Messier 105 (M 105), NGC 3384, NGC 3389

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

On this page I collect my observations of the elliptical galaxy M 105 (NGC 3379) in the constellation Leo as well as of the two galaxies NGC 3384 (elliptical) and NGC 3389 (spiral).

Introduction

The elliptic galaxy M 105 in the constellation Leo is bright and can be seen together with the galaxies NGC 3384 (elliptical, physical companion of M 105) and the smaller NGC 3389 (spiral, far in the background) in the same field of view in the eVscope. With the Vespera (Pro), the galaxies M 95 and M 96 can also be included in the photo. The three galaxies form a galaxy trio, but not a group, because NGC 3389 is far in the background (and not a member of the Leo I group).

The galaxy M 105 is part of a galaxy group, the M 96 group, to which also M 95, M 96, NGC 3384, NGC 3377 and further galaxies (NGC 3299, NGC 3412, NGC 3489) belong. The M 96 group forms, together with the M 66 group (Leo Triplet, Arp 317; consists of M 65, M 66, and NGC 3628) the Leo I group.

The galaxy IC 643 (on some photos) is lenticular and more than 300 million light years away. The barred spiral galaxy (on one photo) IC 648 is even 474 million light years away.

M 105 (NGC 3379)	NGC 3384	NGC 3389
Size: 4.9' × 4.3' (SkySafari Distance: 40 million light years (Stoyan) Rating: * (Stoyan)	Size: 5.2' x 2.4' (SkySafari) Distance: 40 million light years (Stoyan) Rating: * (Stoyan)	Size: 2.7' x 1.2' (SkySafari) Distance: 54 million light years (Wikipedia) Rating: ---

IC 643	M 95 (NGC 3351)	M 96 (NGC 3368)
Size: 0.6' x 0.2' (Wikipedia) Distance: 309 million light years (Wikipedia) Rating: ---	Size: 7.4′ × 5' (Wikipedia) Distance: 40 million light years Rating: * (Stoyan)	Size: 7.8' × 5.2' (Wikipedia) Distance: 40 million light years Rating: * (Stoyan)

IC 648
Size: 0.8' x 0.5' (Wikipedia) Distance: 474 million light years (Wikipedia) Rating: ---

Map

The elliptical galaxy M 105 in the constellation Leo (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

The elliptical galaxy M 105 in the constellation Leo with the two galaxies NGC 3384 and NGC 3389 form a galaxy trio, but no group; the first two belong to the galaxy group Leo I, which also includes M 95 and M 96. Moreover, you can see the much more distant galaxies IC 643 and IC 648. (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Best Own Photos

Atik Infinity & C5 (April 4, 2021)


M 105 (+ NGC 3384 und NGC 3389) - Apr 4, 2021		M 105 (+ NGC 3384 und NGC 3389) - Apr 4, 2021, processed		M 105 (+ NGC 3384 und NGC 3389) - Apr 4, 2021, processed (Polarr)

ZWO ASI224 at Omegon PS 72/432


M 105 (+ NGC 3384 und NGC 3389) - Apr 13, 2021 - 17 frames, 10 s, gain 300		M 105 (+ NGC 3384 und NGC 3389) - Apr 13, 2021 - 17 frames, 10 s, gain 300, processed

eVscope


M 105 (+ NGC 3384 und NGC 3389) - Mar 22, 2020	M 105 (+ NGC 3384 und NGC 3389) - Mar 22, 2020	M 105 (+ NGC 3384 und NGC 3389) - Mar 22, 2020

M 105 (+ NGC 3384 und NGC 3389) - Mar 22, 2020, photo above processed	M 105 (+ NGC 3384 und NGC 3389) - Mar 22, 2020, photo above processed	M 105 (+ NGC 3384 und NGC 3389) - Mar 22, 2020, photo above processed

M 105 (+ NGC 3384 und NGC 3389) - Mar 7, 2021	M 105 (+ NGC 3384 und NGC 3389) - Mar 8, 2021	M 105 (+ NGC 3384 und NGC 3389) - Mar 8, 2021

M 105 (+ NGC 3384 und NGC 3389) - Mar 7, 2021, photo above processed	M 105 (+ NGC 3384 und NGC 3389) - Mar 8, 2021, photo above processed	M 105 (+ NGC 3384 und NGC 3389) - Mar 8, 2021, photo above processed

Vespera


M 95, M 96, M 105 and more, May 31, 2023 - mosaic, processed, large, 2310s		Evaluation with nova.astrometry.net

Small galaxies in the mosaic: IC 643, NGC 3345, NGC 3384, NGC 3389 (see evaluation)

Vespera Pro


M 95, M 96, M 105, and more, May 10, 2024 - mosaic, 2000p, 2940s		M 95, M 96, M 105, and more, May 10, 2024 - mosaic, processed, 2000p, 2940s

Observed sky region shown in Singularity		Evaluation with nova.astrometry.net
Small galaxies in the mosaic: IC 643, IC 648, NGC 3345, NGC 3384, NGC 3389, NGC 3412, NGC 3419, NGC 3367, NGC 3377, NGC 3357, NGC 3391, NGC 3338 (see evaluation)

M 95, M 96, M 105, and more, Feb 19, 2025 - 2000p, 30 min		M 95, M 96, M 105, and more, Feb 19, 2025 - 2000p, 30 min, processed

M 95, M 96, M 105, and more, Feb 19, 2025 - 2000p, 30 min, TIFF processed and denoised (PAI)		Evaluation with nova.astrometry.net
Small galaxies: IC 643,NGC 3345, NGC 3384, NGC 3389 (see evaluation)

M 105, and more, Feb 19, 2025 - section, 30 min, TIFF processed		M 105, and more, Feb 19, 2025 - section, 30 min, TIFF processed and denoised (PAI)

My Own Observations

Observations March/April 2020

March 13, 22, and 25, 2020 (Mühlhausen/Kraichgau: eVscope): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389.
April 22, 2020 (Mühlhausen/Kraichgau: eVscope): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (no overlay, rectangular format).

Observations March to June 2021

March 7, 2021 (Mühlhausen/Kraichgau: eVscope): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (r.f., n.o.), eVscope defocused, photos discarded
March 7, 2021 (Mühlhausen/Kraichgau: eVscope): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (r.f., n.o.), exposed manually
April 4, 2021 (Mühlhausen/Kraichgau: C5 on AZ-GTi-EQ, Atik Infinity ): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389
April 13, 2021 (Mühlhausen/Kraichgau: PS72 on AZ-GTi, ASI224): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (10 seconds); stars a little bloated
June 1, 2021 (Mühlhausen/Kraichgau: eVscope): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (n.o., r.f.), new image size and processing.

Observations March to April 2022

March 20, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (app version 1.5)
April 10, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (app version 1.5)
April 17, 2022 (Mühlhausen/Kraichgau: eVscope 2): M 105 photographed together with the two galaxies NGC 3384 and NGC 3389 (app version 1.5)

Observations May 2023

May 30, 2023 (Mühlhausen/Kraichgau: Vespera): M 105 photographed together with the two galaxies M 95 and M 96 and many small galaxies (large mosaic)
Mai 31, 2023 (Mühlhausen/Kraichgau: Vespera): M 105 photographed together with the two galaxies M 95 and M 96 and three small galaxies (NGC 3384, NGC 3389, IC 643) (medium-size mosaic)

Observations May 2024

May 10, 2024 (Mühlhausen/Kraichgau: Vespera Pro): M 105 photographed together with the two galaxies M 95 and M 96 and many small galaxies (mosaic)

Observations February 2025

February 19, 2025 (Erkerode: Vespera Pro): M 105 photographed together with the two galaxies M 95 and M 96 and many small galaxies (30 min)

References

Messier Catalogue - Messier 105: messier.seds.org/m/m105.html
Messier 105 (Wikipedia): en.wikipedia.org/wiki/Messier_105
NGC 3384 (Wikipedia): en.wikipedia.org/wiki/NGC_3384
NGC 3389 (Wikipedia): en.wikipedia.org/wiki/NGC_3389
IC 643 (Wikipedia): de.wikipedia.org/wiki/IC_643 (in German)
IC 648 (Wikipedia): de.wikipedia.org/wiki/IC_648 (in German)

On this Site

Appendix: My Own Photos