images/content_background.jpg volume6/number2/Picture1.png volume6/number2/Picture2.png The binary ζ Aquarii and its orbit. See the article by Rainer Anton beginning on page 133. Another Caption - Not used this time 6 2 April 1, 2010 volume6/number2/Spring2010final.pdf

volume6/number2/Bertoglio_116_132.pdf Alessandro Bertoglio 116

volume6/number2/Anton_133_140.pdf Rainer Anton 133

volume6/number2/Arnold_141_146.pdf Dave Arnold 141

volume6/number2/George_147_149.pdf Tony George and Alan Whitman 147

volume6/number2/Herald_150_151.pdf Dave Herald, Brian Loader, Stuart Parker 150

volume6/number2/Herald_152-153.pdf Dave Herald, M. Kashiwagura, Brian Loader, Steve Messner, Robert Sandy, H. Togashi 152

volume6/number2/Schlimmer_154_155.pdf Joerg S. Schlimmer 154

volume6/number2/RicaRomero_156_159.pdf Francisco Rica Romero 156

volume6/number2/Caballero_160_167.pdf Rafael Caballero 160

volume6/number1/NO_IMAGE_THIS_TIME.jpg The appeal of observing double stars is the fun of measuring a difficult or long-neglected pair, and the fact that your data become part of a progression of measurements spanning over two centuries - data that may be combined with measures made long before you were born and used by someone long after you're gone. William I. Hartkopf 6 1 January 1, 2010 volume6/number1/Winter2010c.pdf

volume6/number1/Frey.pdf Thomas G. Frey and Angie M. Frey 2

volume6/number1/Arnold20.pdf Dave Arnold 5

volume6/number1/Smith.pdf Frank Smith 12

volume6/number1/Williams.pdf Stephen J. Williams, John W. Wilson, Melissa Hursey, and Saida M. Caballero-Nieves 15

volume6/number1/Berko.pdf Ernő Berkó 21

volume6/number1/Benavides.pdf Rafael Benavides, Francisco Rica, Esteban Reina, Julio Castellanos, Ramón Naves, Luis Lahuerta, Salvador Lahuerta 30

volume6/number1/herald.pdf Dave Herald, Robert Boyle, David Dunham, Toshio Hirose, Paul Maley, and Bradley Timerson, Tim Farris, Eric Frappa, Jean Lecacheux, Tsutomu Hayamizu, Marek Kozubal, Richard Nolthenius, Lewis C. Roberts, Jr., David Tholen 88

volume6/number1/Caballero.pdf Rafael Caballero 97

volume5/number4/coverpic.jpg This figure is a light curve of SAO 97883 during a grazing lunar occultation and indicates that the star is binary. See the article by Herald and Sandy on page 208. 5 4 October 1, 2009 volume5/number4/Fall2009d.pdf

volume5/number4/Arnold19.pdf Dave Arnold 182

volume5/number4/berko.pdf Ernő Berkó 189

volume5/number4/Jones.pdf James L. Jones 204

volume5/number4/Vollmann.pdf Wolfgang Vollmann 207

volume5/number4/Herald.pdf Dave Herald and Robert Sandy 208

volume5/number4/Ferrero.pdf Laurent Ferrero 211

volume5/number4/Frey.pdf Thomas Frey, Holly Bensel, Robert Bensel, Fred Muller, Ryan Gasik, Monika Ruppe, Dave Scimeca, Jolyon Johnson, and Danyal Medley 212

volume5/number4/Muller.pdf R. J. Muller, J.C. Cersosimo, V. Miranda, D. Centeno, L. Rivera-Rivera, E. Franco, K. Ramos, K. Morales, and V. Maldonado 217

volume5/number3/Picture1.jpg volume5/number3/Picture2.jpg Composite image of a possible new cpm binary showing the movement of the pair between 1954 (green) and 1990 (red). See "Finding New Common Proper Motion Binaries by Data Mining" by R. Caballero, pg 156. Image of Sirius B taken by James Daley using his stellar coronograph to obscure Sirius A. See "Ludwig Schupmann Observatory Measures of Large Dm Pairs", page 149. 5 3 Summer 2009 volume5/number3/Summer09C.pdf

volume5/number3/Arnold18.pdf Dave Arnold 129

volume5/number3/Smith.pdf Frank Smith 135

volume5/number3/Lopez.pdf Ángel Manuel López 141

volume5/number3/Daley.pdf James A. Daley 149

volume5/number3/Caballero2.pdf Rafael Caballero 156

volume5/number3/berko3.pdf Ernö Berkó 168

volume5/number3/berkosei.pdf Ernö Berkó and György Vaskúti 177

volume5/number2/coverpic.jpg Cancelled Flagstaff Visual Double Star Workshop Saturday and Sunday, May 30-31, 2009 has been cancelled. We regret any inconvenience. 5 2 Spring 2009 volume5/number2/Spring09G.pdf

volume5/number2/Johnson.pdf Matthew J. Dowdy, Annelisa F. Green, Nathan B. Heaston, Clifford T. Mathieson, Brittany Powell, Erick E. Vega, Bohdi R. Hodges, Megan A. Hoffman, Thomas G. Frey, Jolyon M. Johnson, David Arnold, Russell M. Genet, and Logan S. Hodges 74

volume5/number2/Rica.pdf Francisco Rica Romero 78

volume5/number2/Arnold17.pdf Dave Arnold 94

volume5/number2/Schlimmer.pdf Joerg S. Schlimmer 102

volume5/number2/Schlimmer2.pdf Joerg S. Schlimmer 112

volume5/number2/Wiley.pdf E.O. Wiley 119

#

volume5/number1/coverpic.jpg Image from "On the Accuracy of Double Star Measurements from "Lucky" Images ..." by Rainer Anton. on page 65 ff. 5 1 Winter 2009 volume5/number1/Winter09B.pdf

volume5/number1/Arnold16.pdf Dave Arnold 2

volume5/number1/Schlimmer.pdf Joerg S. Schlimmer 10

volume5/number1/Masa.pdf Edgardo Rubén Masa Martín 18

volume5/number1/Benavides.pdf Rafael Benavides Palencia 43

volume5/number1/Berko.pdf Ernõ Berkó 49

volume5/number1/Johnson.pdf Pablo Alvarez, Amos E. Fishbein, Michael W. Hyland, Cheyne L. Kight, Hairold Lopez, Tanya Navarro, Carlos A. Rosas, Aubrey E. Schachter, Molly A. Summers, Eric D. Weise, Megan A. Hoffman, Robert C. Mires, Jolyon M. Johnson, Russell M. Genet, and Robin White 60

volume5/number1/anton.pdf Rainer Anton 65

4 4 Fall 2008 volume4/number4/Fall08f.pdf

volume4/number4/Vollman.pdf Wolfgang Vollmann 128

volume4/number4/Arnold.pdf Dave Arnold 136

volume4/number4/Berko.pdf Ernõ Berkó 144

volume4/number4/Napier_Munn.pdf Tim Napier-Munn 156

volume4/number4/Caballero.pdf Rafael Caballero 164

volume4/number4/VanderHaagen.pdf Gary A. Vander Haagen 168

volume4/number4/Muller.pdf R. J. Muller, J.C. Cersosimo, V. Miranda, C. Martinez, D. Centeno, L. Rivera, E. Franco, K. Ramos, K. Morales 170

volume4/number4/Daley.pdf James A. Daley 175

volume4/number3/coverpic.jpg This image is from Roberto Caloi’s article on using a web cam to do speckle interferometry. See page 111 for details. 4 3 Summer 2008 volume4/number3/Summer08c.pdf

volume4/number3/arnold.pdf Dave Arnold 91

volume4/number3/muller.pdf R.J. Muller, J.C. Cersosimo, D.Centeno, V. Miranda, L. Rivera-Rivera, E. Franco, K. Morales 100

volume4/number3/Buchheim.pdf Robert K. Buchheim 103

volume4/number3/caloi.pdf Roberto Maria Caloi 111

volume4/number3/Wiley.pdf E. O. Wiley 119

4 2 Spring 2008 volume4/number2/Spring08g.pdf

volume4/number2/Daley_34_39.pdf James A. Daley 34

volume4/number2/Anton_40_51.pdf Rainer Anton 40

volume4/number2/Johnson_52_55.pdf Jolyon Johnson, Thomas Frey, Sydney Rhoades, James Carlisle, George Alers, Russell Genet, Zephan Atkins, and Matt Nasser 52

volume4/number2/Schlimmer_56_58.pdf Joerg S. Schlimmer 56

volume4/number2/Frey_59_65.pdf Thomas G. Frey 59

volume4/number2/Arnold_66_73.pdf Dave Arnold 66

volume4/number2/Vollmann_74_77.pdf Wolfgang Vollmann 74

volume4/number2/Koch_78_80.pdf Bob Koch 78

volume4/number2/Schlimmer_81_83.pdf Joerg S. Schlimmer 81

volume4/number2/Spangle_84_88.pdf Morgan Spangle 84

volume4/number1/coverpic.jpg This issue we have articles from professional, advanced amateur, and beginning amateur astronomers. The accomplishments from the beginning amateurs, though more modest, are no less noteworthy because they have the ambition to strike out in a new direction. Sometimes beginning something new can be difficult. Kudos also to the pros and experienced observers who take the time to assist new observers and bring them to the interesting world of double star astronomy. The picture at left is of Mr. Grisham and his 3” Tasco; see the article beginning on page 10. We note that this issue begins volume 4 and completes our third year of publishing the JDSO. We want to thank all of you who take the time to read this e-journal. We’re especially grateful to all who have contributed articles. It wouldn’t happen without you. The Editors 4 1 Winter 2008 volume4/number1/Winter08e.pdf

volume4/number1/Arnold_2_9.pdf Dave Arnold 2

volume4/number1/Grisham_10_13.pdf Darrell R. Grisham, Jolyon M. Johnson, Russell M. Genet, and David L. Arnold 10

volume4/number1/Wiley_14_19.pdf E. O. Wiley 14

volume4/number1/Jones_20_23.pdf James L. Jones 20

volume4/number1/Marble_24_26.pdf Stephanie M. Marble, Christianne M. Gonzalez, Corey M. Cameron, et al. 24

volume4/number1/Buchheim_27_31.pdf Robert K. Buchheim 27

volume3/number4/figure.jpg In the Spring 2006 issue, Jim Daley had an article describing his successful search for the C & D companions of Polaris. His images of the dim companions got the attention of professional astronomers. In this issue, Mr. Daley tells us about how he has improved on the technique he used and describes it in some detail so that others can try it out. 3 4 Fall 2007 volume3/number4/Fall07.pdf

volume3/number4/Arnold11.pdf Dave Arnold 139

volume3/number4/johnson.pdf Johnson, Jolyon M. and Genet, Russell M. 147

volume3/number4/Schlimmer.pdf Schlimmer, J.S. 151

volume3/number4/Daley.pdf Daley, James A. 159

volume3/number3/binarystarsbook.jpg Don't miss Ed Wiley's review of the classic book, The Binary Stars, by Robert Aitken. It starts on page 135. 3 3 Summer 2007 volume3/number3/Summer07.pdf

volume3/number3/Wiley_meas.pdf Wiley, E.O. 108

volume3/number3/Arnold10.pdf Arnold, Dave 119

volume3/number3/Bertoglio.pdf Bertoglio, Alessandro 128

volume3/number3/Schlimmer.pdf Schlimmer, Joerg 131

volume3/number3/Wiley_review.pdf Wiley, E.O. 135

volume3/number2/05beam_small.JPG We have lots of measurements in this issue of the JDSO. Over 800 of them as many hard-working double star astronomers have sent in annual reports. Don't miss Jim Daley's article on our old friend Mizar, beginning on the next page. The photograph at right is of the beam interferometer used to achieve the first separation of Mizar, designated PEA Aa in the WDS. (photo courtesy of B. Mason) 3 2 Spring 2007 volume3/number2/Spring2007.pdf

volume3/number2/Daley1.pdf Daley, Jim 51

volume3/number2/Arnold9.pdf Arnold, Dave 55

volume3/number2/Wiley.pdf Wiley, E. O. 62

volume3/number2/Daley2.pdf Daley, James A. 68

volume3/number2/Muller.pdf Muller, Rafael J., et. al. 77

volume3/number2/Ashcraft.pdf Ashcraft, Clif 82

volume3/number2/Spangle.pdf Spangle, Morgan 91

volume3/number2/Rica.pdf Romero, Francisco Rica 99

volume3/number1/coverpic.jpg Report from Prague - Last summer's IAU meeting in Prague got a lot of attention in the popular media because of the decision to demote Pluto. Of course, there was a lot more astronomy than just arguing about Pluto's status. In this issue, Bob Argyle gives us a a review of the many double star activities reported on at the meeting. He tells us that the level of participation was very high, indicating an increased importance put on double star research. Read his complete report beginning on page 2. 3 1 Winter 2007 volume3/number1/Winter07D_update.pdf

volume3/number1/Argyle_update.pdf Argyle, Bob 2

volume3/number1/Soon.pdf Soon, Andrew M. 6

volume3/number1/Hennig.pdf Hennig, Darren Lewis 9

volume3/number1/Muller.pdf Muller, Rafael J., et. al. 11

volume3/number1/Hitchcock.pdf Hitchcock, Ed 17

volume3/number1/Rica_update.pdf Romero, Francisco Rica 21

volume3/number1/Arnold.pdf Arnold, Dave 27

volume3/number1/Masa.pdf Martín, Edgardo Rubén Masa 34

volume2/number4/wds_fig1.jpg The United States Naval Observatory has released a new compact disc containing the Washington Double Star Catalog, The Sixth Catalog of Orbits of Visual Binary Stars, and other major double star catalogs. See Mason and Hartkopfs article on page 171 for a full description. 2 4 Fall 2006 volume2/number4/Fall2006.pdf

volume2/number4/Daley3.pdf Daley, James A. 134

volume2/number4/Muller1.pdf Muller, R.J., et. al 138

volume2/number4/Rica1.pdf Romero, Francisco Rica 142

volume2/number4/Wiley1.pdf Wiley, E. O. 145

volume2/number4/Spangle1.pdf Spangle, Morgan 154

volume2/number4/Soon1.pdf Soon, Andrew M. 157

volume2/number4/Arnold7.pdf Arnold, Dave 163

volume2/number4/Mason_Hartkopf1.pdf Mason, Brian D. and Hartkopf, William I. 171

volume2/number4/Review_Argyle.pdf Arnold, Dave 177

volume2/number3/ c 2 3 Summer 2006 volume2/number3/Summer2006.pdf

volume2/number3/Arnold5.pdf Arnold, Dave 79

volume2/number3/Arnold6.pdf Arnold, Dave 87

volume2/number3/VarleyNicholson1.pdf Varley, H. and Nicholson, M. 95

volume2/number3/Nicholson1.pdf Nicholson, Martin P. 97

volume2/number3/Mollise2.pdf Mollise, Rod 100

volume2/number3/Anton1.pdf Anton, Rainer 108

volume2/number3/Romero2.pdf Romero, Francisco Rica 118

volume2/number2/ c 2 2 Spring 2006 volume2/number2/Spring2006.pdf

volume2/number2/Daley1_correction.pdf Daley, James A. 44

volume2/number2/Daley2.pdf Daley, James A. 51

volume2/number2/Arnold1.pdf Arnold, Dave 54

volume2/number2/Arnold2.pdf Arnold, Dave 61

volume2/number2/Nicholson.pdf Nicholson, Martin P. 68

volume2/number2/Vollman.pdf Vollman, Wolfgang 74

volume2/number1/ c 2 1 Winter 2006 volume2/number1/Winter2006.pdf

volume2/number1/Romero1.pdf Romero, Francisco Rica 2

volume2/number1/Greaves1.pdf Greaves, John 4

volume2/number1/Arnold1.pdf Arnold, Dave 6

volume2/number1/Arnold2.pdf Arnold, Dave 13

volume2/number1/Mason1.pdf Mason, Brian 21

volume2/number1/Romero2.pdf Romero, Francisco Rica 36

volume1/number3/ c 1 3 Fall 2005 volume1/number3/Fall2005.pdf

volume1/number3/Daley1.pdf Daley, James A. 65

volume1/number3/Daley2.pdf Daley, James A. 74

volume1/number3/Mollise1.pdf Mollise, Rod 81

volume1/number3/Romero1.pdf Romero, Francisco M. Rica 88

volume1/number3/Burling1.pdf Burling, William J. 92

volume1/number2/ c 1 2 Summer 2005 volume1/number2/Summer2005.pdf

volume1/number2/Romero1.pdf Romero, Francisco M. Rica 24

volume1/number2/Shuart1.pdf Shuart, Ross 33

volume1/number2/Greaves1.pdf Greaves, John 41

volume1/number2/Clark1.pdf Clark, R. Kent, et. al. 44

volume1/number2/Martin1.pdf Martin, Edgardo Ruben Masa 49

volume1/number2/Mason1.pdf Mason, Brian D. 57

volume1/number1/ c 1 1 Spring 2005 volume1/number1/Spring2005.pdf

volume1/number1/Jones1.pdf Jones, James L. 2

volume1/number1/Romero1.pdf Romero, Francisco M. Rica 6

volume1/number1/Romero2.pdf Romero, Francisco M. Rica 8

volume1/number1/Martin1.pdf Martin, Edgardo Ruben Masa 11

volume1/number1/Ryan1.pdf Ryan, John M. 19