artificial light into spaces where it’s neither needed nor desired—has become a growing concern for those who cherish the nocturnal environment. As a symptom of light pollution, light trespass not only diminishes the beauty of dark skies but also disrupts ecosystems, affects human well-being, and highlights the consequences of poorly designed lighting systems.

Understanding Light Trespass

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JRASC 2025 February

Inside this issue:

  • NGC 6888 Emission Nebula associated with the Wolf-Rayet star HD 92163 (WR 136)
  • Matching Galactic Rotation Curves without Dark Matter or MOND
  • Accuracy of the “Shadow Stick” Method for Determining North
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Sudbury Club Origins

RASC Sudbury Astronomy Club - Origins and Early Years

Including, but not limited to, events from 1981-1987

by Steve Dodson, founding member

 

See also: RASC Sudbury Astronomy Club: Solar Observatory Project 1980-1989.

and: The Stories of Sudbury's Observatories ca. 1966-2025.

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