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cildarith
Carpal Tunnel
Reged: 08/26/04
Posts: 2122
Loc: San Diego, CA
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Recent Observations
04/09/07 10:39 AM Attachment (41 downloads)
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1. 31-Tau-1 Hydrae
We shall begin a little star-hop through northern Sextans just beyond that constellation's western border with a couple of objects in Hydra. Tau-1 Hydrae, which glimmers at magnitude 4.6 nearly 6° due north of Alphard (Alpha Hydrae), is a beautiful, widely separated double star. At 120x the primary gleams with a pure white light, while the 7th magnitude companion lying almost due north glows with a slightly warmer yellowish hue. Additional faint companions to the north and south make a pleasing string of five stars with the primary at the center of the strand. Tau-1 Hydrae is a spectroscopic binary and lies at a distance of 56 light-years; it is a main-sequence star of spectral type F6. Its companion is a star of spectral type K0.
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Eric
6" f/6 Parks Newtonian
10x50 Bushnell Binocs
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