Basic astronomy and night sky information
General articles and links about astronomy and the night sky.
In my latest article in Sky & Telescope magazine, we take a tour of sights along the northern Milky Way that highlight some key phases of a star’s life, both large, massive stars that burn hot and die young, as well as smaller, average-size stars like our Sun that live more stable, measured lives. Along the way, we see some spectacular sights for a small telescope for visual observing or astrophotography.
Click on the thumbnail to read the article (PDF format, 8MB).
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“These are the last days of the waning year;
High in the west now stands Deneb,
Great Star of the Cross…”
– Robert Burhnam Jr., Burnham’s Celestial Handbook, vol. 2.
An icy blast of cold and snow landed across the western Canadian prairies this week, but it wasn’t quite cold enough to keep me from having a long last look at the stars of northern summer now fading fast in the western sky. Scanning slowly with a pair of wide-field ‘constellation’ binoculars, I took in the stars of Lyra and Aquila, Delphinus and Sagitta, and the open star cluster IC 4665 near the asterism of Taurus Poniatowski that spells out a contradictory “HI” as it heads below the horizon until spring. But I reserved my final gaze of the evening for one of my favorite patches of sky near the star Deneb at the top of the Northern Cross and the adjacent glow of NGC 7000, the North America Nebula, about 3o to the east. [Read more…] about Going Analog with the North America Nebula
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While awaiting the appearance of the Milky Way, not to mention astronomical darkness which won’t come again until July at my northerly latitude, I’ve been having fun snapping photos of galaxies with a 50 mm smart scope and other instruments of modest aperture. I recently tested another diminutive telescope, the Takahashi FOA-60 to see what it could do. While primarily intended to be a visual instrument, this telescope features superb optical quality, but it has a relatively slow focal ratio of f/8.8 which is not ideal for astrophotography. Nevertheless, I hooked up a small camera, the monochrome and highly sensitive ZWO ASI533MM-Pro and a Tele Vue 0.8x focal reducer to coax the optics of this little telescope down to a more reasonable f/7. Then I aimed it up out of the plane of the Milky Way into intergalactic space and snapped some photos of galaxies in and around Ursa Major to see what I could capture [Read more…] about Galaxy Hunting with a 60 mm Telescope
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“It is nightfall; the clouds have vanished,
The sky is clear, pure, and cold…
Silently I watch the River of Stars…
Tonight I must enjoy life to the full,
For if I do not, next month, next year,
Who can know where I shall be?”
– Su T’ung-Po
A layer of fresh snow blankets the northern prairie, thin enough for the tops of golden wheat stubble to poke through, while a blast of arctic air from the northwest sweeps the darkening sky clean. Driving south on a secondary highway, an hour east of the city, I turn onto a back road and pull over by the side in complete darkness save for the lights of a farmhouse half a mile away. Emerging into the cold, I exhale a frosty breath and gaze upward into a bowl of black sky full of crackling stars. To the west I see Pegasus plunging towards the horizon with Andromeda in tow. The Big Dipper lies low in the north, its handle grazing the flat landscape and bowl pointed to the upper right. But the best view tonight lies overhead along the pale arc of the northern Milky Way through the bright constellations Perseus and Auriga, and down to the east skirting Orion’s eastern shoulder, passing the feet of the twins of Gemini, and into Canis Major, the Big Dog, with Sirius hovering over a snow-covered spruce tree like a Christmas star. As my eyes grow adapted to the dark, the outlines of our home galaxy begin to emerge. I grab my little telescope from the back of the car, set it securely on its mount, and get to work [Read more…] about The Winter Milky Way
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The dim zodiacal constellation Libra harbors just a handful of dim deep-sky objects and no bright stars. But within its boundaries lies the Methuselah Star, an ancient relic of the early universe born from the ashes of the first stars that formed after the Big Bang. It’s likely the oldest object of any kind you will ever see, and it’s an easy target in a pair of binoculars or small telescope. [Read more…] about The Methuselah Star
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