After being photographed at the end of February, showing off 3 green tails, comet 2P/Encke prepares for the final act of this apparition: a week-long plunge through the stars of Pisces toward the western horizon and perihelion. At the end of February the comet had brightened to almost 8th magnitude. Encke’s orbit this week takes it between the earth and sun — which will cause it to reach peak brightness and then disappear from sight . Use the horizon diagrams here to help you spot it. Continue reading “Comet 2P/Encke’s Blaze of Glory”
Where does the name Tele Vue come from? Just look at the initials: TV. Al Nagler’s initial products were television projector lenses. These lenses were placed in front of your television to project an enlarged image on a screen. That was “big screen TV” in 1977! However, Al also wanted a name that would be appropriate if he ever entered the amateur astronomy market. Continue reading “Tele Vue: What’s in a Name?”
Al Nagler’s posting last week (Winter Star Party 2017: in the Eye of “Kermitis”) described his experience designing the optical system for the visual infinity display simulator used by the Apollo astronauts to land the “LEM” on the moon. Through a long-term loan from the Smithsonian, the Tech Works! technology museum in Binghamton, NY, has obtained parts of LEM simulator and asked Al to consult on its restoration. Continue reading “Al’s First “Space Walk Experience” — in the News”
Creating “goodies” for the observing enthusiast has been our continuing passion. Now you can return the favor by celebrating our 40-years with #televue40 on your social media Tele Vue images. We’ll link to the best ones through our blog. Here are some guidelines: Continue reading “#televue40: Show Us Your Tele Vue Images!”
For 40-years Tele Vue has focused on a singular target; delivering a customer experience “…even better than you imagined.” From product concept through to customer service, Tele Vue delivers a level of quality few others can match. Stay tuned to this blog for the latest Tele Vue news and comments from the Tele Vue staff.
This February, Comet 2P/Encke sweeps by the Circlet of Pisces asterism as the comet nears the sun along the western horizon. It’s easy to find in mid-February, as it appears inside a 5° circle centered on magnitude 4 Omega Piscium. It will be brightest late this month into the first part of March. Continue reading “Comet 2P/Encke in the Evening Sky”
Comet 45P/Honda-Mrkos-Pajdusakova exits the glare of the sun and is visible in the morning sky. It will be only 0.09 AU from Earth on February 11, so it’ll be pretty bright — but also very fast! If you saw it in January, when it moved a whole 5° in two-weeks, you’re in for a chase across the sky as it starts the month moving 5° a day! Continue reading “Comet 45P/Honda-Mrkos-Pajdusakova in the Morning Sky”
After the penumbral eclipse of the new moon on February 11th, we have an Annular Solar Eclipse just a half-lunar-cycle later. Unlike the lunar eclipse, this one will need proper filtering to observe naked eye or through scopes. The eclipse is annular because only the central part of the sun is obscured, leaving a thin ring (annulus) of light around the edge. This happens because the moon’s orbit brings it closer and further from the earth — so its angular size from earth can vary from 29.4-arc-minutes to 33.5-arc-minutes. The size of the sun hardly varies from 32-arc-minutes due to the small eccentricity of the earth’s orbit. Thus, the moon can appear to be bigger or smaller than the sun according to the circumstances. Continue reading “Countdown: Annular Solar Eclipse Feb. 26, 2017”
Some phase of this lunar eclipse is visible from most of the planet. All phases are visible in the region from the eastern parts of North and South America to Europe, Africa, and western Asia. The eclipse is “penumbral” because the moon misses the deepest part of the Earth’s shadows — the “umbra”. This also means it’s easy to miss the initial and later stages as the darkening is not as dramatic and it will lack the color-cast of an eclipse that includes passage through the umbra.
Tele Vue is pleased to announce new DeLite focal lengths are now shipping! Rounding out the series will be focal lengths of 13mm, 4mm, and 3mm. These new DeLites are of course parfocal with the current 18.2mm, 15mm, 11mm, 9mm, 7mm, and 5mm models. Continue reading “NOW SHIPPING: New DeLite Focal Lengths!”