Messier 52 (M 52)

Introduction | Map | My Own Photos | My Own Observations | References

On this page I collect my observations of the open star cluster M 52 (NGC 7654) in the constallation Cassiopeia.

Introduction

According to Stoyan, the open star cluster M 52 in the constellation Cassiopeia belongs to the richest open star clusters of the northern sky. Karkoschka, on the other hand, characterized it as "many weak stars in the telescope." For me, it was hard to find at the beginning, and there was not much to see (see Karkoschka) - next time, it got better...

With the Vespera, it can be observed together with NGC 7635 (Bubble Nebula). A Vespera Pro mosaic can also include NGC 7538 and C9 (Cave Nebula).

M 52 (NGC 7654)		NGC 7635 (Bubble Nebula)
Size: 10' (Stoyan) Distance: 4,600 light years (Stoyan) Rating: *** (Stoyan).		Size: 15' x 8' (Wikipedia) Distance: 8,800 (Stoyan) (Wikipedia) Rating: * (Stoyan)

Map

M 52 in constellation Cassiopeia (top) and further DSOs that I observed around Cassiopeia. (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

M 52 with the galactic emission nebula NGC 7635 (Bubble Nebula) and further DSO in the constellation Cassiopeia (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Own Photos

eVscope


M 52 - Feb 5, 2020	M 52 - Feb 5, 2020, processed	M 52 - Feb 6, 2020

M 52 - Mar 18, 2020	M 52 - Mar 18, 2020, processed

M 52 - Aug 24, 2020	M 52 - Aug 24, 2020, processed

eVscope 2


M 52 - Nov 2, 2022		M 52 - Nov 2, 2022, processed

Vespera

M 52, Aug 25, 2022 (with NGC 7635) - original (94 frames = 940s)

Vespera Pro


M 52 with NGC 7635, Aug 25, 2024 - 2000p (235 frames = 2350s)		M 52 with NGC 7635, Aug 25, 2022 - 2000p (235 frames = 2350s), processed

		M 52 with NGC 7635, Aug 25, 2022 - 2000p (235 frames = 2350s), processed and denoised (PAI)

M 52 with NGC 7635, NGC 7538, and C9, Aug 26, 2024 - 2400p (907 frames = 9070s, about 2.5 h), processed		M 52 with NGC 7635, NGC 7538, and C9, Aug 26, 2024 - 2400p (907 frames = 9070s, about 2.5 h), processed and denoised (DN)

My Own Observations

Observations September/October 2018

Sep 28, 2018 (Sumène, France: PS 72/432 , AZ Pronto Mount): M 52 observed with PS 72/432 and not seen much - small...
Oct 4, 2018 (Sumène, France: PS 72/432 , AZ Pronto Mount): M 52 observed with PS 72/432 and seen better this time.

Observations February to September 2020

February 5-6, 2020 (Mühlhausen/Kraichgau: eVscope): M 52 photographed
March 18, 2020 (Mühlhausen/Kraichgau: eVscope): M 52 photographed
August 24, 2020 (Mühlhausen/Kraichgau: eVscope): M 52 photographed in the new rectangular format without overlay
September 4, 2020 (Mühlhausen/Kraichgau: eVscope): M 52 photographed (n.o., r.f.), not usable...

Observations August to November 2022

August 25, 2022 (Mühlhausen/Kraichgau: Vespera): M 52 photographed together with NGC 7635
November 2, 2022 (Mühlhausen/Kraichgau: eVscope2): M 52 photographed

Observations August 2024

August 25, 2024 (Mühlhausen/Kraichgau: Vespera Pro): M 52 and NGC 7635 photographed together as a mosaic (about 39 min)
August 26, 2024 (Mühlhausen/Kraichgau: Vespera Pro): M 52 photographed together with NGC 7635, NGC 7538, and C9/Sh2-155 with Dual Band Filter as a mosaic (about 6 h in total, 2.5 h observed); M 52 attenuated by the filter.

References

Messier Catalogue - Messier 52: messier.seds.org/m/m052.html
Messier 52 (Wikipedia): en.wikipedia.org/wiki/Messier_52
NGC 7635 (Wikipedia): en.wikipedia.org/wiki/NGC_7635