NGC 6888

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

On this page I collect my observations of the galactic emission nebula NGC 6888 (Crescent Nebula) in constellation Cygnus.

Introduction

The galactic emission nebula NGC 6888 (Crescent Nebula) in constellation Cygnus is faint and better suited to larger telescopes. NGC 6888 is illuminated by a so-called Wolf-Rayet star with the designation WR 136. The gas of the nebula was presumably also ejected by this star.

Since NGC 6888 is an emission nebula, it responds well to the Vespera's Dual Band Filter and to the Dwarf mini DuoBand Filter.

In the vicinity of NGC 6888, there is the open start cluster (or asterism) NGC 6874 (Cygnus).

NGC 6888 (Crescent Nebula)		NGC 6874
Size: 18' x 12' (Stoyan) Distance: 6,000 light years (Stoyan) Rating: * (Stoyan)		Size: 9' (SkySafari) Distance: 5,500 light years (SkySafari) Rating: ---

Map

The galactic emission nebula NGC 6888 (Crescent Nebula) in constellation Cygnus (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Best Own Photos

eVscope


NGC 6888 - Nov 24, 2020	NGC 6888 - Nov 24, 2020	NGC 6888 - Nov 24, 2020

NGC 6888 - Nov 24, 2020, photo on top processed	NGC 6888 - Nov 24, 2020, photo on top processed	NGC 6888 - Nov 24, 2020, photo on top processed

eVscope 2 (3)


NGC 6888 - Sep 6, 2023, 21 min	NGC 6888 - Oct 10, 2023, 29 min	NGC 6888 - Dec 17, 2023, 34 min

NGC 6888 - Sep 6, 2023, photo on top processed	NGC 6888 - Oct 10, 2023, photo on top processed	NGC 6888 - Dec 17, 2023, photo on top processed

Vespera


NGC 6888, Aug 15, 2022 - original (30 frames = 300 seconds)		NGC 6888, Aug 15, 2022 - original (45 frames = 450 seconds)

NGC 6888, Oct 17, 2022 - original (188 frames = 1880 seconds)		NGC 6888, Oct 17, 2022 - original (188 frames = 1880 seconds), processed

Vespera Pro


NGC 6888, Aug 8, 2024 - 1800 (219 frames = 2190s), section		NGC 6888, Aug 8, 2024 - 1800 (219 frames = 2190s), section, processed

NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter		NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter, processed

NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter, further processed		NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter, further processed and denoised (TP)

Dwarf mini


NGC 6888, Sep 9, 2026 - original (59 frames = 15 min)		NGC 6888, Sep 9, 2026 - Original (59 frames = 15 min), processed with Stellar Studio and post-processed

NGC 6888, Sep 9, 2026 - first Frame		NGC 6888, Sep 9, 2026 - 8th frame

NGC 6888, Sep 11, 2026 - original (98 frames = 98 min)		NGC 6888, Sep 11, 2026 - original (98 frames = 98 min), processed with Stellar Studio and post-processed

NGC 6888, Sep 11, 2026 - oiginal (98 frames = 98 min), processed with Stellar Studio and post-processed, denoised with TP		NGC 6888, Sep 11, 2026 - original (98 frames = 98 min), processed with Stellar Studio, post-processed and then made brighter

		Evaluation with nova.astrometry.net indicated the open star cluster NGC 6874

My Own Observations

Observations August to November 2020

August 20, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 6888 photographed (n.o., r.f.)
August 23, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 6888 photographed (n.o., r.f.)
September 7, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 6888 photographed (n.o., r.f.)
November 24, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 6888 photographed (n.o., r.f.)

Observations August to November 2022

August 15, 2022 (Mühlhausen/Kraichgau: Vespera): NGC 6888 photographed
October 17, 2022 (Mühlhausen/Kraichgau: Vespera): NGC 6888 photographed (> 30 min)
November 2, 2022 (Mühlhausen/Kraichgau: eVscope2): NGC 6888 photographed, more or less nothing to see

Observations September to December 2023

September 6, 2023 (Mühlhausen/Kraichgau: eVscope2): NGC 6888 photographed (V. 2.4.1, DDT)
October 10, 2023 (Mühlhausen/Kraichgau: eVscope2): NGC 6888 photographed (V. 2.5, DDT)
December 17, 2023 (Mühlhausen/Kraichgau: eVscope2): NGC 6888 photographed (V. 2.5, DDT)

Observations August 2024

August 8, 2022 (Mühlhausen/Kraichgau: Vespera Pro): NGC 6888 photographed
August 10, 2022 (Mühlhausen/Kraichgau: Vespera Pro): NGC 6888 photographed with Dual Band Filter

Observations September 2026

September 9, 2026 (Mühlhausen/Kraichgau: Dwarf mini): NGC 6888 photographed (15/60/Astro, AZ); cancelled after 15 min because of clouds
September 11, 2026 (Mühlhausen/Kraichgau: Dwarf mini): NGC 6888 photographed with Duo filter (60/60/Duo, EQ), 98 min (with NGC 6874)

References

NGC 6888 (Wikipedia): en.wikipedia.org/wiki/NGC_6888
NGC 6874 (Wikipedia): de.wikipedia.org/wiki/NGC_6874 (in German)

On this Site

Appendix: My Own Photos

eVscope


NGC 6888 - Aug 20, 2020	NGC 6888 - Aug 23, 2020	NGC 6888 - Aug 23, 2020

NGC 6888 - Aug 20, 2020, processed	NGC 6888 - Aug 23, 2020, processed	NGC 6888 - Aug 23, 2020, processed

NGC 6888 - Aug 20, 2020, processed alternatively	NGC 6888 - Aug 23, 2020, processed alternatively	NGC 6888 - Aug 23, 2020, processed alternatively

nova.astrometry.net proves that it is NGC 6888	NGC 6888 - Sep 7, 2020	NGC 6888 - Sep 7, 2020, processed

	NGC 6888 - Sep 7, 2020	NGC 6888 - Sep 7, 2020, processed

NGC 6888 - Nov 24, 2020	NGC 6888 - Nov 24, 2020	NGC 6888 - Nov 24, 2020

NGC 6888 - Nov 24, 2020, photo on top processed	NGC 6888 - Nov 24, 2020, photo on top processed	NGC 6888 - Nov 24, 2020, photo on top processed

eVscope 2 (3)


NGC 6888 - Nov 2, 2022	NGC 6888 - Sep 6, 2023, 21 min	NGC 6888 - Oct 10, 2023, 29 min

NGC 6888 - Nov 2, 2022, photo on top processed	NGC 6888 - Sep 6, 2023, photo on top processed	NGC 6888 - Oct 10, 2023, photo on top processed

NGC 6888 - Dec 17, 2023, 34 min	NGC 6888 - Dec 17, 2023, photo left processed

Vespera


NGC 6888, Aug 15, 2022 - original (30 frames = 300s)		NGC 6888, Aug 15, 2022 - original (45 frames = 450s)

NGC 6888, Oct 17, 2022 - original (188 frames = 1880s)		NGC 6888, Oct 17, 2022 - original (188 frames = 1880s), processed

Vespera Pro


NGC 6888, Aug 8, 2024 - 1800 (219 frames = 2190s), section		NGC 6888, Aug 8, 2024 - 1800 (219 frames = 2190s), section, processed

NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter		NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter, processed

NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter, further processed		NGC 6888, Aug 10, 2024 - 1800 (219 frames = 2190s), section, Dual Band Filter, further processed and denoised (TP)

Dwarf mini


NGC 6888, Sep 9, 2026 - original (59 frames = 15 min)		NGC 6888, Sep 9, 2026 - Original (59 frames = 15 min), processed with Stellar Studio and post-processed

NGC 6888, Sep 9, 2026 - first frame		NGC 6888, Sep 9, 2026 - 8th frame

NGC 6888, Sep 11, 2026 - original (98 frames = 98 min)		NGC 6888, Sep 11, 2026 - original (98 frames = 98 min), processed with Stellar Studio and post-processed

NGC 6888, Sep 11, 2026 - oiginal (98 frames = 98 min), processed with Stellar Studio and post-processed, denoised with TP		NGC 6888, Sep 11, 2026 - original (98 frames = 98 min), processed with Stellar Studio, post-processed and then made brighter

		Evaluation with nova.astrometry.net indicated the open star cluster NGC 6874