Howard Astronomical League - Meetings
All HAL Meetings (and star parties) are held in locations which are smoke free by law. Help us protect our ability to use these facilities by not smoking. Thanks.
Specific dates for the meetings below can be found on the HAL Calendar page. Additional information is communicated near the event in the HAL e-mail group.
HAL General Meetings (Open to the Public)
This Year's Meeting Topics / Speakers
- HAL's monthly meetings are
held at 7:00PM on the 3rd Thursday of every month at:
The Robinson Nature Center (Map)
6692 Cedar Lane
Columbia, MD 21044
Click here for more information on this great new facility: Robinson Nature Center
HAL Planning Meetings (Open to
- Monthly Planning meetings to discuss future club direction, events, meeting
topics, outreach, etc. are open to all members. Attendance is
encouraged. These are held from 7:00-8:00PM on the first Monday of most months* at:
Wegman's Market 2nd Floor Dining Area (Map)
8855 McGaw Rd
Columbia, MD 21045
* Sometimes the Planning Meeting date falls on a holiday in which case the meetiings could be either cancelled or rescheduled. '
Occasionally, the meetings get
cancelled due to lack of agenda items. Therefore, check the calendar page, the top of the home page, and/or
posting on the e-mail group to be sure a specific
meeting will be held.
2017 General Meeting Topics / Speakers
||HAL Annual Election & astrophotos, Wayne Baggett provides an update on the James Webb Space Telescope|
Annual treasurer's report & members astrophotos plus special guest speaker.
Speaker: NASA Astrophysicist, Dr. Ira Thorpe
Title: The 100 Year History of Gravity Waves, and the LISA/LISA Pathfinder Missions
Abstract: In September 2015, nearly a century after Albert Einstein’s publication of the theory of General Relativity, the Laser Interferometer Gravitational-wave Observatory (LIGO) instruments detected gravitational waves produced by colliding black holes in the distant universe. While that feat marked the end of a nearly six-decade quest to make the first direct detection of gravitational waves, it marks the beginning of a new an exciting field of astronomy that will use gravity, not light, to explore and understand our universe and the strange phenomena that inhabit it. Just as electromagnetic astronomers have developed a suite of instruments to cover a wide range of that spectrum, gravitational wave astronomers are developing instruments that are sensitive to different frequencies of gravitational waves. One of the most promising bands, expected to be rich in both number and variety of sources, is the milliHertz band, which is only accessible to a space-based observatory.
In 2015, the European Space Agency launched LISA Pathfinder, a technology demonstrator for the Laser Interferometer Space Antenna (LISA) concept. LISA Pathfinder’s primary objective is to demonstrate that a test mass can be placed in near-perfect free-fall and that it’s acceleration can be precisely measured using a laser interferometer. In this talk Dr. Thorpe will describe LISA Pathfinder, its key technologies, NASA’s role, and the preliminary results to date. He will also provide a look forward to the prospects for realizing LISA and the tremendous science output that it will achieve.
||Speaker: Elizabeth Warner gives a talk entitled: "Education, Public Outreach and Research at a Small Observatory". The UMD Observatory was dedicated in 1964 and was established as a teaching facility. A public program was added and those Open Houses continue today. While maintaining the existing educational and public outreach portions, Elizabeth Warner has also established new outreach initiatives since taking over in May 2002. A challenge from a student and a change in the program she mentored led to starting a research program with undergrad students.
||Dr. Adam Szabo, Chief of NASA Goddard Space Flight Center's Heliospheric Phyics Labratory, will be speaking to us about the Earth and Solar Wind Science Observations of the DSCOVR Mission.
In addition to the recurring meeting elements, the talk for May is:
Exoplanet Detection via Microlensing
by Dennis M. Conti
Chair, AAVSO Exoplanet Section
Microlensing is one of several techniques used by astronomers to detect and characterize exoplanets, as well as double star systems. Microlensing is possible due to the warping of spacetime, as predicted by Einstein’s General Theory of Relativity. One of the advantages of microlensing over other detection techniques, such as the transit method, is that microlensing can detect the existence of earth-size planets. However, the rarity and small time scale with which microlensing events occur presents its own challenges.
This presentation will review how microlensing takes place and the light curves produced by microlensing events. The observation with a backyard telescope of an actual microlensing event will be discussed, as well as how amateur astronomers can contribute to such events.
||Member's solar eclipse reports and photos
2013 Meetings - Speakers and Topics
2014 Meetings - Speakers and Topics
2015 Meetings - Speakers and Topics
2016 Meetings - Speakers and Topics