61–80 of 100 results

Pro-Am Collaboration

Occultations by Possible Rings of Pluto This Week

Pluto will pass extremely close to an 8.7-magnitude star on September 27, 2007; observers should monitor the star's brightness electronically.

People, Places, and Events

Nominations Sought for Amateur Award

The American Astronomical Society (AAS) is now accepting nominations for the Chambliss Amateur Achievement Award.

Pro-Am Collaboration

New Chance To Confirm Asteroid Lucina's Moon

Late Wednesday night, September 19–20, 2007, observers across much of North America should watch for a possible occultation by asteroid 146 Lucina's satellite.

Pro-Am Collaboration

Help Prepare for Hubble Study of PQ And

Amateur observations of variable star PQ Andromedae are needed on September 11-12, 2007, to ensure a successful Hubble campaign.

Pro-Am Collaboration

Surprise Outburst of a New Dwarf Nova

A suspected dwarf nova is undergoing its first observed outburst and had reached 9th magnitude as of September 5, 2007. More observations are needed.

Pro-Am Collaboration

Map the Moon During Tomorrow's Lunar Eclipse

Please help us accurately map the edge of the Moon by timing occultations of stars during the August 28, 2007, total lunar eclipse.

Pro-Am Collaboration

Opportunity to Confirm an Asteroid's Moon

On Tuesday morning, August 21, 2007, observers across much of North America should watch for a possible occultation by asteroid 146 Lucina's satellite.

Pro-Am Collaboration

"New Star" in Vulpecula

On August 8, 2007, variable-star observer Hiroshi Abe discovered a 9th-magnitude nova in Vulpecula. The AAVSO seeks your observations.

Solar System

Comet Discoverers Awarded

This year's Edgar Wilson Award went to three unique amateur comet discoverers.

Pro-Am Collaboration

A Ringside View of Uranus

Astronomers have assembled an armada of telescopes to observe Uranus in a way that hasn't been possible since the 1960s.

Pro-Am Collaboration

Spectacular Occultation and Graze of Regulus

The year's best grazing occultation in North America occurs on June 19-20, 2007, when the waxing crescent Moon covers Regulus (Alpha Leonis).

Pro-Am Collaboration

Occultations by Possible Rings of Pluto

Photometric recordings of Pluto passing near stars, as on the night of May 11-12, 2007, could reveal if it has a ring system.

Pro-Am Collaboration

Outburst of the Eta Aquarids?

A very old dust trail from Halley's Comet could enhance this meteor shower on May 6, 2007.

Pro-Am Collaboration

A Bright Naked-Eye Asteroid Occultation

On Tuesday evening, April 17, 2007, observers in Georgia and Florida will get a chance to watch asteroid 411 Xanthe cover the 4.2-magnitude star Iota Cancri.

Pro-Am Collaboration

Call for Observations of X-ray Binaries and CVs

From late April through mid-May 2007, professionals are seeking amateur observations of four X-ray binaries and a cataclysmic variable star.

Pro-Am Collaboration

New Manual for Occultation Observers

The International Occultation Timing Association (IOTA) announced on April 3, 2007, the release of a free e-book, Chasing the Shadow: The IOTA Occultation Observer's Manual.

Pro-Am Collaboration

New Disturbance in Jupiter's North Temperate Belt

On March 29, 2007, two new white spots appeared on Jupiter. Keep watch as they develop over the coming weeks.

Pro-Am Collaboration

New Comet in Indus

After a two-year search, on March 15, 2007, Australian amateur Terry Lovejoy found his first comet.

Pro-Am Collaboration

Update on March 18th's Occultation of a Star by Pluto

The countdown has begun for this important occultation of a 15th-magnitude star by Pluto, due to occur on Sunday morning, March 18, 2007.

Pro-Am Collaboration

Best Pluto Occultation Ever Predicted for North America on March 18th

The best occultation of a star by Pluto ever predicted for North America will occur between 10:40 and 11:00 Universal Time on Sunday morning, March 18, 2007.