| Date/Time | : | 2003-06-17T02:22:00Z ± T05M --TO-- 2003-06-17T03:13:00Z ± T05M |
| Observer | : | Peter C. Chapin |
| Equipment | : | |
| Location | : |
My plan for the evening was to continue looking at doubles in Her. See 2003-06-16 for information about last night's session.
As with last night, I saw what I felt was an exceptional number of satellites tonight. Most of them were moving from south to north through Her and nearby areas---which, of course, was were I was looking.
| Object | ADS-10424 |
| Name | δ Her |
| Type | star/multiple |
| Constellation | Her |
| Magnitudes | A=3.16 B=8.8 |
| Separations | AB=10.0" |
NOTES
The secondary was quite faint but it was (barely) visible with direct vision. The double was resolved with even the 25mm eyepiece although it was difficult at that magnification. The best view was with the 18mm eyepiece. The seeing didn't support higher magnifications. The primary was white the secondary did not appear to have any color due to its faintness. Overall it was a nice view.
| Object | ADS-10655 |
| Type | star/multiple |
| Position | RA=17h33.8m, DEC=+21d02m (B1950.0) |
| Constellation | Her |
| Magnitudes | A=5.82 B=9.4 |
| Separations | AB=10.5" |
NOTES
This double appeared very similarly to Delta Her except that both the primary and secondary were a bit fainter. The secondary was just glimpseable with direct vision; averted vision was required to see it clearly making the glare from the primary something of an issue. The best view was with the 18mm eyepiece. I was not able to see the secondary at all with either the 12.5mm or 9mm eyepieces. This was also a nice object overall although a bit of a challenge with my instrument.
| Object | ADS-10397 |
| Type | star/multiple |
| Position | RA=17h10.4m, DEC=+49d48m (B1950.0) |
| Constellation | Her |
| Magnitudes | A=6.05 B=9.5 |
| Separations | AB=4.6" (114 degrees) |
NOTES
This was a difficult object due to the faintness of the secondary and its proximity to the primary. I was able to observe the secondary intermittently using the 12.5mm eyepiece and, to a lesser extent, the 18mm eyepiece. I observed a position angle (estimated) of about 100 degrees. I later compared this observation with the information in my reference and found good agreement. I believe this confirms my sighting.