Messier 109 (M 109)

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

On this page I collect my observations of the barred spiral galaxy M 109 (NGC 3992) in the constellation Ursa Major.

Introduction

The galaxy M 109 in the constellation Ursa Major is a barred spiral galaxy, the bar of which is easily recognized in the eVscope. M 109 is the brightest galaxy in the M 109 Group (also known as the NGC 3992 Group or Ursa Major cloud), a large group of galaxies in the constellation Ursa Major that may number over 50 (or 80).

M 109 (NGC 3992)
Size: 3' x 1.5' / 7.6' x 4.7' (Stoyan/Wikipedia)
Distance: 60/50 million light years (Stoyan)
Rating: * (Stoyan)

Map

The barred spiral galaxy M 109 in the constellation Ursa Major (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Best Own Photos

eVscope

M 109 - Mar 6, 2021		M 109 - Mar 6, 2021, photo left processed
M 109 - Mar 6, 2021		M 109 - Mar 6, 2021, photo left processed

Vespera Pro

M 109, Jun 4, 2024 - 2000p (20 frames = 200s, aborted)
M 109, Jul 8, 2024 - 1800p (180 frames = 1800s)		M 109, Jul 8, 2024 - 1800p (180 frames = 1800s), processed
M 109, Jul 8, 2024 - 1800p (90 frames = 900s)		M 109, Jul 8, 2024 - 1800p (90 frames = 900s), processed
M 109, Jul 8, 2024 - 1800p (90 frames = 900s), processed and denoised (DN)		M 109, Jul 8, 2024 - 1800p (180 frames = 1800s), processed and denoised (DN)

My Own Observations

Observations March to June 2020

• March 15 and 23, 2020 (Mühlhausen/Kraichgau: eVscope): M 109 photographed, better on March 23.
• April 21, 2020 (Mühlhausen/Kraichgau: eVscope): M 109 photographed.
• June 12, 2020 (Mühlhausen/Kraichgau: eVscope): M 109 photographed in the new rectangular format without overlay, faint

Observations September 2020

• September 8, 2020 (Mühlhausen/Kraichgau: eVscope): M 109 photographed (r.f., n.o.), faint

Observations March to June 2021

• March 6, 2021 (Mühlhausen/Kraichgau: eVscope): M 109 photographed (r.f., n.o.), exposed manually
• June 1, 2021 (Mühlhausen/Kraichgau: eVscope): M 109 photographed (n.o., r.f.), new image size and processing.

Observations June/July 2024

• June 4, 2024 (Mühlhausen/Kraichgau: Vespera): M 109 photographed, aborted after 3:20 min because of clouds
• July 8, 2024 (Mühlhausen/Kraichgau: Vespera Pro): M 109 photographed for two times (30 min and 15 min (later disturbed))

References

• Messier Catalogue - Messier 109: messier.seds.org/m/m109.html
• Messier 109 (Wikipedia): en.wikipedia.org/wiki/Messier_109
• M109 Group (Wikipedia): en.wikipedia.org/wiki/M109_Group

On this Site

• Unistellar eVscope Information
• Vaonis Vespera Pro - Information

Appendix: My Own Photos

eVscope

M 109 - Mar 15, 2020		M 109 - Mar 23, 2020		M 109 - Apr 21, 2020
M 109 - Mar 15, 2020, photo on top processed		M 109 - Mar 23, 2020, photo on top processed		M 109 - Apr 21, 2020, photo on top processed
M 109 - Jun 12, 2020		M 109 - Jun 12, 2020, photo left processed
M 109 - Sep 8, 2020		M 109 - Sep 8, 2020, photo left processed
M 109 - Mar 6, 2021		M 109 - Mar 6, 2021, photo left processed
M 109 - Mar 6, 2021		M 109 - Mar 6, 2021, photo left processed
M 109 - Jun 1, 2021		M 109 - Jun 1, 2021, photo left processed (Polarr)

Vespera Pro

M 109, Jun 4, 2024 - 2000p (20 frames = 200s, aborted)
M 109, Jul 8, 2024 - 1800p (180 frames = 1800s)		M 109, Jul 8, 2024 - 1800p (180 frames = 1800s), processed
M 109, Jul 8, 2024 - 1800p (90 frames = 900s)		M 109, Jul 8, 2024 - 1800p (90 frames = 900s), processed
M 109, Jul 8, 2024 - 1800p (90 frames = 900s), processed and denoised (DN)		M 109, Jul 8, 2024 - 1800p (180 frames = 1800s), processed and denoised (DN)