Sky & Telescope - June 2020 - 14

PINWHEEL PERFECTION

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by Alan Whitman

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A Galaxy-Hop
Around M101

BRIMMING WITH H II REGIONS
The author tackled the H II regions
in the spiral arms of M101, and on
his first visit identified three knots.
Two subsequent tours of the outer
arms of the galaxy revealed a
further seven knots.

Take a telescopic tour of the Pinwheel Galaxy and its neighbors.

14

JUNE 2 02 0 * SK Y & TELESCOPE

of my favorite articles on a stunning spiral galaxy in the far
eastern reaches of Ursa Major: M101. Join me as we acquaint
ourselves with this magnificent object and its surroundings.

Diving into M101's Spiral Arms
The June 1993 issue of Sky & Telescope featured the article "A
Visual Tour of M101" by amateur astronomer Roger N. Clark,
who used to observe at an excellent site in the Colorado
Rockies. M101 is a spiral galaxy that displays a mixture of

POSS-II / STSCI / CA LTECH /
PA LO MAR OBSERVATORY

I

tear out many of the observing articles in Sky & Telescope
to use as guides whenever a superb night might present
itself, and I add them to my ever-thickening observing
folder. But not every month offers a superb night at my latitude of 49° north, even though I live in the semiarid Okanagan Valley of southern British Columbia, on the drier and
clearer eastern side of the Cascade Mountains. The June section of my observing folder contains several articles that I dip
into often. This June will be no exception. I'll turn to some



Sky & Telescope - June 2020

Table of Contents for the Digital Edition of Sky & Telescope - June 2020

Contents
Sky & Telescope - June 2020 - Cover1
Sky & Telescope - June 2020 - Cover2
Sky & Telescope - June 2020 - 1
Sky & Telescope - June 2020 - Contents
Sky & Telescope - June 2020 - 3
Sky & Telescope - June 2020 - 4
Sky & Telescope - June 2020 - 5
Sky & Telescope - June 2020 - 6
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Sky & Telescope - June 2020 - Cover3
Sky & Telescope - June 2020 - Cover4
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