Mars will exceed 24-arc-sec in diameter between July 23rd and August 9th, 2018. This is 97 percent of the maximum of 25.13-arc-sec diameter attained during the last of the ‘favorable’ apparitions, which occurred in 2003.Association of Lunar and Planetary Observers
Most amateur astronomers will ignore the full moon. The best telescopic observations can be had before and after the moon is full. For instance, when the moon is half-illuminated, at first quarter, as it waxes toward full. Along the night and day terminator line bisecting the moon are the boldly cast shadows of mountains, craters, rilles, and basins. This is where your telescopic lunar observations should begin.
The “supermoon” — a full moon that occurs when the moon is nearest the earth — seems to garner a lot of media attention. Very little scrutiny is paid to the occurrences of “micromoon” — an appellation bestowed when the full moon occurs at the furthest reaches of its orbit. Just Google “supermoon” and you’ll get 10-million results vs. a paltry 45,000 for “micromoon”. But the micromoon offers an interesting contrast to the supermoon. Continue reading “June 9th: Night of the “Micromoon””
On the night of March 4/5, the dark side of the first-quarter Moon will slide though the Hyades (open cluster) in Taurus and cover several bright stars before moving on to occult The Bull’s eye: the red-giant star Aldebaran (α-Tauri).
Continue reading “The Moon in the “Bull’s Eye””