16/17 Dra (**)
|
| Name: |
16/17 Dra |
| Type: |
** |
| Constellation: |
Dra |
| Coordinates: |
16h36m13.72s / +52°55'27.80" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
| STFA30, 16/17 Dra |
AC |
5m4 |
5m5 |
90.0" |
193° |
2017 |
| STF2078, 17 Dra |
AB |
5m4 |
6m4 |
3.3" |
104° |
2018 |
|
| Robert Zebahl |
55mm f/9.1, 71x
Grand sight!
|
|
55mm f/9.1, 27x
STFA30 (AC): Rather wide pair with almost equal components. C component appeared slightly yellowish-orange.
|
|
|
STF 2054 (**)
|
| Name: |
STF2054 |
| Type: |
** |
| Constellation: |
Dra |
| Coordinates: |
16h23m47.19s / +61°41'47.00" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
6m2 |
7m1 |
1.0" |
350° |
2018 |
|
| Robert Zebahl |
70mm f/5.7, 133x, Bortle 4, SQM-L 20.9
Not split in any way.
|
|
102mm f/11, 160x, Bortle 6, SQM-L 19.4
Immediately visible as a double star. The diffraction disks overlapped slightly. The difference in brightness was clearly visible. Together with the nearby double star eta Dra in the same field of view, the sight was highly fascinating, as both double stars are very different in their appearance.
|
|
|
STF 2308 (**)
|
| Name: |
STF2308 |
| Type: |
** |
| Constellation: |
Dra |
| Coordinates: |
18h00m09.07s / +80°00'13.70" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
| 40/41 Dra |
AB |
5m7 |
6m0 |
18.7" |
232° |
2018 |
|
AC |
5m7 |
8m3 |
224.7" |
129° |
2015 |
|
|
|
|
|
|
|
| Robert Zebahl |
B 8x44, Bortle 6, SQM-L 19.3
2020-06-27: The pair AB split, but very tight with components of equal brightness. In acute angle far apart the component C was also visible.
|
|
102mm f/11, 28x
Very nice, slightly uneven pair. Components appeared yellowish-white. Beautiful surroundings. On the sketch the components A, B and C are visible.
|
|
|
STF 2323 (**)
|
| Name: |
STF2323, 39 Dra |
| Type: |
** |
| Constellation: |
Dra |
| Coordinates: |
18h23m54.65s / +58°48'02.10" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AC |
5m1 |
8m0 |
89.1" |
19° |
2017 |
|
AB |
5m1 |
8m1 |
3.8" |
348° |
2018 |
|
|
|
|
|
|
|
| Robert Zebahl |
55mm f/9.1, 27x
AC: Pretty wide, unequal pair. Die brighter A component appeared white.
|
|
55mm f/9.1, 71x
AB: Very nice. The B component seemed to be comparable faint as the C component.
|
|
|
STT 312 (**)
|
| Name: |
STT312, eta Dra, 14 Dra |
| Type: |
** |
| Constellation: |
Dra |
| Coordinates: |
16h23m59.51s / +61°30'50.70" |
| Components: |
|
|
m1 |
m2 |
ρ |
θ |
Year |
|
AB |
2m8 |
8m2 |
4.4" |
143° |
2015 |
|
| Robert Zebahl |
70mm f/5.7, 133x, Bortle 4, SQM-L 20.9
Not split in any way.
|
|
102mm f/11, 160x, Bortle 6, SQM-L 19.4
Easy. Very large difference in brightness. The faint companion appeared as a tiny star outside the first diffraction ring of the primary component. Highly recommended, especially with the nearby double star STF 2054!
|
|
|