| The Portland IV 
				Annual Alt-Az Initiative Workshop will be held on Saturday and 
				Sunday at Dan Gray's Sidereal Technology plant, preceded by an 
				informal BBQ on Friday evening, July 30.  Last years Portland 
				III Workshop featured a wide variety of speakers, and was 
				featured in Amateur Astronomy magazine as will be this 
				years workshop.  Topics this year will include lightweight 
				mirrors, large alt-az telescopes, advanced control systems, 
				instruments (including near IR aperture photometers), and other 
				topics.  Howard Banich is chairing the workshop, and Dan Gray is 
				the local host.  If you plan on attending, please contact Howard 
				at
				
				howard.banich@nike.com.  See
				
				www.AltAzInitiative.org for the latest information on the 
				workshop.
 
				
				A nearby hotel is 
				
				Monticello Motel Station, 4801 North Interstate Avenue <http://maps.google.com/> 
				Portland, OR 97217-3623 <http://maps.google.com/>. 
				
				
				To get 
				to the Technical Marine Service, Inc. on Swan Island: 
				  
				
				From I-5 northbound (or southbound also) take exit 303 (Swan 
				Island exit) and head west after  you get off the freeway. From the northbound direction, this means 
				staying to your left and
 heading west on North Going Street.
 
				
				  Follow this past Interstate Ave. and go down the hill 
				towards Swan Island.  
				
				·        
				
				
				Get in the right hand lane and at the bottom of the hill follow 
				the signs to Mocks Landing and veer to the right onto Basin Ave.
 
				
				  Go about 1.5 miles to the signal light at Leverman and 
				turn right and go over the bridge to the first street on the right, which is N. Cutter Circle.
 
				
				  Turn right on North Cutter Circle and go to the end of 
				the block to 6040 North Cutter Circle. 
				               
				
				
				TMS is in the first building as you turn in the driveway 
				(there's a big "TMS" on the side of the   building. Parking and entry for the workshop is at the side of 
				the building.
 
				
				                                                                     
				Agenda 
				
				
				(Some of the topics, talks, and discussion areasmore will be 
				added)
 
				
				Friday, 7/30 (6pm) 
				
				Welcome BBQ at TMS  
				
				Saturday 7/31 (8:30am)  
				
				Introduction and agenda review  
				
				Howard
				Whats the telescope for?  
				
				Richard, 
				
				Russ
 Research opportunities  
				
				Richard, Jo, David, Russ,
				
				
				Gary Cole. Bob Nelson, David Haworth, Bruce:
 Occultations (Lunar and asteroid)
 
				
				Break  
				
				Light Bucket astronomy  
				
				Bruce: 
				
				Light Bucket Mirrors,
				
				
				some 
				light bucket mirror theory (figures of merit overview),
				
				
				Pneumatic LBTs, Evaluation of other new types and coatings
 (Starstone, solar, Peacock Labs).
				
				
				Russ
 Visual observing - 
				
				Howard
 
				
				Lunch 
				
				Brief history of the alt-az telescope  
				
				Richard, Peter Abrahams Herschel and Lord Rosse  
				
				Richard
 
				
				Break  
				
				Mirror technologies  
				
				Mel, David, Drew, Peter Chen, Bruce, Umesh and Brian 
				
				Active primary and secondary optics 
				
				 
				
				Umesh:
 Closed loop control of membrane mirrors using electrostatic 
				actuators, Brian:
 Laboratory experiments on electrostatically controlled membrane 
				mirrors, Bruce:
 Correctors Lenses, Deformable Secondary. 
				
				Greg
 Spherical aberration correction via spherical refractive 
				elements - 
				
				Dave
 
				
				Dinner
				 
				
				Sunday, 8/1 (9:00am) 
				
				Direct drive motor and controller  
				
				Dan, Dave and the PlaneWave gang Instrumentation  
				
				Greg, Dan, 
				Bruce: 
				
				Fast Detectors, Area (CCD & CMOS) and diaphragm (high speed
 electrometer design)
 
				
				Break  
				
				Update on Russ Genets 1 meter scope  
				
				Russ Professional alt-az updates  
				
				PlaneWave, Craig
 
				
				 Lunch 
				
				 CDK700 - Dave1 meter CDK Cassegrain  
				
				Dave
 Future plans - what scopes and instruments are being planned by 
				participants?
 
				
				Break 
				
				 Large 
				Telescope Portability - 
				
				HowardSPIE update  
				
				Russ
 Wrap up, going forward  
				
				Howard, Russ
 
 |