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    EURONEAR - Tools - MASDS

Description: MASDS is the acronym for "Mega Archive Search of Double Stars".
It searches for double stars from the Washington Double Star (WDS) catalog in the Mega Archive (15 million images by Mar 2018).
Input: Object WDSID name or the WDS Discoverer code.
Output: List of images possible to hold the double star(s), including: name of the archieve/instrument, image ID, observing date/time (start), exposure time (s), some magnitude limit for the telescope/instrument, filter (plus eventually other comments from observer) and the distance between the object and the camera center (in degrees) with a percentage score.
Optional: The exact position of the double star(s) can be overlaid in the camera field by pushing the button "Position in CCD field".
Warning: Only a part of the fields are suported right now by this tool. The supported instruments (Mega-Archive) are growing continuously.


Current archieve info:

Searched object(s):
Please enter WDSID (ex: 13276+0655) or WDS Discoverer code (ex: STF 2727).
Searching for two or more objects is also possible, please separate them in a few lines.

   


Raw text output
Chose raw output mode to receive a CSV style output. Otherwise, a HTML table output will be produced.

Safety search border (deg):
The size in degrees of a band around the images to accommodate posible pointing errors.

Instrument Selection:
Instrument
AΩA (sq.m × sq.deg × nr.img)
FOV (sq.')
Start Date
End Date
Images
ALL Instruments
AAT-WFI
14831
1089.0
2000-08-21
2006-02-05
4453
CADC/APASS
42242
31329.0
2010-04-11
2014-06-02
121350
CADC/CFHT-aobir
184
1.4
1997-12-10
2011-11-23
45108
CADC/CFHT-aobvis
6
1.4
1996-05-04
1999-03-30
1573
CADC/CFHT-CFHTIR
1396
17.6
2001-01-10
2005-11-17
27996
CADC/CFHT-Megacam
3152196
3600.0
2003-02-22
2025-07-29
309646
CADC/CFHT-MOCAM
421
225.0
1995-05-28
1995-11-29
662
CADC/CFHT-REDEYE
241
4.4
1993-02-04
1998-09-03
19312
CADC/CFHT-WIRCam
499982
466.6
2005-11-18
2025-06-17
378967
CADC/CTIO-CPAPIR
37513
348.2
2005-02-13
2025-05-13
219497
CADC/CTIO-CPAPIRVIS
2622
348.2
2008-01-16
2024-08-11
15344
CADC/DAO-E2VCCD
35817
253.6
2008-02-11
2025-07-29
204190
CADC/GeminiN-GMOS
18310
30.5
2001-08-14
2025-07-29
41981
CADC/GeminiN-GNIRS
225
1.4
2004-09-05
2025-04-29
10893
CADC/GeminiN-NIRINIR
11569
3.2
2002-02-22
2023-09-28
249464
CADC/GeminiN-NIRIVIS
101
3.2
2004-06-28
2015-10-07
2181
CADC/GeminiS-Flamingos2
46641
36.0
2013-10-10
2025-06-28
90512
CADC/GeminiS-GMOS
18421
30.5
2003-02-28
2025-07-29
42236
CADC/HST-ACS
1277
11.7
2002-04-02
2018-03-19
88290
CADC/HST-NICMOS-IR
114
0.8
1997-03-21
2008-09-10
113867
CADC/HST-NICMOS-VIS
2
0.8
1997-07-23
2008-08-21
1730
CADC/HST-WFC3/NIR
654
4.9
2009-07-05
2025-07-29
107300
CADC/HST-WFC3/Vis
1190
7.3
2009-07-13
2025-07-29
132042
CADC/HST-WFPC2NIR
15
9.0
1994-03-05
2008-04-06
1366
CADC/HST-WFPC2OPT
1803
9.0
1993-12-20
2009-05-12
162072
CADC/HST-WFPCOPT
41
9.0
1989-11-30
1993-12-03
3691
CADC/Mt.Stromlo-MACHO
114404
1794.4
1992-07-21
2002-11-19
197868
CADC/UKIRT-Michelle
160
1.4
2001-10-04
2004-04-23
35337
CADC/UKIRT-UFTINIR
1871
3.2
1999-10-16
2011-07-18
183298
ESO/3.6m-TIMMI2
305
1.9
2004-05-08
2006-06-28
63817
ESO/MPG-WFI
162338
1149.1
1999-04-15
2025-07-29
156485
ESO/NTT-EMMI
3834
83.2
2004-03-17
2008-04-01
17541
ESO/NTT-SOFI
22698
24.2
2006-03-30
2023-08-15
356843
ESO/NTT-SUSI2
1366
30.5
2004-04-02
2008-12-29
17057
ESO/VISTA-VIRCAM
31935563
4726.6
2009-10-16
2023-06-03
2028655
ESO/VLT-EFOSC2
32719
16.6
2004-07-03
2025-07-26
135761
ESO/VLT-FORS1
23860
46.0
1999-01-23
2009-03-26
35852
ESO/VLT-FORS2
171115
46.0
1999-10-30
2025-07-24
257115
ESO/VLT-HAWKI
143436
56.2
2007-08-01
2025-07-23
176130
ESO/VLT-ISAAC
19153
6.4
1999-03-01
2013-12-13
208325
ESO/VLT-NACO
5111
0.9
2001-12-02
2019-09-29
383061
ESO/VLT-VIMOS
1134679
841.8
2002-10-30
2018-03-24
93108
ESO/VLT-VISIR
137
0.1
2004-05-11
2015-11-22
73068
ESO/VST-OmegaCam
2115322
3664.5
2011-04-01
2025-07-30
445944
ING/INT-PFCCD
221
121.0
1993-01-13
2014-05-17
1492
ING/INT-WFC
1089054
1169.6
2002-01-02
2023-11-09
760083
ING/JKT-JAG
2158
100.4
2002-01-03
2003-08-01
98553
ING/WHT-ACAM
27330
63.7
2009-06-10
2020-02-10
111524
ING/WHT-LDSS
1276
100.4
1993-03-18
2000-03-24
3302
ING/WHT-LIRIS
44660
18.1
2004-03-03
2020-01-19
639484
ING/WHT-PFIP
20328
256.6
1993-12-03
2016-09-22
20582
ING/WHT-WHIRCAM
13
1.0
1995-02-10
1999-06-28
3174
LCO/CTIO-0M4-09
1149
582.1
2017-12-04
2024-03-06
59230
LCO/CTIO-1M0-04
4933
697.0
2014-05-12
2025-07-29
32669
LCO/CTIO-1M0-05
19522
697.0
2014-06-01
2025-07-29
129276
LCO/CTIO-1M0-09
4021
697.0
2014-05-31
2025-07-29
26630
LCO/GOL-1M0-02
213
169.5
2014-05-02
2020-06-30
5810
LCO/HLK-0M4-04
931
582.1
2016-03-31
2023-12-07
47974
LCO/HLK-0M4-06
2231
582.1
2016-03-31
2023-12-07
114974
LCO/HLK-2M0-01
8990
100.4
2014-05-04
2025-07-29
102654
LCO/MDO-1M0-08
13538
697.0
2014-05-02
2025-07-27
89649
LCO/OT-0M4-10
1336
582.1
2015-06-03
2023-10-30
63552
LCO/OT-0M4-14
2580
582.1
2015-02-13
2023-05-09
122728
LCO/OT-0M4-XX
54
582.1
2015-02-15
2015-06-02
2577
LCO/SAAO-1M0-10
19957
697.0
2014-05-01
2025-07-29
128852
LCO/SAAO-1M0-12
12472
697.0
2014-05-01
2025-07-29
80528
LCO/SAAO-1M0-13
17774
697.0
2014-05-01
2025-07-29
114759
LCO/SED-0M8-01
513
125.3
2014-05-02
2018-02-14
36883
LCO/SSO-0M4-03
1177
582.1
2015-10-15
2023-08-14
60656
LCO/SSO-0M4-05
999
582.1
2015-10-02
2023-09-19
51473
LCO/SSO-1M0-03
3983
169.5
2014-05-01
2025-07-24
108433
LCO/SSO-1M0-11
3032
169.5
2014-05-01
2025-07-28
80493
LCO/SSO-2M0-02
5010
100.4
2014-05-01
2025-07-24
57215
MAST/Pan-STARRS1-DR2
20318328
27922.3
2009-06-03
2015-02-25
374232
NVO/Blanco-DECam
21873144
17424.0
2012-09-12
2019-07-11
451473
NVO/Blanco-ISPI
30117
104.0
2006-06-05
2014-04-10
104106
NVO/Blanco-MOSAIC2
322956
1388.2
2004-08-11
2012-02-20
83665
NVO/Blanco-NEWFIRM
126046
785.1
2010-07-03
2011-05-19
57738
NVO/Bok-CCD
197417
4844.2
2015-01-08
2017-06-04
35610
NVO/CTIO0.9m-CCD
24679
182.2
2000-04-04
2017-05-17
826261
NVO/CTIO1.3m-ANDICAM
4524
5.8
2000-04-04
2017-06-01
2141898
NVO/CTIO1m-Y4KCam
22409
392.0
2006-12-14
2014-06-02
263817
NVO/KPNO2.1m-CCD
859
29.2
2010-09-03
2014-07-02
35940
NVO/Mayall-Misc
64
0.4
2007-02-21
2015-06-29
70005
NVO/Mayall-MOSAIC
109052
1296.0
2004-09-01
2013-02-07
32998
NVO/Mayall-NEWFIRM
260610
785.1
2007-06-30
2013-02-04
130171
NVO/SOAR-OptImg
19150
27.2
2005-11-07
2017-06-14
203377
NVO/SOAR-SAM
581
9.0
2014-03-05
2017-05-23
18689
NVO/SOAR-Spartan
7929
25.4
2011-08-16
2017-05-06
90331
NVO/WIYN0.9m-MOSAIC
11534
3478.6
2004-11-25
2010-03-29
20232
NVO/WIYN0.9m-S2KB
11705
416.2
2004-09-09
2014-11-17
171614
NVO/WIYN3.5m-MiniMosaic
2887
100.4
2004-12-18
2013-04-20
12989
NVO/WIYN3.5m-WHIRC
6009
10.9
2008-04-15
2017-05-19
249238
SDSS-DR9
131306
140.8
1998-09-19
2009-11-18
938046
SMOKA/KANATA-HONIR
12225
100.4
2014-03-05
2024-01-25
248076
SMOKA/KANATA-HOWPol
17677
225.0
2008-12-06
2024-01-24
160065
SMOKA/Kiso-1kCCD
1123
155.8
1993-02-26
2000-10-24
30004
SMOKA/Kiso-2kCCD
70609
2498.0
1998-09-08
2012-02-27
117640
SMOKA/Kiso-KWFC
415904
15620.0
2012-04-02
2018-02-14
110815
SMOKA/Okayama-ISLE
1219
17.1
2006-11-15
2017-04-03
92268
SMOKA/Okayama-KOOLS
64
21.8
2008-01-04
2016-01-10
3822
SMOKA/Okayama-OASIS
85
16.2
1998-08-14
1998-12-13
6843
SMOKA/Subaru-CAC
45
0.7
1999-01-06
2000-06-21
4318
SMOKA/Subaru-CISCO
8046
3.7
1999-01-12
2007-04-09
148791
SMOKA/Subaru-COMICS
510
0.5
1999-12-14
2020-07-31
67119
SMOKA/Subaru-FOCAS
7325
36.0
2000-02-02
2023-07-16
13870
SMOKA/Subaru-HSC
14502643
8100.0
2014-03-26
2023-09-16
122053
SMOKA/Subaru-ICRS
2706
1.0
2000-09-22
2023-08-02
177283
SMOKA/Subaru-Kyoto
61
3.9
2004-04-08
2015-09-24
1065
SMOKA/Subaru-MOIRCS
38422
28.2
2004-06-11
2023-08-26
92812
SMOKA/Subaru-SCExAO
405
0.2
2000-01-22
2008-07-15
119955
SMOKA/Subaru-SuprimeCam
1143209
918.5
1999-01-05
2017-05-30
93228


Reference: Please include the following acknowledgement in any publication using this service:
- Include in the acknowledgement: "This paper used the EURONEAR MASDS Tool \footnote{http://www.euronear.org/tools/dstars/masds.php}".

Authors: Lucian Curelaru (2018)