Information For:
  Astronomers
  Teachers & Students

Useful Links:
  Very Large Array (VLA)
  VLA Expansion Project (EVLA)
  Press Releases
  Image Gallery
  Frequently Asked Questions
  EPO newsletters
  Assistant Director's Page (VLA)

VLBA Antenna Memos

Memo Title Author Date Size
    77 Kitt Peak, Arizona VLBA Maintenance Visit, April 27 - May 7, 2009 E. Carlowe May 28, 2009           773k
    76 St. Croix VLBA Antenna Painting and Surface Preparation J. Thunborg March 31, 2009           666k
    75 St. Croix Maintenance Trip Report,  October 27 - Nov. 14, 2008 J. Thunborg December, 2008
718k
74 Owens Valley, California VLBA Maintenance Visit, August 18-25, 2008(pdf) E. Carlowe September, 2008 811k
73 North Liberty, Iowa VLBA Maintenance Visit, April 30 - May 7, 2008(pdf) E. Carlowe April, 2008 969k
72 Saint Croix, VI VLBA Electronics Maintenance Visit, March 11-20, 2008(pdf) E. Carlowe March, 2008 3346k
71 Brewster Washington VLBA Maintenance Visit, July 24-31, 2007(pdf) E. Carlowe August 2007 848k
70 Fort Davis Bearing Replacement-Trip Report(pdf) J. Thunborg February 27, 2008 146k
69 Fort Davis Maintenance Visit, May 1-8, 2007(pdf) E. Carlowe June 14, 2007 736k
68 St. Croix VLBA Antenna Painting and Surface Preparation Requirements(pdf) J. Thunborg May 8, 2007 650k
67 Fort Davis - Drive #1 Wheel/Bearing Assembly Replacement January 3-6, 2007 Trip Report(pdf) J. Thunborg January 10, 2007 33k
66 Hancock, NH Maintenance Visit, Sept. 20-27,2006(pdf)
Tasklists(pdf) 		E. Carlowe November 10, 2006 1196k
65 Mauna Kea Drive #1 Wheel/Bearing Replacement - July 19 - August 6, 2006(pdf) E. Carlowe September 1, 2006 121k
64 Mauna Kea Maintenance Visit - July 19-Aug 6, 2006(pdf)
Tasklists(pdf) 		E. Carlowe August 31, 2006 1167k
63 Kitt Peak Maintenance Visit - May 16-22, 2006(pdf)
Tasklists(pdf) 		E. Carlowe June 27, 2006 1,111k
62 St. Croix Corrosion Report(pdf) J. Thunborg March 3, 2006 499k
61 North Liberty Maintenance Visit, September 20-27, 2005(pdf)
Tasklists(pdf) 		E.Carlowe November 21, 2005 1309k
60 Los Alamos Maintenance Visit, July 28 thru August 3, 2005(pdf)
Tasklists(pdf) 		E. Carlowe August 30, 2005 1234k
59 St. Croix Maintenance Visist, April 4 thru April 22, 2005(pdf)
Tasklists(pdf) 		E. Carlowe July 25, 2005 1104k
58 Owens Valley Drive Wheel #2 Replacement, February 14 - 17, 2005 Trip Report(pdf) R. Gutierrez March 2, 2005 50k
57 Owens Valley, CA Maintenance Visit Sept. 23- Oct. 1, 2004(pdf)
Tasklists(pdf) 		E. Carlowe October 15, 2004 895k
56 Brewster, WA VLBA Maintenance Visit July 28-August 8, 2004(pdf)
Tasklists(pdf) 		E. Carlowe August 23, 2004 894k
55 Fort Davis, Texas Maintenance Visit June 10-18, 2004(pdf)
Tasklists(pdf) 		E. Carlowe July 21, 2004 994k
54 Mauna Kea Rail Repair(pdf) J. Thunborg August 13, 2004 91k
53 Pie Town Rail Repair(pdf) J. Thunborg July 8, 2004 65k
52 Pie Town Drive #1 Wheel/Bearing Replacement May 14-18, 2004(pdf) E. Carlowe 2004 May 170k
51 North Liberty, Iowa VLBA Maintenance Visit September 10-16, 2003(pdf)
Task List(pdf) 		E. Carlowe 2003 December 1558k
50 North Liberty Drive #2 wheel/bearing replacement (pdf) J. Thunborg 2003 November 45k
49 Recommended Strategy for VLBA Elevation Bearing Replacement(pdf) M. McKinnon, J.Thunborg, J. Ruff 2003 October 10k
48 St. Croix Elevation Bearing Replacement - Trip Report, September 10, 2003(pdf) J.E. Thunborg 2003 September 192k
47 Kitt Peak, Arizona VLBA Maintenance Visit June 5-12, 2003(pdf)
Task List (.doc)
 E. Carlowe 2003 August 1930k
46 St. Croix, Virgin Islands Maintenance Visit March 15-25
 E. Carlowe 2003 May 13 1656k
45 Mauna Kea Maintenance Visit
August 2002		 J. Ruff 2002 September 30 1mb
44 Los Alamos Rail Repair
August 2002		 J.E. Thunborg 2002 August 21 46k
43 Lightning Protection at
VLBA Pie Town
August 2002		 B. Broilo,
P. Rhodes,
C. Janes		 2002 August 6 11k
42 Los Alamos Az Drive #1
July 2nd and 3rd, 2002		 J. Ruff 2002 July 8 79k
41 Hancock Maintenance Visit
June 3 through 10, 2002		 J. Ruff 2002 June 25 927k
40 St. Croix Maintenance Visit
April 8 through 25, 2002		 J. Ruff 2002 June 24 1.2M
39 Los Alamos--Drive #1 --Axle Repair, June 18-19, 2002 J. E. Thunborg 2002 July 11 147k
38 North Liberty Rail Repair J. E. Thunborg 2002 June 14 392k
37 Owens Valley Gearbox Repair J. Thunborg 2002 April 26 351k
36 Pie Town Maintenance Visit 2001 J. Ruff 2002 January 04 653k
35 VLBA Subreflector Measurement and Repair (pdf) J. Thunborg 2001 August 22 145k
34 Brewster Maintenance Visit July 23-30, 2001 J. Ruff 2001 August 2 733k
33 Owens Valley Maintenance Visit June 11-17, 2001 (pdf) J. Ruff 2001 July 10 139k
32 Los Alamos Maintenance Visit April 17-23, 2001 (pdf) J. Ruff 2001 May 1 102k
31 Conversion from analog to digital tachometer D. Whiton 2000 December
30 VLBA Azimuth Axle Failure - Follow up J. Thunborg 2001 March
29 Los Alamos Elevation Bearing Replacement J. Ruff 2001 January
28 Los Alamos Drive #2 Wheel Replacement
 J. Ruff 2000 December 19  
27 Fort Davis Maintenance Visit August 14-19, 2000 (pdf)
 J. Ruff 2000 August 22 570k
26 Kitt Peak Maintenance Visit July 10-16, 2000 (pdf)
 J. Ruff 2000 August 7 583k
25 North Liberty Maintenance Visit April 14-19, 2000 (pdf)
 J. Ruff 2000 May 17 628k
24 St. Croix Maintenance Visit, January 15-20, 2000 J. Thunborg 2000 January
23 Brewster, Washington - Wheel/Axle Repair, Oct. 21-23, 1999 Trip Report J. Thunborg 1999 October
22 Hancock, New Hampshire-Maintenance Visit, June 22-28, 1999 Trip Report J. Thunborg 1999 September
21 Leica Geosystems Equipment Demo J. Thunborg 1999 August
20 St. Croix Corrosion Report J. Thunborg 1999 August
19 Fall Protection for Inclined Ladders J. Ruff 1999 July
18 St. Croix Maintenance Visit, June 22-28, 1999 Trip Report J. Thunborg 1999 July
17 VLBA Panel Repair R. Gutierrez, J. Thunbord, J. Wall 1999 April
16 Mauna Kea Maintenance Visit, March 22-27, 1999 Trip Report J. Thunborg 1999 April
15 Trip Report: Wheel Changing in the Garden of Eden J. Ruff 1998 October 5  
14 Brewster Maintenance Visit, August 17-22, 1998 Trip Report J. Thunborg September 1998  
13 Measurement of VLBA Counterweight Imbalance J. Thunborg September 1998  
12 Brewster, WA VLBA Site Azimuth Rail Maintenance B. Broilo August 1998  
11 Los Alamos Maintenance Visit Trip Report July 13-17, 1998 J. Thunborg July 1998  
10 Trip Report - North Liberty C. Janes May 1998  
9 Trip Report - Kitt Peak Bearing Lev G. Stanzione May 1998  
8 Brewster, WA VLBA Site Azimuth Rail Inspection Feb. 19 B. Broilo February 1998  
7 Los Alamos, NM VLBA Site Azimuth Rail Inspection Feb. 19 B. Broilo April 1998  
6 Owens Valley Maintenance Visit April 20-25, 1998 Trip Report J. Thunborg May 1998  
5 VLBA Antenna Hard Stops J. Thunborg April 1983  
4 Drive Design-VLBA Antennas B. Horne November 1983  
3 Setting the VLBA Antennas B. Horne November 1983  
2 TIW Antenna Panels T. Legg September 1983  
1 VLBA Antenna Choice B. Horne October 1983  
Modified onThursday, 28-May-2009 10:22:44 MDT