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Double Star Imaging and Measurement

Introduction

Double star imaging can be done using a webcam.  Most of the double stars observed visually by the BackYard astronomer can also be imaged using a webcam camera.  In addition, the video data collected can be used to determine the double star's position angle and separation.  If you are already imaging planets using a webcam, you can image double stars too.

What is needed:

  • A webcam
    •  Imaging Source offers several that work very well. Good results have been achieved using the Imaging Source camera built around the ICX618 CCD chip. It has good sensitivity.
    • I am able to use my 4" f/29 Scheifspeigler and my monochrome Imaging Source camera to image magnitude 8 stars.
    • I use the my monochrome Imaging Source camera three different ways:Being able to use it in more than one way helped me justify the more expensive camera.
      • To image double stars
      • To act as a guide scope camera for DSO imaging
      • To act as a video finder to
    • The Celestron Neximage camera and the once very popular Phillips Toucam webcam provided similar results.   
    • Unfortunately the Toucam is not longer manufactured, however, the Neximage still is available. 
    • Both the Toucam and Neximage are color cameras, which is good when imaging planets, but color is not really needed for double star imaging.  
    • Using the Neximage camera:
      • Double stars as faint as magnitude 8 could be imaged using a 6" f/5.6 Newtonian.
      • Stars with magnitudes between 6 and 7 or brighter could be captured with a 6" f/12 telescope. 
      • Above f/12, only stars of magnitude 6 or brighter could be imaged.
    • Despite these limitations, there are many double stars that can be imaged using a Neximage camera.  
    • A database search using Skytools produced a "Webcam Double Star" list of more than 150 stars.  This list includes:  See the "Webcam Double Star" list provided below or view PDF file.
      • Double stars with both stars brighter than magnitude 8
      • Doubles having a separation of 3 arc-seconds or greater.
  • Capture Software and a Laptop
    • Most webcam cameras come with capture software.  You will need a laptop to control the camera.
    • Use an older laptop if you have one since you will be using it outside, in the dark, and many times in damp conditions as the temperature drops below the dew point.  
  • Portable Mass Storage
    • AVI files are large and can fill up you local hard drive quickly, especially if you are using an older laptop with a small hard drive.  Consider purchasing an external drive to store all the AVI files you record.  I use a 16GB thumb drive for capturing then I transfer each night's imaging files from the thumb drive to a more permanent and dedicated external drive.
  • A Telescope
    • Both reflectors and refractors can be used for imaging double stars.
    • Like planetary imaging the higher the f-number the better.
    • Your planet killer will work well as the double star imaging scope.
    • Higher f-numbers provide better sampling during imaging.  [More pixels per arc-sec of sky.]
    • To get good sampling with a monochrome CCD you need to be up near f/24
    • For a color CCD about twice that or f/50, very tough for the BackYard astronomer to achieve.  This is why most series BackYard planet imaging is done with a monochrome camera and color wheel.
    • Despite this you can get good images at lower f-numbers too.  I have done many double star images at f/5.6 with good results.
  • An Equatorial Mount
    • Any equatorial mount with sidereal tracking will work.
    • You don't need to use a guide star. 
    • Although not essential, a go-to mount will help find each double star system quickly.
    • It is also helpful if the mount can be controlled by the laptop via a planetarium or similar software. 
  • Software
    • RegistaxReduc
      • Registax is free.
      • Registax can be use for stacking the individual frames of an AVI file.
      • Stacking is a common method used to improve the signal to noise ratio thus producing an improved image.
      • Registax has a built in image quality assessment routine to pick out the good frames captured between periods of bad seeing.
      • Registax will align and stack each frame producing  a final jpg image of the double star system.
      • Registax can also stack drift videos producing a star trail.  [A drift video is recorded with the mount halted so the double star image is imaged as it drifts across the CCD chip.]  The end of the trail points Westward.
      • Reduc uses this fact to establish North.  [The position angle of a double star is measured from North to the minor stars position, so knowing which way is West on the double star image is important.
      • Reduc can be obtained for free be emailing its author at This email address is being protected from spambots. You need JavaScript enabled to view it.
      • Reduc can determine the position angle and separation of each double star imaged.
      • Reduc will perform the drift analysis using the drift AVI file to determine the image rotation.
      • Reduc can be calibrated for any new given telescope/barlow pairing using a Calibration double star
      • If you have pre-determined the appropriate image scale, this information can be input instead of using the double star calibration method
    • VirtualDub
      • I have found that several of the software applications listed above are not totally compatible with the AVI file format produced by capture software offered by Imaging Source.  VirtualDub will fix these incompatibility issues if you copy the original AVI into a new one using VirtualDub.
    • LiMovie
      • LiMovie was actually designed to measure occultations, however it can be used to determine the image scale of your telescope and barlow pair.
      • LiMovie will determine and save the pixel position of up to three stars selected by the user.
      • LiMovie will track these stars, reporting their pixel position, x and y, frame by frame.
      • LiMovie will export a comma delimited file of the pixel postions for each frame.  This file can be imported into Excel for analysis.
      • Using the frame rate and the pixel position of the first and last frames of a star drift video, the image scale of your telescope and barlow pair can be calculated.
    • Paint.net
      • Paint.net is a free photoshop clone.
      • It is a handy image editor

 

                   
Webcam Double Stars
                   
WDS Number Discoverer Alternate ID1 Alternate ID2 Con RA Dec Major Minor Separation
00026+6606A STF3053A HR 9094 HD 225009 Cas 00h03m19.4s +66°10'38" 5.9 7.3 15.0"
00491+5749A STF  60A Achird Eta Cas Cas 00h49m56.1s +57°53'19" 3.6 7.4 13.3"
01001+4443A STF  79A HR 283 HD 5789 And 01h00m50.2s +44°47'14" 5.7 6.9 7.8"
01057+2128A STF  88A Psi 1 Psc 74 Psc Psc 01h06m24.6s +21°32'44" 5.3 5.5 30.0"
01137+0735A STF 100A Zeta Psc 86 Psc Psc 01h14m26.2s +07°38'45" 5.2 6.4 22.7"
01495-1042A ENG   8A Chi Cet 53 Cet Cet 01h50m15.0s -10°37'19" 4.7 6.8 184.7"
01536+1918A STF 180A Mesarthim Gamma 2 Ari Ari 01h54m16.6s +19°21'33" 4.6 4.6 7.4"
01560+3716A STFA  4A 56 And HR 557 And 01h56m58.2s +37°19'04" 5.7 6.1 200.5"
01580+2336A H 5  12A Lambda Ari 9 Ari Ari 01h58m41.3s +23°39'40" 4.8 7.7 36.7"
02039+4220A STF 205A Almaak Gamma 1 And And 02h04m44.6s +42°23'40" 2.1 5 9.5"
02128-0223A STF 231A 66 Cet HR 650 Cet 02h13m29.1s -02°19'57" 5.7 7.9 16.4"
02338-2814A HJ 3506A Omega For HR 749 For 02h34m26.5s -28°10'34" 4.9 7.9 10.6"
02358+3442A AG  304A 15 Tri HR 750 Tri 02h36m36.7s +34°44'44" 5.4 6.8 141.5"
02506+5553A STF 307A Miram Eta Per Per 02h51m42.6s +55°57'01" 3.8 7.9 28.5"
02583-4018A PZ    2A Acamar Theta 1 Eri Eri 02h58m47.1s -40°15'14" 2.9 4.4 8.3"
03009+5221A STF 331A HR 890 HD 18537 Per 03h01m51.4s +52°24'15" 5.2 6.7 11.9"
03121-2859A HJ 3555A Fornacis Alpha For For 03h12m39.5s -28°56'14" 3.8 7.2 5.3"
03486-3737A DUN  16A HR 1190 HD 24072 Eri 03h49m06.6s -37°34'52" 4.3 5.4 8.2"
03492+2403A HL   29A Atlas 27 Tau Tau 03h49m58.4s +24°05'34" 3.6 6.8 92.9"
03543-0257A STF 470A 32 Eri HR 1212 Eri 03h54m58.6s -02°55'01" 4.4 6.1 6.9"
04226+2538A STF 528A Chi Tau 59 Tau Tau 04h23m24.7s +25°39'32" 5.4 7.6 19.6"
04254+2215A STF 541A Kappa 1 Tau 65 Tau Tau 04h26m10.9s +22°19'21" 4.2 5.4 339.7"
04286+1554A STFA 10A Theta 2 Tau 78 Tau Tau 04h29m26.4s +15°53'55" 3.4 4 336.7"
04306+1611A LDS2246A HR 1427 HD 28527 Tau 04h31m20.4s +16°13'16" 4.8 6.7 249.8"
04320+5354A STF 550A 1 Cam DL Cam Cam 04h33m07.2s +53°56'13" 5.8 7 10.3"
04392+1552A STFA 11A Sigma 2 Tau 92 Tau Tau 04h40m03.2s +15°56'33" 4.7 5.2 437.5"
04422+2257A MCA  16A Tau Tau 94 Tau Tau 04h43m03.7s +22°58'49" 4.3 7 62.8"
04436-0848A STF 590A 55 Eri HR 1506 Eri 04h44m14.4s -08°46'22" 6 6.9 9.2"
05062+5900A STFA 13A 11 Cam BV Cam Cam 05h07m20.0s +58°59'14" 5.2 6.4 178.7"
05228+0333A STF 696A 23 Ori HR 1770 Ori 05h23m32.8s +03°33'21" 5 7.1 31.6"
05260-1942A HJ 3759A HR 1812 HD 35736 Lep 05h26m35.4s -19°41'04" 5.8 7.6 26.7"
05322+1703A STF 730A HR 1847 HD 36408 Tau 05h33m01.3s +17°03'57" 5.5 6.5 9.6"
05350-0600A STF 747A HR 1887 HD 36960 Ori 05h35m42.6s -05°59'40" 4.8 5.6 36.2"
05355-0555A STF 752A Nair al Saif Iota Ori Ori 05h36m05.9s -05°54'08" 2.8 7 11.3"
0536-0525A STFA 16A Theta 2 Ori 43 Ori Ori 05h36m03.0s -05°24'31" 5 6.2 52.2"
05387-0236A BU 1032A Sigma Ori 48 Ori Ori 05h39m25.7s -02°35'37" 3.8 6.5 41.8"
05445-2226A H 6  40A Gamma Lep 13 Lep Lep 05h45m02.1s -22°26'40" 3.6 6.4 97.8"
06090+0230A STF 855A HR 2174 HD 42111 Ori 06h09m40.3s +02°29'46" 5.7 6.9 29.4"
06116+4843A STF 845A 41 Aur HR 2176 Aur 06h12m38.8s +48°42'15" 5.8 7.1 7.6"
06203-3003A SMY   1A Furud Zeta CMa CMa 06h20m50.5s -30°04'08" 3 7.7 178.8"
06237+0436A STF 900A Epsilon Mon 8 Mon Mon 06h24m29.1s +04°35'05" 4.3 6.9 12.5"
06288-0702A STF 919A Beta Mon 11 Mon Mon 06h29m28.5s -07°02'32" 3.8 5 7.1"
06326-3202A HJ 3869A HR 2397 HD 46547 CMa 06h33m09.9s -32°02'23" 5.7 7.7 22.1"
06364-1840A SHJ  73A Nu 1 CMa 6 CMa CMa 06h36m58.6s -18°40'15" 5.7 7.6 17.8"
06386-4813A DUN  31A HR 2462 HD 47973 Pup 06h39m00.4s -48°13'50" 5.1 7.4 12.9"
06546+1311A STF 982A 38 Gem HR 2564 Gem 06h55m24.2s +13°09'32" 4.7 7.8 7.2"
06586-2858A CPO   7A Adara Epsilon CMa CMa 06h59m09.8s -28°59'22" 1.5 7.5 7.0"
07039-4336A DUN  38A HR 2667 HD 53705 Pup 07h04m23.0s -43°37'29" 5.3 7.1 21.0"
07166-2319A HJ 3945A HR 2764 HD 56577 CMa 07h17m11.2s -23°20'18" 4.8 6.1 26.8"
07184-3645A JC   10A NV Pup HR 2787 Pup 07h18m47.7s -36°45'24" 4.8 5.1 240.0"
07228+5518A STF1062A 19 Lyn HR 2784 Lyn 07h23m57.6s +55°15'04" 5.8 7 15.0"
07240-2918A SMY   2A Aludra Eta CMa CMa 07h24m38.1s -29°19'40" 2.4 6.9 179.0"
07289-3151A DUN  49A HR 2870 HD 59499 Pup 07h29m22.6s -31°52'28" 5.9 7.1 8.9"
07343-2328A H N  19A HR 2910 HD 60585 Pup 07h34m53.0s -23°30'06" 5.1 5.9 9.8"
07388-2648A H 3  27A HR 2949 HD 61556 Pup 07h39m23.3s -26°49'58" 3.8 4.6 9.9"
08095-4721A DUN  65A Suhail al Muhlif Gamma 2 Vel Vel 08h09m57.5s -47°22'22" 1.9 4.5 41.4"
08140-3620A DUN  67A OS Pup HR 3240 Pup 08h14m29.0s -36°21'37" 5.2 6 66.8"
08358+0637A STF1245A HR 3395 HD 72945 Cnc 08h36m33.4s +06°34'23" 5.9 7.4 10.0"
08467+2846A STF1268A Iota Cnc 48 Cnc Cnc 08h47m29.9s +28°42'30" 4 6.6 30.3"
08552-1815A S   585A HR 3554 HD 76376 Hya 08h55m49.3s -18°17'25" 5.8 7.1 64.2"
09204-0934A SHJ 105A 27 Hya HR 3709 Hya 09h21m07.9s -09°36'40" 4.8 7.1 229.1"
09291-0246A HJ 1167A Tau 1 Hya 31 Hya Hya 09h29m49.2s -02°49'35" 4.6 7.9 66.2"
09308-3153A DUN  78A Zeta 1 Ant HR 3781 Ant 09h31m20.4s -31°56'41" 5.8 7 8.2"
10083+1159A STFB  6A Regulus Alpha Leo Leo 10h09m04.2s +11°54'06" 1.4 7.6 175.3"
10166+2327A STFA 18A Adhafera Zeta Leo Leo 10h17m25.0s +23°20'58" 3.4 5.9 333.8"
10320-4504A PZ    3A HR 4135 HD 91355 Vel 10h32m31.5s -45°07'50" 5.8 6.1 13.5"
10433+0443A STF1466A 35 Sex HR 4193 Sex 10h44m01.7s +04°40'43" 5.8 7.3 6.8"
10556+2445A STF1487A 54 Leo HR 4259 Leo 10h56m19.0s +24°40'39" 4.3 6.4 6.6"
11323-2916A H 3  96A HR 4443 HD 100287 Hya 11h32m55.3s -29°19'47" 4.9 5.8 9.4"
12021+4304A FOR   1A 67 UMa DP UMa UMa 12h02m45.5s +42°58'12" 5.2 6.8 278.5"
12289+2554A STFA 21A 17 Com AI Com Com 12h29m33.0s +25°50'21" 5.3 7 146.2"
12351+1823A STF1657A 24 Com HR 4792 Com 12h35m46.4s +18°18'17" 5 6.5 19.9"
12413-1301A STF1669A HR 4821 HD 110317 Crv 12h41m56.5s -13°05'05" 5.2 6 5.3"
12492+8325A STF1694A HR 4893 HD 112028 Cam 12h49m11.2s +83°20'15" 5.4 5.9 21.3"
12560+3819A STF1692A Cor CAROLI Alpha 2 CVn CVn 12h56m37.1s +38°14'46" 2.9 6.2 19.1"
13099+3831A STFA 24A 17 CVn HR 4971 CVn 13h10m37.9s +38°25'41" 5.9 6.2 277.4"
13240+5456A STF1744A Mizar Zeta UMa UMa 13h24m25.0s +54°51'18" 2.1 3.9 14.4"
13368-2630A H N  69A HR 5120 HD 118349 Hya 13h37m31.4s -26°33'31" 5.7 6.7 9.2"
13518-3300A H 3 101A 3 Cen V983 Cen Cen 13h52m34.3s -33°03'20" 4.3 6.1 7.9"
14135+5147A STF1821A Asellus Tertius Kappa 2 Boo Boo 14h13m55.0s +51°43'41" 4.5 6.8 13.5"
14162+5122A STFA 26A Iota Boo 21 Boo Boo 14h16m35.6s +51°18'23" 4.8 7.5 38.7"
14234+0827A STF1835A HR 5386 HD 126129 Boo 14h24m00.3s +08°23'20" 4.9 7 6.2"
14407+1625A STF1864A Pi 1 Boo 29 Boo Boo 14h41m19.3s +16°21'50" 4.5 5.9 5.5"
14449+2704A STF1877A Izar Epsilon Boo Boo 14h45m32.1s +27°01'13" 2.4 4.8 2.9"
14460-2527A H 3  97A 54 Hya HR 5497 Hya 14h46m44.7s -25°29'44" 5.2 7.2 8.3"
14508-1602A SHJ 186A Zuben Elgenubi Alpha 2 Lib Lib 14h51m35.3s -16°05'35" 2.8 5.3 231.1"
14513+1906A STF1888A Xi Boo 37 Boo Boo 14h51m58.4s +19°02'53" 4.6 7.1 5.8"
15119-4844A DUN 177A Kappa 1 Lup HR 5646 Lup 15h12m49.6s -48°47'02" 3.7 5.8 26.5"
15141+3147A STT 292A HR 5674 HD 135438 Boo 15h14m36.7s +31°44'26" 6 7.9 119.0"
15156+3319A STFA 27A Delta Boo 49 Boo Boo 15h16m00.3s +33°16'03" 3.5 8.7 103.8"
15245+3722A STFA 28A Alkalurops Mu 1 Boo Boo 15h24m57.4s +37°19'58" 4.3 7.2 107.1"
15387-0848A STF1962A HR 5816 HD 139461 Lib 15h39m21.5s -08°49'44" 5.4 6.7 11.6"
15394+3638A STF1965A Zeta 2 CrB 7 CrB CrB 15h39m50.6s +36°35'43" 4.6 5.9 6.3"
15569-3358A PZ    4A Xi 1 Lup HR 5925 Lup 15h57m42.7s -34°00'04" 5.1 5.6 10.3"
16001-3824A RMK  21A Eta Lup HR 5948 Lup 16h00m58.3s -38°25'51" 3.4 7.8 14.9"
16081+1703A STF2010A Marfik Kappa Her Her 16h08m38.7s +17°00'54" 5 6.4 27.4"
16081+1703B STF2010B Kappa Her 7 Her Her 16h08m39.2s +17°01'21" 6.2 6.4 27.4"
16147+3352A STF2032A Sigma CrB 17 CrB CrB 16h15m08.7s +33°49'42" 5.7 6.7 7.2"
16195-3054A BSO  12A HR 6077 HD 146836 Sco 16h20m21.3s -30°56'07" 5.5 7.3 23.4"
16224+3345A STFA 29A Nu 1 CrB 20 CrB CrB 16h22m49.4s +33°46'16" 5.2 5.3 360.8"
16272-4733A HJ 4853A Epsilon Nor HR 6115 Nor 16h28m07.3s -47°34'54" 4.5 7.5 22.8"
16362+5255A STF2078A 17 Dra HR 6185 Dra 16h36m30.0s +52°54'03" 5.1 6.5 3.2"
16406+0413A STFA 31A 37 Her HR 6195 Her 16h41m16.6s +04°11'51" 5.8 6.9 72.6"
17038+1335A STFA 33A HR 6341 HD 154228 Her 17h04m14.2s +13°35'25" 5.9 6.1 305.1"
17053+5428A STF2130A Mu Dra 21 Dra Dra 17h05m34.2s +54°27'23" 5.8 5.8 2.4"
17146+1424A STF2140A Rasalgethi Alpha 1 Her Her 17h15m13.5s +14°22'45" 3.1 5.4 4.6"
17151+2451A STF3127A Sarin Delta Her Her 17h15m32.9s +24°49'39" 3.1 8.3 11.0"
17155-2635A SHJ 243A 36 Oph HR 6402 Oph 17h16m08.0s -26°37'05" 4.3 5.2 5.0"
17180-2417A H 3  25A Omicron Oph 39 Oph Oph 17h18m47.5s -24°17'54" 5.1 6.7 10.0"
17236+3708B STF2161B Rho Her 75 Her Her 17h24m06.3s +37°08'20" 5.4 5.5 4.0"
17322+5511A STFA 35A Kuma Nu 2 Dra Dra 17h32m29.3s +55°10'05" 4.9 5 63.4"
17373-4300A SEE 510A Sargas Theta Sco Sco 17h38m14.2s -43°00'15" 1.9 5.4 6.5"
17420+7209A STF2241A Dsiban Psi 1 Dra Dra 17h41m38.3s +72°08'46" 4.6 5.9 30.2"
17420+7209B STF2241B Psi 1 Dra 31 Dra Dra 17h41m40.1s +72°09'15" 5.8 5.9 30.2"
17591-3015A PZ    6A HR 6693 PPM 297085 Sgr 17h59m54.6s -30°15'07" 5 7.1 5.8"
18002+8000A STF2308A 41 Dra HR 6810 Dra 17h59m03.2s +80°00'31" 5.7 6.2 18.6"
18015+2136A STF2264A 95 Her HR 6730 Her 18h02m02.6s +21°36'00" 4.3 5.3 6.3"
18055+0230A STF2272A 70 Oph V2391 Oph Oph 18h06m05.9s +02°30'04" 4.2 6.2 6.1"
18079+2606A STF2280A 100 Her HR 6781 Her 18h08m20.1s +26°06'28" 5.8 5.9 14.2"
18334-3843A DUN 222A Kappa 2 CrA HR 6953 CrA 18h34m16.1s -38°42'54" 5.7 6.4 21.5"
18443+3938A STF2382A Epsilon 1 Lyr 4 Lyr Lyr 18h44m45.2s +39°41'21" 4.7 6.2 2.5"
18465-0058A STF2379A 5 Aql HR 7059 Aql 18h47m08.3s -00°56'40" 5.6 7.7 12.5"
18501+3322A STFA 39A Sheliak Beta Lyr Lyr 18h50m32.8s +33°22'59" 3.2 8.6 46.0"
18512+5924A STF2420A Omicron Dra 47 Dra Dra 18h51m21.8s +59°24'35" 4.7 7.9 36.5"
18563+0413A STF2417A Theta 1 Ser 63 Ser Ser 18h56m51.4s +04°13'28" 4.1 5.1 22.1"
19050-0402A SHJ 286A 15 Aql HR 7225 Aql 19h05m38.3s -04°00'31" 5.4 7.2 39.1"
19121+4951A STF2486A HR 7294 HD 179958 Cyg 19h12m24.1s +49°53'09" 5.8 6.8 7.3"
19153+1505A STTA178A HR 7300 HD 180262 Aql 19h15m55.1s +15°06'39" 5.6 7.8 89.9"
19226-4428A DUN 226A Beta 1 Sgr HR 7337 Sgr 19h23m33.5s -44°26'02" 4 7.4 29.6"
19288+2442A STFA 42A Alpha Vul 6 Vul Vul 19h29m14.3s +24°41'47" 4.4 6 424.5"
19307+2758A STFA 43A Albireo Beta 1 Cyg Cyg 19h31m14.2s +27°59'32" 3.1 5.4 34.4"
19418+5031A STFA 46A 16 Cyg HR 7503 Cyg 19h42m08.9s +50°33'42" 5.9 6.4 39.7"
19546-0814A STF2594A 57 Aql HR 7593 Aql 19h55m19.5s -08°11'25" 5.7 6.5 35.7"
20135+4646A HJ 1495A 31 Cyg V695 Cyg Cyg 20h14m02.0s +46°47'14" 3.7 13.2 34.3"
20146+3647A ENG  72A 29 Cyg V1644 Cyg Cyg 20h15m00.9s +36°51'08" 5 6.6 215.8"
20210-1447A STFA 52A Dabih Beta Cap Cap 20h21m44.3s -14°44'17" 3.1 6.2 205.3"
20299-1835A SHJ 324A Omicron Cap 12 Cap Cap 20h30m38.4s -18°32'17" 5.9 6.8 21.6"
20467+1607A STF2727A Gamma 2 Del 12 Del Del 20h47m15.7s +16°10'34" 3.9 5.2 9.0"
21069+3844A STF2758A 61 Cyg V1803 Cyg Cyg 21h07m29.0s +38°49'11" 5.2 6.3 31.5"
21069+3844B STF2758B 61 Cyg HR 8086 Cyg 21h07m30.3s +38°48'43" 6 6.3 31.5"
21287+7034A STF2806A Alfirk Beta Cep Cep 21h28m49.6s +70°37'30" 3.2 8 13.3"
21435+3818A S   799A 79 Cyg HR 8307 Cyg 21h43m58.4s +38°20'58" 5.7 6.9 150.3"
21520+5548A STF2840A HR 8357 HD 208095 Cep 21h52m28.1s +55°51'54" 5.7 6.6 17.7"
22038+6437A STF2863A Alkurhah Xi Cep Cep 22h04m10.7s +64°41'55" 4.3 6.6 8.4"
22038+6437B STF2863B HD 209790 HIP 108917 Cep 22h04m09.4s +64°41'56" 6.3 6.6 8.4"
22143-2104A H N  56A 41 Aqr HR 8480 Aqr 22h15m01.4s -21°00'33" 5.3 7.2 5.1"
22315-3221A PZ    7A Beta PsA 17 PsA PsA 22h32m15.0s -32°16'47" 4.3 7.9 30.3"
22358+3937A STF2922A 8 Lac HR 8603 Lac 22h36m28.0s +39°42'28" 5.7 6.5 22.3"
22366-3139A DUN 241A HR 8601 HD 214122 PsA 22h37m19.7s -31°35'49" 5.8 7.6 93.6"
23052-0743A A   417A 83 Aqr HR 8782 Aqr 23h05m51.2s -07°37'19" 5.4 7.6 254.8"
23191-1328A STF2998A 94 Aqr HR 8866 Aqr 23h19m48.4s -13°23'11" 5.2 7.5 12.4"
23246+6216A H    24A 4 Cas HR 8904 Cas 23h25m27.2s +62°21'38" 5 7.8 98.6"
23418-1748A HJ 5413A 104 Aqr HR 8982 Aqr 23h42m27.2s -17°44'38" 4.8 7.9 119.5"
23460-1841A H 2  24A 107 Aqr HR 9002 Aqr 23h46m42.3s -18°36'20" 5.3 6.7 6.8"
23591+5546B STF3049B HD 224572 SAO 35947 Cas 23h59m42.4s +55°50'01" 7.1 7.3 2.4"
WDS Number Discoverer Alternate ID1 Alternate ID2 Con RA Dec Major Minor Separation