Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
October 2020
To view the complete report: Click on the following link…
Archive for the ‘Work File Only – Observer’s Challenge Reports’ category
NGC 7332/7339 Galaxy Pair in Pegasus: October 2020 Observer’s Challenge Report #141
October 15, 2020The Veil Nebula In Cygnus – September 2020 Observer’s Challenge Report #140
September 13, 2020
MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
September 2020
Report #140
The Veil Nebula has long been modeled as the remnant of a supernova explosion that occurred within an interstellar cavity created by the progenitor star. However, a recent study by Fesen, Weil, and Cisneros (2018MNRAS.481.1786F ) using multi-wavelength emission maps indicates that the large-scale structure of the Veil Nebula is due to interaction of the remnant with local interstellar clouds. Employing Gaia DR2 data, the team determined an distance of 735±25 pc.
This beautiful nebula bears several NGC designations. Its western arc, NGC 6960, runs through the naked-eye star 52 Cygni and is commonly called the Witch’s Broom. The tantalizingly intricate western arc is called NGC 6992 in the north, while the tattered southern reaches comprise NGC 6995. The brightest part of Pickering’s Triangular Wisp, which claims no NGC number, lies between the northern tips of the two great arcs. The discoverers of NGC 6974 (Lord Rosse) and NGC 6979 (William Herschel) gave these pieces positions that don’t correspond to anything obvious, but the names have been popularly tagged onto the northern and southern parts of the nebulosity just east of Pickering’s Triangular Wisp. As good a guess as any.
Messier 20: Bright Nebula and Cluster in Sagittarius – August 2020 Observer’s Challenge #139
August 15, 2020
MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
August 2020
Report #139
Sharing Observations and Bringing Amateur Astronomers Together
Messier 20, Nebula and Cluster in Sagittarius
Complete Observer’s Challenge Report:
August 2020 OBSERVERS CHALLENGE _M20
Messier 8: Nebula and Cluster in Sagittarius – July 2020 Observer’s Challenge Report #138
June 11, 2020
MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
July 2020
Report #138
Messier 8, Nebula and Cluster in Sagittarius
Complete Observer’s Challenge Report
July 2020 OBSERVERS CHALLENGE _M8
NGC 5689 and Optional Galaxy NGC 5676 In Bootes – June 2020 Observer’s Challenge Report #137
May 20, 2020MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
June 2020
Report #137
Galaxy NGC 5689 in Boötes
Complete Report
M85 and NGC 4394: Galaxies in Coma Berenices: Observer’s Challenge Report for May 2020: #136
April 22, 2020MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
May 2020
Report #136
M85 and NGC 4394: Galaxies in Coma Berenices
May 2020 OBSERVERS CHALLENGE _M85 and NGC 4394
NGC 3877 – Galaxy In Ursa Major: April 2020 Observer’s Challenge Report #135
February 28, 2020MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
April 2020
Report #135
NGC 3877 Galaxy in Ursa Major
April Observer’s Challenge Report:
April 2020 OBSERVERS CHALLENGE _ NGC 3877
NGC 2859 – Galaxy in Leo Minor: March 2020 Observer’s Challenge Report
February 27, 2020MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
March 2020
Report #134
NGC 2859 Galaxy in Leo Minor
Complete Observer’s Challenge Report Link as following:
NGC 1931 – Bright Nebula and Cluster in Auriga: February 2020 Observer’s Challenge Report
January 23, 2020MONTHLY OBSERVER’S CHALLENGE
Compiled by:
Roger Ivester, North Carolina
&
Sue French, New York
February 2020
Report #133
NGC 1931 Bright Nebula and Cluster in Auriga
Complete Report:
February 2020 OBSERVERS CHALLENGE _ NGC 1931
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