- Complete Object List (CrB) -

And (188) Cas (197) CVn (133) Lac (55) Ori (108) Sge (27)
Aql (159) Cep (123) Cyg (277) Leo (206) Peg (237) Sgr (88)
Aqr (40) Cet (37) Del (45) Lep (17) Per (138) Tau (67)
Aqu (1) CMa (24) Dra (173) Lib (9) Psc (102) Tri (82)
Ari (54) CMi (12) Equ (18) LMi (39) Pup (16) UMa (294)
Aur (86) Cnc (85) Eri (15) Lyn (89) Sco (10) UMi (15)
Boo (81) Com (177) Gem (119) Lyr (70) Sct (39) Vir (213)
Cam (110) CrB (44) Her (141) Mon (61) Ser (62) Vul (62)
Cap (16) Crv (7) Hya (22) Oph (54) Sex (23)

COU 610 (**)
Name: COU610, 4 CrB, theta CrB
Type: **
Constellation: CrB
Coordinates: 15h32m55.78s / +31°21'32.90"

Components:
m1 m2 ρ θ Year
4m.3 6m.3 0.8" 198° 2016

../images/binary-star-orbits/COU610-orbit.jpg

Robert Zebahl
152mm f/8, 300x
2021-07-23: Theta CrB was only a few degrees above the house roof and the refractor was insufficiently cooled down. In no way visible as a double star. I used magnifications from 200x to 400x.

H 5 38 (**)
Name: H5 38
Type: **
Constellation: CrB
Coordinates: 16h22m56.50s / +32°19'58.80"

Components:
m1 m2 ρ θ Year
6m.4 9m.8 31.0" 16° 2020
René Merting
12.5" f/4.5, 72x, SQM-L 21.0
bei 72x ein sehr ungleiches Paar mit mindestens 2.5 Magnituden Helligkeitsunterschied - A strahlt weiß, B wirkt dagegen grau

NGC 5958 (Gx)

../images/dss/dss2blue_153449.12_+283918.43_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC5958, UGC9909, H2.399
Type: Gx
Constellation: CrB
Coordinates: 15h34m49.12s / +28°39'18.43"
Brightness / Size: 12m.6 / 1.0'×1.0'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
Compact, round, well defined, evenly bright. Barely seen with direct vision.

 		EASY
René Merting
100mm f/6.4, 71x, SQM-L 21.3
bei 71x ist indirekt blickweise ein kompakter dumpfer Nebelschimmer sichtbar

 		DIFFICULT
12.5" f/4.5, 160x, SQM-L 21.3
bei 72x ist die Galaxie als kleiner homogen heller Fleck sichtbar - indirekt wirkt sie deutlich größer - bei 160x ist sie dann direkt gut sichtbar wie ein flauschiger Ball 		EASY

NGC 5961 (Gx)

../images/dss/dss2blue_153516.46_+305150.72_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC5961, UGC9918
Type: Gx
Constellation: CrB
Coordinates: 15h35m16.46s / +30°51'50.72"
Brightness / Size: 14m.1 / 0.8'×0.3'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Slightly elongated, slight brightening toward the middle, overall high surface brightness. 		MODERATE

NGC 5974 (Gx)

../images/dss/dss2blue_153902.39_+314534.92_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC5974, UGC9952
Type: Gx
Constellation: CrB
Coordinates: 15h39m02.39s / +31°45'34.92"
Brightness / Size: 14m.2 / 0.6'×0.3'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
At 80x compact, occasionally elongated nebula. At 150x roundish to slightly elongated (NW-SE), small. 		MODERATE

NGC 6001 (Gx)

../images/dss/dss2blue_154745.96_+283830.67_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6001, UGC10036, H3.371
Type: Gx
Constellation: CrB
Coordinates: 15h47m45.96s / +28°38'30.67"
Brightness / Size: 13m.6 / 1.0'×1.0'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
Roundish, evenly bright, faint. At 150x well seen with averted vision. 		MODERATE

NGC 6016 (Gx)

../images/dss/dss2blue_155554.83_+265758.71_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6016, UGC10096
Type: Gx
Constellation: CrB
Coordinates: 15h55m54.83s / +26°57'58.71"
Brightness / Size: 14m.3 / 1.0'×0.5'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.2
Roundish to slightly oval, evenly bright. 		DIFFICULT

NGC 6038 (Gx)

../images/dss/dss2blue_160240.55_+372133.89_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6038, UGC10149, H3.622
Type: Gx
Constellation: CrB
Coordinates: 16h02m40.55s / +37°21'33.89"
Brightness / Size: 13m.5 / 1.1'×1.1'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
At 80x moderately condensed, rather faint, roundish. At 150x similar view. 		MODERATE

NGC 6069 (Gx)

../images/dss/dss2blue_160741.61_+385550.73_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6069
Type: Gx
Constellation: CrB
Coordinates: 16h07m41.61s / +38°55'50.73"
Brightness / Size: 14m.3 / 0.9'×0.9'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
Compact, roundish, pretty faint. At 150x well visible with averted vision. 		MODERATE

NGC 6077 (Gx)

../images/dss/dss2blue_161114.11_+265524.53_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6077, UGC10254
Type: Gx
Constellation: CrB
Coordinates: 16h11m14.11s / +26°55'24.53"
Brightness / Size: 13m.3 / 1.2'×1.1'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.2
At 80x pretty faint and small. At 150x roundish to slightly oval. Nearby field star disturbs. 		MODERATE

NGC 6085 (Gx)

../images/dss/dss2blue_161235.24_+292153.68_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6085, UGC10269
Type: Gx
Constellation: CrB
Coordinates: 16h12m35.24s / +29°21'53.68"
Brightness / Size: 13m.0 / 1.5'×1.2'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.2
Slightly oval, faint, getting a bit brighter toward the middle. 		MODERATE

NGC 6086 (Gx)

../images/dss/dss2blue_161235.54_+292905.46_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6086, UGC10270
Type: Gx
Constellation: CrB
Coordinates: 16h12m35.54s / +29°29'05.46"
Brightness / Size: 12m.8 / 1.7'×1.2'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.2
At 80x small, faint, round. At 150x slightly condensed. 		MODERATE

NGC 6096 (Gx)

../images/dss/dss2blue_161446.71_+263331.40_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6096
Type: Gx
Constellation: CrB
Coordinates: 16h14m46.71s / +26°33'31.40"
Brightness / Size: 14m.2 / 0.9'×0.4'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.2
Round, very diffuse, almost evenly bright, faint. Should be revisited for sure. 		MODERATE

NGC 6097 (Gx)

../images/dss/dss2blue_161426.15_+350632.82_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6097
Type: Gx
Constellation: CrB
Coordinates: 16h14m26.15s / +35°06'32.82"
Brightness / Size: 13m.9 / 1.1'×0.6'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Pretty faint, roundish (?), getting a bit brighter toward the middle. 		MODERATE

NGC 6102 (Gx)

../images/dss/dss2blue_161536.88_+280930.76_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6102, UGC10300
Type: Gx
Constellation: CrB
Coordinates: 16h15m36.88s / +28°09'30.76"
Brightness / Size: 13m.9 / 1.2'×0.8'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.2
Very faint, slightly oval, evenly bright. 		DIFFICULT

NGC 6104 (Gx)

../images/dss/dss2blue_161630.70_+354229.13_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6104, UGC10309, H3.688
Type: Gx, Sy1
Constellation: CrB
Coordinates: 16h16m30.70s / +35°42'29.13"
Brightness / Size: 13m.3 / 0.8'×0.7'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
At 80x rather compact, slightly condensed. At 150x roundish, faint, pretty small a slightly brighter toward the middle. 		MODERATE

NGC 6105 (Gx)

../images/dss/dss2blue_161709.29_+345243.97_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6105
Type: Gx
Constellation: CrB
Coordinates: 16h17m09.29s / +34°52'43.97"
Brightness / Size: 14m.3 / 0.6'×0.4'
Robert Zebahl
8" f/6, 216x, Bortle 4, SQM-L 21.1
Compact, roundish, slightly condensed. 		DIFFICULT

NGC 6107 (Gx)

../images/dss/dss2blue_161720.14_+345405.98_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6107, UGC10311
Type: Gx
Constellation: CrB
Coordinates: 16h17m20.14s / +34°54'05.98"
Brightness / Size: 13m.8 / 0.9'×0.7'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Slightly oval, rather evenly bright, well seen with averted vision. 		MODERATE

NGC 6108 (Gx)

../images/dss/dss2blue_161725.60_+350808.47_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6108
Type: Gx
Constellation: CrB
Coordinates: 16h17m25.60s / +35°08'08.47"
Brightness / Size: 14m.4 / 0.7'×0.5'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Pretty faint, slightly condensed, round, very diffuse. 		MODERATE

NGC 6109 (Gx)

../images/dss/dss2blue_161740.59_+350015.48_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6109, UGC10316
Type: Gx
Constellation: CrB
Coordinates: 16h17m40.59s / +35°00'15.48"
Brightness / Size: 13m.0 / 1.0'×1.0'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Roundish, slightly condensed, fairly well visible with averted vision. 		MODERATE

NGC 6110 (Gx)

../images/dss/dss2blue_161744.02_+350513.47_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6110
Type: Gx
Constellation: CrB
Coordinates: 16h17m44.02s / +35°05'13.47"
Brightness / Size: 14m.8 / 0.6'×0.3'
Robert Zebahl
8" f/6, 216x, Bortle 4, SQM-L 21.1
Not permanently seen with averted vision, very compact, appeared occasionally slightly elongated. 		DIFFICULT

NGC 6112 (Gx)

../images/dss/dss2blue_161800.57_+350636.74_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6112
Type: Gx
Constellation: CrB
Coordinates: 16h18m00.57s / +35°06'36.74"
Brightness / Size: 13m.9 / 0.5'×0.5'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Round, getting brighter toward the middle with distinct core. 		MODERATE

NGC 6114 (Gx)

../images/dss/dss2blue_161823.61_+351027.75_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6114
Type: Gx
Constellation: CrB
Coordinates: 16h18m23.61s / +35°10'27.75"
Brightness / Size: 14m.4 / 0.8'×0.6'
Robert Zebahl
8" f/6, 216x, Bortle 4, SQM-L 21.1
Very faint, roundish brightening. 		DIFFICULT

NGC 6116 (Gx)

../images/dss/dss2blue_161854.58_+350913.83_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6116, UGC10336
Type: Gx
Constellation: CrB
Coordinates: 16h18m54.58s / +35°09'13.83"
Brightness / Size: 14m.3 / 1.1'×0.6'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Fairly faint, slightly oval, evenly bright. 		MODERATE

NGC 6117 (Gx)

../images/dss/dss2blue_161918.19_+370543.08_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6117, NGC6117A, UGC10338
Type: Gx
Constellation: CrB
Coordinates: 16h19m18.19s / +37°05'43.08"
Brightness / Size: 13m.8 / 1.2'×1.2'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
Very diffuse, faint, round, almost evenly bright. 		MODERATE

NGC 6120 (Gx)

../images/dss/dss2blue_161948.09_+374628.23_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6120, UGC10343, H3.623
Type: Gx
Constellation: CrB
Coordinates: 16h19m48.09s / +37°46'28.23"
Brightness / Size: 13m.9 / 0.6'×0.4'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Very compact, getting brighter toward the middle. 		MODERATE

NGC 6122 (Gx)

../images/dss/dss2blue_162009.55_+374753.53_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6122
Type: Gx
Constellation: CrB
Coordinates: 16h20m09.55s / +37°47'53.53"
Brightness / Size: b15m.0 / 0.9'×0.3'
Robert Zebahl
8" f/6, 216x, Bortle 4, SQM-L 21.1
Very compact, almost stellar brightening. Held with averted vision. I probably saw only the bright central area. 		DIFFICULT

NGC 6126 (Gx)

../images/dss/dss2blue_162127.95_+362235.44_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6126, UGC10353
Type: Gx
Constellation: CrB
Coordinates: 16h21m27.95s / +36°22'35.44"
Brightness / Size: 13m.6 / 0.8'×0.8'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
Quite faint, slightly condensed brightening near a medium bright field star. 		MODERATE

NGC 6129 (Gx)

../images/dss/dss2blue_162143.29_+375945.42_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6129, H3.891
Type: Gx
Constellation: CrB
Coordinates: 16h21m43.29s / +37°59'45.42"
Brightness / Size: 14m.0 / 0.7'×0.7'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Round, nearly evenly bright. Well visible with averted vision. 		MODERATE

NGC 6131 (Gx)

../images/dss/dss2blue_162152.23_+385556.69_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6131, NGC6131A, UGC10356
Type: Gx
Constellation: CrB
Coordinates: 16h21m52.23s / +38°55'56.69"
Brightness / Size: 13m.1 / 1.0'×1.0'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Slightly condensed, roundish, pretty faint haze. 		MODERATE

NGC 6137 (Gx)

../images/dss/dss2blue_162303.09_+375520.49_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6137, NGC6137A, UGC10364, H3.624
Type: Gx
Constellation: CrB
Coordinates: 16h23m03.09s / +37°55'20.49"
Brightness / Size: 13m.1 / 1.9'×1.2'
Robert Zebahl
8" f/6, 80x, Bortle 4, SQM-L 21.1
At 80x moderately condensed, oval. At 150x a faint field star at the eastern edge apparent. 		MODERATE

NGC 6137B (Gx)

../images/dss/dss2blue_162259.70_+375656.45_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6137B, MCG+6-36-38, PGC57964
Type: Gx
Constellation: CrB
Coordinates: 16h22m59.70s / +37°56'56.45"
Brightness / Size: b15m.5 / 0.5'×0.5'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Very compact, slight brightening toward the middle, faint. At 216x a bit easier to see with averted vision. 		DIFFICULT

NGC 6142 (Gx)

../images/dss/dss2blue_162321.10_+371530.60_5_web.jpg
Image source: DSS II (blue) - 5'×5'
Name: NGC6142, UGC10366, H3.892
Type: Gx
Constellation: CrB
Coordinates: 16h23m21.10s / +37°15'30.60"
Brightness / Size: 13m.8 / 2.0'×0.5'
Robert Zebahl
8" f/6, 150x, Bortle 4, SQM-L 21.1
Slightly oval, faint, almost evenly bright. 		MODERATE

nu CrB (**)
Name: nu CrB, nu 1/2 CrB, 20 CrB
Type: **
Constellation: CrB
Coordinates: 16h22m21.42s / +33°47'56.90"

Components:
m1 m2 ρ θ Year
STFA29 AB 5m.4 5m.6 354.7" 164° 2011
HN 81 AC 5m.4 12m.6 68.1" 241° 2002
STFA29 AD 5m.4 11m.5 277.2" 153° 2020
H6 18 BD 5m.6 11m.5 98.7" 16° 2020
René Merting
B 18x70, SQM-L 21.0
AB: auffallend, zwei gleichhelle Sterne weit getrennt - die südliche Komponente strahlt zartgelb
107mm f/5.6, 30x, SQM-L 21.0
bei 30x ein wunderschönes Sternpaar zweier gleichheller Sterne - beide strahlen in einem schönen warmgelben Farbton, wie ein klares Schlüsselblumengelb, die nördliche Komponente ist dabei noch ein kleines bisschen intensiver
12.5" f/4.5, 72x, SQM-L 21.0
AB: bei 72x ein weit auseinander stehendes helles Pärchen - die nördliche Komponente ist leicht heller - diesen Doppelstern macht die relativ gleiche hellgelbe Färbung beider Komponenten aus - was diesen Doppelstern noch ausmacht, dass beide hellen Komponenten einen schwachen Begleiter haben
AC: bei 72x blinkt bei der nördlichen A-Komponente südwestlich ein schwacher Lichtpunkt auf, Abstand ordentlich
BD: bei 72x steht bei der südlichen B-Komponente ein schwacher Lichtpunkt nordöstlich, D ist etwas weiter entfernt, als der Abstand AC - ein schickes Quartett

Renou 25 (Ast)

../images/dss/dss2blue_155320.00_+333630.00_20_web.jpg
Image source: DSS II (blue) - 20'×20'
Name: Renou 25, Ren25
Type: Ast
Constellation: CrB
Coordinates: 15h53m20.00s / +33°36'30.00"
Brightness / Size: - / 8.0'×8.0'
René Merting
B 18x70, SQM-L 21.3
zu erkennen ist ein kompaktes Dreieck aus Sternen, gebildet von drei schwachen Sternen - die Fläche innerhalb des Dreiecks wirkt leicht aufgehellt 		EASY

sigma CrB (**)
Name: sigma CrB, 17 CrB, STF2032
Type: **
Constellation: CrB
Coordinates: 16h14m40.85s / +33°51'31.00"

Components:
m1 m2 ρ θ Year
AB 5m.6 6m.5 7.2" 240° 2021

../images/binary-star-orbits/STF2032-AB-orbit.jpg

Robert Zebahl
B 16x70, Bortle 6
2021-06-13: Clearly recognizable as a double star with a well visible difference in brightness. It appears clearly as '8' and is close to be separated.
70mm f/5.7, 22x, Bortle 4, SQM-L 20.9
At 22x clearly separated, but very close with a clear difference in brightness. At 57x easy without any noticeable difference in color.
René Merting
100mm f/6.4, 32x, SQM-L 21.0
bei 20x zwei knapp zusammenstehende Sterne mit tiefer Einschnürung - bei 32x dann ein knapp getrenntes Pärchen - B-Komponente südwestlich gut eine halbe Größenklasse schwächer - beide Sterne mit weißem Brautkleid
107mm f/5.6, 30x, SQM-L 21.0
bei 30x zeigt sich B im Westen von A, Helligkeitsunterschied eine halbe Größenklasse, farblich unauffällig - bei 60x dann ein schöner Farbkontrast, A strahlt in einem schönen, sanften Gelb, B im Kontrast Roséweiß
12.5" f/4.5, 72x, SQM-L 21.0
bei 72x ein schick anzusehendes, knapp getrenntes Pärchen - A im Osten ist hellgelb - B ist vielleicht eine halbe Größenklasse schwächer und auch gelblich, aber nicht so stark wie A

STF 1964 & HU 1167 (**)
Name: STF1964 & HU1167, WDS15382+3615
Type: **
Constellation: CrB
Coordinates: 15h38m12.91s / +36°14'48.60"

Components:
m1 m2 ρ θ Year
HU1167 AB 8m.1 9m.9 1.4" 80° 2016
STF1964 AC 8m.1 8m.1 14.5" 90° 2017
STF1964 AD 8m.1 9m.0 15.1" 83° 2018
STF1964 CD 8m.1 9m.0 1.5" 21° 2019

../images/binary-star-orbits/HU1167-AB-orbit.jpg ../images/binary-star-orbits/STF1964-CD-orbit.jpg

Robert Zebahl
B 16x70, Bortle 6
STF1964 (AC): 2021-06-13: Beautiful double star with components of almost equal brightness and subtle color difference: white-bluish & slightly orange.
102mm f/11, 62x
STF1964 (AC): Rather wide pair, equal without visible difference in color.
120mm f/5, 23x, Bortle 6, NELM 5m.0+, SQM-L 19.4
STF1964 (AC): Nice double star, well split with equally bright components.
René Merting
B 18x70, SQM-L 21.0
STF1964 (AC): zu erkennen sind zwei gleich helle, sehr dicht stehende Sterne - Trennung ein wenig mehr als knapp
100mm f/6.4, 20x, SQM-L 21.0
STF1964 (AC): bei 20x ein gut getrenntes Pärchen gleich heller Sterne, auffallend im Sternumfeld
107mm f/5.6, 30x, SQM-L 20.6
STF1964 (AC): bei 30x ein kleines, feines Paar zweier gleich heller Sterne - gleiche Farbe - schöner Anblick zusammen mit STF 1965

STF 1965 (**)
Name: STF1965, zeta CrB, zeta 1/2 CrB, 7 CrB
Type: **
Constellation: CrB
Coordinates: 15h39m22.68s / +36°38'09.00"

Components:
m1 m2 ρ θ Year
5m.0 5m.9 6.4" 306° 2021
Robert Zebahl
B 16x70, Bortle 6
2021-06-14: A slight elongation can be guessed at best.
102mm f/11, 28x
At 28x very tight and barely split, unequal. At 86x very nice view. No difference in color: both components appeared white.
120mm f/5, 48x, Bortle 6, NELM 5m.0+, SQM-L 19.4
Very nice double star, well split with noticeable difference in brightness.
René Merting
100mm f/6.4, 32x, SQM-L 21.0
bei 32x ein knapp getrenntes deutlich helleres Pärchen als der 27' südwestlich stehende Doppelstern STF1964 - Komponente B ist gut eine Größenklasse schwächer als A - beide Komponenten schmiegen sich meist noch aneinander, aber in guten Momenten sind beide getrennt sichtbar - zurück auf 20x ist ein länglicher Stern erkennbar
107mm f/5.6, 43x, SQM-L 20.6
bei 30x sehe ich zwei ungleiche Sterne mit Einschnürung kurz vor der Trennung - bei 43x zeigt sich ein knapp getrenntes Sternpaar - A schimmert Gelblichweiß, B ist eine Größenklasse schwächer und richtig schön weiß

STF 1967 (**)
Name: STF1967, 8 CrB, gamma CrB
Type: **
Constellation: CrB
Coordinates: 15h42m44.57s / +26°17'44.30"

Components:
m1 m2 ρ θ Year
4m.0 5m.6 0.5" 110° 2015

../images/binary-star-orbits/STF1967-orbit.jpg

Robert Zebahl
152mm f/8, 300x
2021-07-23: Gamma CrB was only a few degrees above the house roof and the refractor was insufficiently cooled down. In no way visible as a double star. I used magnifications from 200x to 400x.

STF 1973 (**)
Name: STF1973
Type: **
Constellation: CrB
Coordinates: 15h46m24.50s / +36°26'45.60"

Components:
m1 m2 ρ θ Year
7m.6 8m.8 30.6" 321° 2021
Robert Zebahl
120mm f/5, 23x, Bortle 6, NELM 5m.0+, SQM-L 19.4
Nice double star, easy to split with noticeable difference in brightness.
René Merting
B 18x70, SQM-L 21.0
ein gut getrenntes Sternpaar - Komponente A im Südosten ist doppelt so hell wie B - ganz leichter Farbkontrast
100mm f/6.4, 20x, SQM-L 21.0
bei 20x sind beide Sterne gut getrennt erkennbar - schöner Farbkontrast zwischen beiden ungleich hellen Sternen
107mm f/5.6, 30x, SQM-L 20.6
bei 30x sind zwei schwache Sternchen gut getrennt erkennbar - leichter Farbkontrast, A wirkt leicht Cremegelb, B ist eher Weißgrau

STF 2044 (**)
Name: STF2044
Type: **
Constellation: CrB
Coordinates: 16h24m10.41s / +37°02'11.90"

Components:
m1 m2 ρ θ Year
8m.4 8m.8 8.4" 340° 2020
Robert Zebahl
B 16x70, Bortle 6
2021-06-13: Well visible as a double star, although it appears only elongated. The components seem to be similar bright.
René Merting
100mm f/6.4, 32x, SQM-L 21.0
bei 32x stehen die Sterne sehr dicht, aber schon getrennt sichtbar - Komponente B nordöstlich strahlt nur etwas schwächer, schätzungsweise eine halbe Größenklasse

STT 305 (**)
Name: STT305
Type: **
Constellation: CrB
Coordinates: 16h11m39.60s / +33°20'33.80"

Components:
m1 m2 ρ θ Year
AB 6m.4 10m.2 5.7" 263° 2017
AC 6m.4 13m.0 27.8" 264° 1847
René Merting
107mm f/5.6, 86x, SQM-L 21.0
bei 86x zeigt sich B äußerst schwach sehr knapp getrennt westlich von A - A treibt B im Okular förmlich vor sich her - Helligkeitsunterschied riesig
12.5" f/4.5, 144x, SQM-L 21.0
bei 144x ist B hauchzart westlich neben der intensiv gelblich strahlenden A-Komponente erkennbar - Helligkeitsunterschied … riesig bzw. nicht abschätzbar - es hat ein wenig gedauert, bis ich B entdeckt habe, dann aber war es relativ leicht

V CrB (C*)
Name: V CrB
Type: *, V*, C*
Constellation: CrB
Coordinates: 15h49m31.31s / +39°34'17.89"
Brightness: 6m.9 - 12m.6 (357.63d)
Robert Zebahl
120mm f/5, 48x, Bortle 6, NELM 5m.0+, SQM-L 19.4
2018-05-22: Visual brightness estimated at 10.2 mag. At 23x faint, appeared deeply orange to red colored. At 48x very nice view, crimson colored. 		RED COLORED

X CrB (*)
Name: X CrB
Type: *, V*
Constellation: CrB
Coordinates: 15h48m53.53s / +36°14'52.59"
Brightness: 8m.5 - 14m.2 (241.17d)
René Merting
107mm f/5.6, 60x, SQM-L 20.6
24.05.2023: bei 60x ist auf den ersten Blick nichts Auffälliges zu erkennen, im Vergleich mit anderen Sternenwird dann aber doch deutlich, dass der Stern eine andere Tönung hat - je länger ich mir den Stern anschaue, desto besser kann ich die Färbung erkennen, die eine sanften, hellen Roséorange nahe kommt 		ORANGE COLORED