Ethan Chen Astronomy Homepage


Celestial Object/Event Count
Binary/Multiple Star Systems75
Open Star Clusters10
Globular Star Clusters1
Nebulae8
Galaxies8
Northern Lights/Aurora Borealis2
Lunar Eclipses2
Solar Eclipses1
Asteroids1
Comets1

Featured Recent Photograph

NGC 6946 "Firework Galaxy" | 10/4/2025

(Ring Nebula and Andromeda Galaxy Core photographed on same day)

Firework Galaxy

Telescopes

5 Inch Celestron Reflector
Michigan

5 Inch Celestron

20 Inch Planewave Reflector "Apollo"
Summer Science Program 2024 - CU Boulder - Team 5

20 Inch Planewave

Version History

12/22/2025:
- Added Hawk and Hornet 2025-2026 Astronomy C Materials

12/19/2025:
- Added Northview 2022-2023 Fermi Questions C, Hawk and Hornet 2023-2024 Astronomy C, Eagle Invitational 2024-2025 RFTS Materials

12/7/2025:
- Added MasonSO 2025-2026 Astronomy C, Experimental Design C Materials

10/4/2025:
- Added Ring Nebula, Firework Galaxy, Andromeda Galaxy to DSO gallery

9/18/2025:
- Added Saturn photos to general gallery

9/15/2025:
- Added 70 Ophiuchi to Binary Star Gallery

8/16/2025:
- Added Izar (Epsilon Bootis) to Binary Star Gallery
- Split DSO Gallery into three sections (Nebulae, Galaxies, Clusters)
- Added recent photograph section

8/12/2025:
- Updated Eta Cassiopeiae photo
- Added Favicon (website tab icon)

8/3/2025:
- Website launch