Zeta Ophiuchi, a brilliant blue giant star in the constellation Ophiuchus, is known as the “runaway star” due to its high-speed movement through space. This motion, caused by a past supernova explosion of its companion star, creates a captivating bow shock. Despite its luminosity, interstellar dust obscures its brilliance from casual observers.
Tag Archives: Astronomy
From Park Bench to Stardust: Spotting Comet Hale‑Bopp in 1997
Relive the magic of Comet Hale-Bopp. A personal reflection on a lifetime of observing, from a 1997 park bench to a lifelong journey through the stars.
Eta Boötis (Muphrid): The Double Star Neighbor Beside Arcturus
Eta Boötis, known as Muphrid, is a subgiant star roughly 37 light-years from Earth, overshadowed by the brighter Arcturus. Muphrid shines with a magnitude of 2.7 and is accompanied by a fainter companion star. Observations reveal challenges in identifying its companions, highlighting its unique charm in the spring sky. η Boötis, HR 5235, HD 121370, HIP 67848, SAO 100766, BD+18°2759, SHJ 169
Messier 20 (NGC 6514): The Trifid Nebula in Sagittarius
The Trifid Nebula, located in Sagittarius, is best viewed during summer months from June to August. Discovered by Charles Messier in 1764, it serves as a stellar nursery, approximately 5,200 light-years away. Modern telescopes have uncovered hidden stars and complex structures, making it a remarkable subject for backyard astronomers.
IC 4756: Graff’s Cluster in Serpens
Explore IC 4756, a bright open cluster in Serpens visible in summer skies. A beautiful binocular target amid rich star fields and nearby clusters.
Iota Cassiopeiae: An Unforgettable Triple
Discover Iota Cassiopeiae, a triple star system hidden in Cassiopeia’s “W.” Through a telescope, it reveals a stunning trio of diamond-like stars.
The Horsehead Nebula (IC 434): A Shadow in the Stars
The Horsehead Nebula, located in Orion, is recognized for its iconic silhouette but is faint and challenging to observe. First discovered in 1888 by Williamina Fleming, it is a stellar nursery contributing to star formation. Ideal viewing occurs between December and March, away from city lights using larger telescopes.
Messier 21 (NGC 6531): A Compact Open Cluster in Sagittarius
Messier 21, discovered by Charles Messier in 1764, is a compact open star cluster in Sagittarius. At approximately 3,900 light-years away, it contains 57 stars and offers a unique beauty, especially when viewed with binoculars or a telescope. It resides near the Trifid Nebula, making it a notable observation destination.
The Garden Astronomer 