Messier 101 (M 101)

Introduction | Map | My Best Own Photos | My Own Observations | References || Appendix: My Own Photos

On this page I collect my observations of the spiral galaxy M 101 (Pinwheel Galaxy) in the constellation Ursa Major.

Introduction

The spiral galaxy M 101 (Pinwheel Galaxy) in the constellation Ursa Major is seen face-on, similar to M 99 and M 100, but much larger than both; quite impressive in the eVscope. In the Vespera, you can also see the dwarf spiral galaxy NGC 5474.

Size: 18' x 11' (Stoyan)
Distance: 25 million light years
Rating: ** (Stoyan)

Map

The spiral galaxy M 101 (Pinwheel Galaxy) in the constellation Ursa Major (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Best Own Photos

eVscope


M 101 - Jun 11, 2020	M 101 - Sep 8, 2020	M 101 - Sep 8, 2020

M 101 - Jun 11, 2020, photo on top processed	M 101 - Sep 8, 2020, photo on top processed	M 101 - Sep 8, 2020, photo on top processed

M 101 - Mar 6, 2021	M 101 - Mar 6, 2021	M 101 - Mar 6, 2021

M 101 - Mar 6, 2021, photo on top processed	M 101 - Mar 6, 2021, photo on top processed	M 101 - Mar 6, 2021, photo on top processed

M 101 - May 30, 2021	M 101 - May 30, 2021, photo left processed

eVscope 2 (3)


M 101 - Aug 22, 2022		M 101 - Aug 22, 2022, photo left processed

Vespera


M 101, 29.7.2022 - original (82 frames = 820 seconds)		M 101, 7.8.2022 - original (191 frames = 1910 seconds)

Spiralgalaxy NGC 5474 to the left

My Own Observations

Observations March to September 2020

March 15, 23, and 25, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed; best and great on March 25.
April 19, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed, somewhat fuzzy.
April 21, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed.
April 22, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (no overlay, rectangular format)
May 5, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.); nearly full moon.
June 11, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.)
June 12, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.)
July 3, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), sky too bright
July 9, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), partly poor conditions
August 8, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), poor conditions
August 19, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), poor conditions
September 8, 2020 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.)

Observations March to May 2021

March 6, 2021 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.)
May 30, 2021 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), new image size and processing.

Observations July to September 2021

July 18, 2021 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), new image size and processing, poor collimation despite new collimation
July 29, 2021 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), new image size and processing, poor collimation, exposed too shortly
August 20, 2021 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), new image size and processing, better new collimation, poor...
September 8, 2021 (Mühlhausen/Kraichgau: eVscope): M 101 photographed (n.o., r.f.), new image size and processing; exposed too shortly...

Observations April 2022

April 9, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 101 photographed (app version 1.5), faint...
April 10, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 101 photographed (app version 1.5), faint...
April 17, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 101 photographed (app version 1.5), faint...

Observations July/August 2022

July 29, 2022 (Mühlhausen/Kraichgau: Vespera): M 101 photographed
August 7, 2022 (Mühlhausen/Kraichgau: Vespera): M 101 photographed (longer exposed)
August 22, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 101 photographed

References

Messier Catalogue - Messier 101: messier.seds.org/m/m101.html

On this Site

Appendix: My Own Photos

eVscope


M 101 - Mar 15, 2020	M 101 - Mar 23, 2020	M 101 - Mar 25, 2020

M 101 - Mar 15, 2020, photo on top processed	M 101 - Mar 23, 2020, photo on top processed	M 101 - Mar 25, 2020, photo on top processed

M 101 - Apr 19, 2020, fuzzy, processed	M 101 - Apr 21, 2020	M 101 - Apr 21, 2020, photo left processed

M 101 - Apr 22, 2020	M 101 - May 5, 2020	M 101 - Jun 11, 2020

M 101 - Apr 22, 2020, photo on top processed	M 101 - May 5, 2020, photo on top processed	M 101 - Jun 11, 2020, photo on top processed

M 101 - Jun 12, 2020	M 101 - Jul 3, 2020, sky too bright	M 101 - Jul 9, 2020, poor conditions

M 101 - Jun 12, 2020, photo on top processed	M 101 - Jul 3, 2020, photo on top processed	M 101 - Jul 9, 2020, photo on top processed

M 101 - Jul 9, 2020	M 101 - Aug 8, 2020, poor conditions	M 101 - Aug 19, 2020

M 101 - Jul 9, 2020, photo on top processed	M 101 - Aug 8, 2020, photo on top processed	M 101 - Aug 19, 2020, photo on top processed

M 101 - Aug 19, 2020	M 101 - Sep 8, 2020	M 101 - Sep 8, 2020

M 101 - Aug 19, 2020, photo on top processed	M 101 - Sep 8, 2020, photo on top processed	M 101 - Sep 8, 2020, photo on top processed

M 101 - Mar 6, 2021	M 101 - Mar 6, 2021	M 101 - Mar 6, 2021

M 101 - Mar 6, 2021, photo on top processed	M 101 - Mar 6, 2021, photo on top processed	M 101 - Mar 6, 2021, photo on top processed

M 101 - May 30, 2021	M 101 - July 18, 2021	M 101 - July 29, 2021

M 101 - May 30, 2021, photo on top processed	M 101 - July 18, 2021, photo on top processed	M 101 - July 29, 2021, photo on top processed

M 101 - Aug 20, 2021	M 101 - Aug 20, 2021, photo left processed

M 101 - Sep 8, 2021	M 101 - Sep 8, 2021, photo left processed

eVscope 2


M 101 - Apr 9, 2022	M 101 - Apr 10, 2022	M 101 - Apr 17, 2022

M 101 - Apr 9, 2022, photo on top processed	M 101 - Apr 10, 2022, photo on top processed	M 101 - Apr 17, 2022, photo on top processed

eVscope 2 (3)


M 101 - Aug 22, 2022		M 101 - Aug 22, 2022, photo left processed

Vespera


M 101, 29.7.2022 - original (82 frames = 820 seconds)		M 101, 7.8.2022 - original (191 frames = 1910 seconds)

Spiralgalaxy NGC 5474 to the left