Learn about the double star in Orion called Struve 700 and V1804 Orionis. The pretty set of blue-white stars shine around 7.8 magnitude and are a tight pair in telescope. My sketch shows what the binary looks like through a backyard telescope. They are a great pair to seek out when observing through Orion, the hunter, on winter days.
Author Archives: Wayne McGraw
Epsilon Arietis: A Rewarding, Tight Binary in Aries
Learn about Epsilon Arietis, a close binary white pair of stars in the constellation Aries, best viewed on autumn and winter nights. The two stars only lie 1.3 arcseconds apart, so a telescope will be needed to see both stars also known as Struve 333, STF 333, Eps Ari, SAO 75673, HD 18519, HR 887, HIP 13914, 48 Ari.
Struve 1850: A Wide Binary Star in Boötes
Struve 1850, a binary star system in the Boötes constellation, consists of two nearly identical A1V stars, easily observable with binoculars or small telescopes. Discovered by Friedrich Struve in 1823, they are over 800 light-years away. Their similar luminosity and proximity make them delightful targets for amateur astronomers. Also known as: STF 1850, HD 127067, SAO 83374, HIP 70786, HR 5414
Beta Draconis (Rastaban): The Dragon’s Eye
Beta Draconis, or Rastaban, is a prominent star in the constellation Draco, with an apparent magnitude of 2.8. This golden giant, situated 380 light-years away, is part of a binary system. Despite its brilliance, its companion is a dimmer star, visible only under optimal conditions. Also known as Bet Dra, Rastaben, Alwaid, Asuia, SAO 30429, HD 159181, 23 Dra, β Dra, 23 Draconis, HIP 85670, HR 6536, BU 1090
Mu Scorpii: A Pleasant Blue Visual Pair of Stars in Scorpius
Mu Scorpii, located in the tail of the Scorpion constellation, comprises two stars, Mu1 and Mu2, which appear close but are at different distances. Mu1 is a binary star system, while Mu2 is less luminous. Observations reveal the beauty of this pair, easily visible with binoculars, reminding us of the wonders of stargazing.
NGC 7006: The Ancient Lantern at the Rim of the Galaxy
NGC 7006, an elusive globular cluster located 135,000 light-years away in the constellation Delphinus, offers a unique challenge for amateur astronomers. Its faint visual magnitude of 10.6 makes it hard to detect, revealing a compact cluster over time through powerful telescopes. Observing it connects viewers with distant cosmic history. Also known as Caldwell 42.
Zeta Sagittae (Struve 2585): A Subtle Triple Star System in the Arrow Sagitta
Sagitta, a small constellation between Aquila and Vulpecula, features Zeta Sagittae, a fascinating triple star system. The brighter component, Zeta Sagittae A, shines at magnitude 5, while its companion, Zeta Sagittae B, is fainter at magnitude 9. Located near Altair, this hidden treasure is worth observing with a telescope. Also known as STF 2585, SAO 105298, 8 Sagittae, HR 7546, HIP 97496, HD 187362
Struve 2155: A Subtle Colorful Binary in Draco
The constellation Draco features the double star Struve 2155, a notable yet subtle binary system situated about 600 light-years away. Comprising a bright yellow giant and a dimmer blue companion, this pairing offers a unique visual experience. Observers can appreciate the contrast and beauty of this hidden gem during summer evenings. Also known as: SAO 17410, HIP 84465, HD 156890, 4198-01479-1, BD+60 1742
The Garden Astronomer 