NGC 2403

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 NGC 2403 in the constellation Camelopardis.

Introduction

The barred spiral galaxy NGC 2403 in the constellation Camelopardis is regarded as one of the best galaxies for small telescopes. It remains unclear why Messier overlooked it. It is fairly impressive in the eVscope, but a little small in the Vespera.

The galaxy is a member of the M 81 Group.

NGC 2403
Size: 7' x 4' / 21.9' × 12.3' (Stoyan/Wikipedia)
Distance: 13/10 million light years (Stoyan/Wikipedia)
Rating: ** (Stoyan)

M 81 Group

The M 81 Group is a galaxy group in the constellations Ursa Major and Camelopardalis that includes the galaxies Messier 81 and Messier 82, as well as several other galaxies with high apparent brightnesses.

Map

The barred spiral galaxy NGC 2403 in the constellation Camelopardis (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)

My Best Own Photos

eVscope

NGC 2403 - Mar 25, 2020		NGC 2403 - Mar 25, 2020		NGC 2403 - Mar 25, 2020
NGC 2403 - Mar 25, 2020, photo above processed		NGC 2403 - Mar 25, 2020, photo above processed		NGC 2403 - Mar 25, 2020, photo above processed

Vespera

NGC 2403, Jan 28, 2024 - original, 1790s, CLS Filter		NGC 2403, Jan 28, 2024 - large, 1790s, CLS-Filter, processed
NGC 2403, Jan 28, 2024 - original, mosaic, 1140s (1.5 runs)		NGC 2403, Jan 28, 2024 - large, mosaic, 1140s (1.5 runs), processed

Vespera Pro

NGC 2403, Feb 19, 2025 - 1800, 1820s, section		NGC 2403, Feb 19, 2025 - 1800, 1820s, section, processed
NGC 2403, Feb 19, 2025 - 1800, 1820s, section, processed and denoised (PAI)

My Own Observations

Observations March to April 2020

• March 25, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 2403 photographed with long exposures.
• April 8 and 11, 2020 (Mühlhausen/Kraichgau: eVscope): NGC 2403 photographed (full moon on April 8).

Observations January 2024

• January 28, 2024 (Mühlhausen/Kraichgau: Vespera): NGC 2403 photographed.
• January 29, 2024 (Mühlhausen/Kraichgau: Vespera): NGC 2403 photographed as a mosaic; stopped because of clouds

Observations February 2025

• February 19, 2025 (Erkerode: Vespera Pro): NGC 2403 photographed (30 min)

References

• NGC 2403 (Wikipedia): en.wikipedia.org/wiki/NGC_2403
• M81 Group (Wikipedia): en.wikipedia.org/wiki/M81_Group

On this Site

• Unistellar eVscope Information
• Vaonis Vespera - Information
• Vaonis Vespera Pro - Information

Appendix: My Own Photos

eVscope

NGC 2403 - Mar 25, 2020		NGC 2403 - Mar 25, 2020		NGC 2403 - Mar 25, 2020
NGC 2403 - Mar 25, 2020, photo above processed		NGC 2403 - Mar 25, 2020, photo above processed		NGC 2403 - Mar 25, 2020, photo above processed
NGC 2403 - Apr 8, 2020, full moon		NGC 2403 - Apr 8, 2020, full moon		NGC 2403 - Apr 11, 2020, after full moon
NGC 2403 - Apr 8, 2020, photo above processed		NGC 2403 - Apr 8, 2020, photo above processed		NGC 2403 - Apr 11, 2020, photo above processed

Vespera

NGC 2403, Jan 28, 2024 - original, 1790		NGC 2403, Jan 28, 2024 - large, 1790, processed
NGC 2403, Jan 28, 2024 - original, mosaic, 1140s (1.5 runs)		NGC 2403, Jan 28, 2024 - large, mosaic, 1140s (1.5 runs), processed

Vespera Pro

NGC 2403, Feb 19, 2025 - 1800, 1820s, section		NGC 2403, Feb 19, 2025 - 1800, 1820s, section, processed
NGC 2403, Feb 19, 2025 - 1800, 1820s, section, processed and denoised (PAI)