BU 105 (**)
|
| Name: |
BU105, kappa Leo, 1 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
09h24m39.28s / +26°10'56.80" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
4m6 |
9m7 |
2.0" |
209° |
2015 |
|
AC |
4m6 |
11m1 |
147.7" |
212° |
2015 |
|
| Robert Zebahl |
152mm f/5.9, 300x, Bortle 6-, SQM-L 19.2, Seeing 2-3/5
AB: 2020-04-22: The seeing (2-3/5) was not good enough. The diffraction disk was reasonably well visible, but the diffraction rings smudged. No split.
|
|
152mm f/5.9, 300x, Bortle 6, SQM-L 19.4, Seeing 3/5
AB: 2020-04-24: Seeing was mediocre (3/5). The faint companion was partly seen as a distinct brightening in the first diffraction ring of the primary component. Not at all easy. Steady air necessary.
|
|
|
HJ 467 (**)
|
| Name: |
HJ467 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
09h33m47.51s / +26°21'27.30" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
10m0 |
11m0 |
8.8" |
277° |
2015 |
|
| Robert Zebahl |
152mm f/5.9, 129x, Bortle 6-, SQM-L 19.2, Seeing 2-3/5
2020-04-23: Split with visible difference in brightness. Unspectacular.
|
|
|
HU 1338 & STF1448 (**)
|
| Name: |
HU1338 & STF1448, WDS10344+2136 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h34m23.24s / +21°35'36.40" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
| HU1338 |
AB |
7m5 |
13m6 |
3.5" |
184° |
1920 |
| STF1448 |
AC |
7m5 |
9m6 |
10.9" |
259° |
2011 |
|
| Robert Zebahl |
70mm f/5.7, 44x, Bortle 6
STF1448 (AC): 2020-04-10: Moderate separation, significant difference in brightness. A shows a beautiful bright orange, C as a faint greyish companion.
|
|
|
S 617 (**)
|
| Name: |
S617 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h53m24.96s / -02°15'18.80" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
6m2 |
8m7 |
35.2" |
179° |
2017 |
|
| Robert Zebahl |
70mm f/5.7, 22x, Seeing 3-4/5
2020-03-31: Clearly separated with distinct difference in brightness. Color wise unremarkable. Nearby there is a brighter star.
|
|
|
STF 1399 (**)
|
| Name: |
STF1399 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
09h57m02.21s / +19°45'44.60" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
7m7 |
8m4 |
30.2" |
176° |
2017 |
|
| Robert Zebahl |
70mm f/5.7, 22x
Easy to split with nice distance and obviously unequal. A conspicuous group of fainter stars is nearby. Main component appeared in a warm-white, fainter somehow darker (partly bluish, partly slightly orange).
|
|
|
STF 1424 (**)
|
| Name: |
STF1424, gamma Leo, 41 Leo, Algieba |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h19m58.35s / +19°50'29.40" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
2m4 |
3m6 |
4.9" |
126° |
2019 |
|
|
|
|
|
|
|
| Robert Zebahl |
55mm f/9.1, 38x, Bortle 6-, SQM-L 19.1
At 38x split, but very tight with noticeable difference in brightness. At 56x and higher beautiful view of both components, which seemed to have similar colors.
|
|
55mm f/9.1, 59x, Bortle 6, SQM-L 19.5
Very nice unequal double. A appeared yellow-orange, B rather white-bluish.
|
|
70mm f/5.7, 100x, Bortle 6-
At 67x still a relatively close pair, but well separated with quite a clear difference in brightness. At 100x easy to separate and visible color difference: A yellowish to slightly orange, B white-yellowish.
|
|
102mm f/11, 125x, Bortle 7, SQM-L 18.8, Seeing 3/5
Very nicely separated with wonderful contrast in brightness and color. Primary component slightly orange, companion yellowish.
|
|
120mm f/5, 66x, Bortle 6-, SQM-L 19.1
At 48x easily seen as double star. It appeared as '8'. At 66x pretty tight with visible difference in brightness.
|
|
|
STF 1426 (**)
|
| Name: |
STF1426 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h20m32.32s / +06°25'47.60" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB-C |
7m3 |
9m4 |
7.6" |
9° |
2018 |
|
AB |
8m0 |
8m3 |
0.9" |
313° |
2018 |
|
|
|
|
|
|
|
| Robert Zebahl |
102mm f/11, 160x, Bortle 6-
AB-C: Quite large angular distance and therefor easy to separate. The C component was pretty faint.
|
|
102mm f/11, 160x, Bortle 6-
AB: At first glance elongated, on closer look visible as '8'.
|
|
|
STF 1431 (**)
|
| Name: |
STF1431 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h25m35.12s / +08°46'35.40" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
7m8 |
9m1 |
3.6" |
76° |
2019 |
|
| Robert Zebahl |
70mm f/5.7, 67x
Separable at 67x, but very close together with a clear difference in brightness. Easy to separate at 100x. Next to it the star 44 Leo shines in a striking, bright orange.
|
|
|
STF 1447 (**)
|
| Name: |
STF1447 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h33m47.28s / +23°21'02.40" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
7m5 |
8m9 |
4.6" |
124° |
2019 |
|
| Robert Zebahl |
70mm f/5.7, 67x, Bortle 6
2020-04-10: With 44x very tight, uneven pair. The primary component appears whitish with a very faint companion. At 67x the faint companion is clearly visible, but still standing close to the primary component.
|
|
|
STF 1450 (**)
|
| Name: |
STF1450, 49 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h35m02.16s / +08°39'01.60" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
5m8 |
7m9 |
2.2" |
156° |
2017 |
|
| Robert Zebahl |
70mm f/5.7, 133x
B component appeared as clear brightening on the first diffraction ring of the primary component in the correct position angle.
|
|
|
STF 1487 (**)
|
| Name: |
STF1487, 54 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h55m36.80s / +24°44'59.00" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
4m5 |
6m3 |
6.8" |
112° |
2019 |
|
| Robert Zebahl |
55mm f/9.1, 27x
At 27x split, but very tight with noticeable difference in brightness. At 71x easy to separate. No visible color difference.
|
|
|
STF 1504 (**)
|
| Name: |
STF1504 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h03m58.93s / +03°38'19.30" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
7m9 |
8m1 |
1.2" |
126° |
2018 |
|
| Robert Zebahl |
70mm f/5.7, 133x, Seeing 3-4/5
2020-03-31: The double star might have appeared slightly elongated. But observation is too uncertain.
|
|
102mm f/11, 160x, Bortle 6, SQM-L 19.1, Seeing 4/5
2020-03-28: At 125x clearly visible as figure '8'. Both components appeared similarly bright. At 160x and 187x the diffraction disks were touching each other slightly.
|
|
|
STF 1517 & BU1431 (**)
|
| Name: |
STF1517 & BU1431, WDS11137+2008 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h13m40.99s / +20°07'43.30" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
| STF1517 |
AB |
7m5 |
8m0 |
0.7" |
314° |
2017 |
| BU1431 |
AB-C |
7m5 |
10m8 |
246.1" |
97° |
2015 |
|
|
|
|
|
|
|
| Robert Zebahl |
102mm f/11, 187x, Bortle 6, SQM-L 19.1, Seeing 4/5
STF1517 (AB): 2020-03-28: At 187x the double star immediately appears elongated, but without notching. On closer observation, the slight difference in brightness could be detected. Not better at higher magnifications. Observation at quite good seeing (4/5).
|
|
152mm f/5.9, 225x, Bortle 7, SQM-L 18.8, Seeing 3/5
STF1517 (AB): 2020-03-27: Clearly elongated. In some moments the double star appeared notched with a small difference in brightness. Observation at moderate seeing (3/5).
|
|
|
STF 1521 (**)
|
| Name: |
STF1521 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h15m20.95s / +27°34'15.60" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
7m7 |
8m1 |
3.8" |
97° |
2019 |
|
| Robert Zebahl |
70mm f/5.7, 67x, Bortle 6-, NELM 5m0, SQM-L 19.1
At 44x still very close, finely separated pair with visible difference in brightness, rather faint. At 67x nicely separated, at 100x very easy. Colors were not clearly visible.
|
|
|
STF 1536 (**)
|
| Name: |
STF1536, iota Leo, 78 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h23m55.37s / +10°31'46.90" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
4m1 |
6m7 |
2.2" |
96° |
2018 |
|
AB-C |
4m1 |
11m1 |
332.1" |
346° |
2015 |
|
|
|
|
|
|
|
| Robert Zebahl |
70mm f/5.7, 133x, Bortle 6, SQM-L 19.1, Seeing 4/5
AB: 2020-03-28: The companion was well visible as brightening on the diffraction ring of the primary component. Sketch see observation with my 102mm refractor.
|
|
102mm f/11, 125x, Bortle 6, SQM-L 19.1, Seeing 4/5
AB: 2020-03-28: At 125x clearly separated. A very beautiful sight! The companion was visible as almost round brightening close to the first diffraction ring of the primary component. The diffraction ring itself appeared very fine. At 224x also a very nice sight with a clear diffraction ring and the companion, which now appeared roundish.
|
|
|
STF 1537 (**)
|
| Name: |
STF1537 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h24m28.94s / +20°37'16.50" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
8m2 |
9m1 |
2.3" |
358° |
2019 |
|
| Robert Zebahl |
102mm f/11, Bortle 7, SQM-L 18.8, Seeing 3/5
2020-03-27: At 62x almost, at 86x clearly separated, whereby the components are still very close together. The companion appears rather dim. The slight difference in brightness is already visible at 62x. At 125x the double star shows itself clearly separated. The primary component appears more white, the companion appears a bit warmer in color.
|
|
152mm f/5.9, Bortle 7, SQM-L 18.8, Seeing 3/5
2020-03-27: At 49x the double star presents itself clearly elongated, at 69x it is almost separable. The two diffraction disks are well visible. At 100x very nicely separated at still quite small separation. The primary component appears rather white, the companion shows up in a warmer hue. A moderate difference in brightness is visible.
|
|
|
STF 1540 (**)
|
| Name: |
STF1540, 83 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h26m45.32s / +03°00'47.20" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m5 |
7m5 |
28.4" |
150° |
2018 |
|
| Robert Zebahl |
55mm f/9.1, 16x, Bortle 6, SQM-L 19.5
Wonderful double with slight color contrast in a very nice field. Together with tau Leo stunning view. Slightly unequal. A appeared white-yellowish, B rather grey-bluish.
|
|
|
STF 1547 (**)
|
| Name: |
STF1547, 88 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h31m44.94s / +14°21'52.20" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m3 |
9m1 |
15.5" |
332° |
2018 |
|
|
|
|
|
|
|
| Robert Zebahl |
55mm f/9.1, 42x, Bortle 6, SQM-L 19.5
Well split with moderate distance. Primary component appeared white-yellowish. Pretty unequal pair.
|
|
|
STF 1552 (**)
|
| Name: |
STF1552, 90 Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h34m42.50s / +16°47'48.90" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AC |
6m3 |
9m8 |
63.4" |
235° |
2018 |
|
AB |
6m3 |
7m3 |
3.1" |
209° |
2018 |
|
| Robert Zebahl |
55mm f/9.1, 42x, Bortle 6, SQM-L 19.5
AB: A and B very tight and unequal. Much fainter component C very wide apart. All components almost in line. Very nice view.
|
|
|
STFA 19 (**)
|
| Name: |
STFA19, 84 Leo, tau Leo |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
11h27m56.23s / +02°51'22.50" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
5m0 |
7m5 |
89.2" |
181° |
2019 |
|
| Robert Zebahl |
55mm f/9.1, 16x, Bortle 6, SQM-L 19.5
Wonderful double with slight color contrast in a very nice field. Together with 83 Leo stunning view. Noticeable unequal. A appeared white-yellowish with a hint of orange, B grey-bluish.
|
|
|
STT 215 (**)
|
| Name: |
STT215 |
| Type: |
** |
| Constellation: |
Leo |
| Coordinates: |
10h16m16.05s / +17°44'24.60" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
|
7m2 |
7m5 |
1.5" |
176° |
2019 |
|
|
|
|
|
|
|
| Robert Zebahl |
70mm f/5.7, 133x
Appeared partly separated, partly as '8'. Brightness seemed to be equal.
|
|
|