NGC 3628

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 NGC 3628 in the constellation Leo, which is seen from the edge. Together with M 65 and M 66 it forms the Leo Triplet (Arp 317, Holm 246).

Introduction

The spiral galaxy NGC 3628 in the constellation Leo is forms a conspicuous group with M 65 and M 66 (Leo Triplet, Arp 317, Holm 246) and is seen from the edge; it is the faintest of the three galaxies in the triplet. The Leo Triplet cannot be observed as a whole in the eVscope (2) (about 1.2° distance to the other two galaxies), but this is possible with the Vespera and Vespera Pro.

NGC 3628		M 65 (NGC 3623)		M 66 (NGC 3627)
Size: 8' x 2' (Stoyan) Distance: 34 million light years Rating: * (Stoyan)		Size: 5 x 1.5' (Stoyan) Distance: 33 million light years Rating: ** (Stoyan)		Size: 4.5' x 2' (Stoyan) Distance: 34 million light years Rating: ** (Stoyan)

Map

The spiral galaxy NGC 3628 in the constellation Leo with M 65 and M 66 (Leo Triplet) (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

The Leo Triplet: NGC 3628 (selected), M 66, and M 65 (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Best Own Photos

ZWO ASI224 at Omegon PS 72/432

NGC 3628 - Apr 13, 2021 - 48 frames, 10 s, gain 134, processed

eVscope


NGC 3628 - Mar 7, 2021	NGC 3628 - Mar 8, 2021	NGC 3628 - Mar 8, 2021

NGC 3628 - Mar 7, 2021, photo above processed	NGC 3628 - Mar 8, 2021, photo above processed	NGC 3628 - Mar 8, 2021, photo above processed

eVscope 2


NGC 3628 & M 65 - Apr 17, 2022		NGC 3628 - April 10, 2022

NGC 3628 & M 65 - Apr 17, photo on top processed		NGC 3628 - April 10, 2022, photo on top processed

Vespera


NGC 3628 with M 65 and M 66 (Leo Triplet) - Jun 6, 2023, mosaic, 2880s, original		NGC 3628 with M 65 and M 66 (Leo Triplet) - Jun 6, 2023, mosaic, 2880s, large, photo left processed

NGC 3628 with M 65 and M 66 (Leo Triplet) - Jun 7, 2023, 2390s, original		NGC 3628 with M 65 and M 66 (Leo Triplet) - Jun 6, 2023, HD section from mosaic on top, 2880s, large

Vespera Pro

Leo Triplet


NGC 3628 with M 65 and M 66 (Leo Triplet), May 13, 2024 - mosaic, 3600s, 2000p		NGC 3628 with M 65 and M 66 (Leo Triplet), May 13, 2024 - section from mosaic, 3600s, 2000p

NGC 3628 with M 65 and M 66 (Leo Triplet), May 13, 2024 - ditto, 3600s, 2000p, processed		NGC 3628 with M 65 and M 66 (Leo Triplet), May 13, 2024 - ditto, denoised (DN), 2000p

NGC 3628 with M 65 and M 66 (Leo Triplet), March 8, 2025 - 340s, 2000p		NGC 3628 with M 65 and M 66 (Leo Triplet), March 8, 2025 - 340s, 2000p, processed

		NGC 3628 with M 65 and M 66 (Leo Triplet), March 8, 2025 - 340s, 2000p, processed and denoised (PAI)

NGC 3628 with M 65 and M 66 (Leo Triplet), March 8, 2025 - 340s, 2000p, processed from TIFF		NGC 3628 with M 65 and M 66 (Leo Triplet), March 8, 2025 - 340s, 2000p, processed from TIFF and denoised (PAI)

My Own Observations

Observations March/April 2020

March 13, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 3628 photographed
April 23, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 3628 photographed in the new rectangular format without overlay

Observations March to May 2021

March 7, 2021 (Mühlhausen/Kraichgau: eVscope): NGC 3628 photographed (r.f., n.o.), eVscope misfocused, partly exposed manually
March 8, 2021 (Mühlhausen/Kraichgau: eVscope): NGC 3628 photographed (r.f., n.o.), partly exposed manually
April 13, 2021 (Mühlhausen/Kraichgau: PS72 on AZ-GTi, ASI224): NGC 3628 photographed (10 seconds); stars a little bloated
May 31, 2021 (Mühlhausen/Kraichgau: eVscope): NGC 3628 photographed (n.o., r.f.), new image size and processing.

Observations April 2022

April 9, 2022 (Mühlhausen/Kraichgau: eVscope 2): NGC 3628 photographed (app version 1.5)
April 17, 2022 (Mühlhausen/Kraichgau: eVscope 2): NGC 3628 photographed together with M 65 and alone (app version 1.5)

Observations June 2023

June 6, 2023 (Mühlhausen/Kraichgau: Vespera): NGC 3628 photographed together with M 65 and M 66 (Leo Triplet) as a mosaic (2880s)

Observations May 2024

May 13, 2024 (Mühlhausen/Kraichgau: Vespera Pro): NGC 3628 photographed together with M 66 and M 65 (Leo Triplet)

Observations March 2025

March 8, 2025 (Mühlhausen/Kraichgau: Vespera Pro): NGC 3628 photographed together with M 66 and M 65 (Leo Triplet), aborted after nearly 6 min, poor...

References

NGC 3628 (Wikipedia): en.wikipedia.org/wiki/NGC_3628
Messier Catalogue - Messier 65: messier.seds.org/m/m065.html
Messier Catalogue - Messier 66: messier.seds.org/m/m066.html
Messier 65 (Wikipedia): en.wikipedia.org/wiki/Messier_65
Messier 66 (Wikipedia): en.wikipedia.org/wiki/Messier_66

On this Site

Appendix: My Own Photos