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Mu Her (Multiple Star, in Hercules)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: fair
Time: Sun Jun 29 07:20:00 1997 UT Obs. no.: 162
Easy to split this wide pair at 49x; the secondary much dimmer and clearly reddish. Even at 244x, though, I couldn't split the secondary.
Zeta Her (Visual Binary, in Hercules)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: fair
Time: Sun Jun 29 06:50:00 1997 UT Obs. no.: 161
Unable to split at 244x. According to Burnham's the separation was supposed to be 1.6" in 1990; with a 34-year orbital period I'd guess the separation would have closed about halfway towards the minimum value of .4", making the current separation about 1.0", too challenging for my 8-inch (at least in tonight's only so-so seeing, and possibly even under perfect conditions), given the big brightness difference between primary and secondary (m2.8 vs. m5.5).
Delta Her (Sarin) (Multiple Star, in Hercules)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: fair
Time: Sun Jun 29 06:35:00 1997 UT Obs. no.: 160
Easily split, though the companion was faint, at 49x. At 122x the view was better, with the dazzling white primary contrasting with the dim, small secondary. PA was estimated at about 270 (due west, more or less), which agreed nicely with the diagram in Burnham's showing the relative motions of the optical pair since 1865.
Alpha Her (Ras Algethi) (Multiple Star, in Hercules)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: fair
Time: Sun Jun 29 06:35:00 1997 UT Obs. no.: 159
In honor of the new Disney movie (which Linda and I took Julia to on Friday night; GREAT film, btw), I decided to spend some time admiring the sights in Hercules. Working through the descriptions in Burnham's, I started with Alpha Her. It was split at 122x. The color contrast mentioned in the book was apparent, though it was not as obvious as I expected. After more-careful viewing, though, I began to appreciate the subtle beauty of the orange primary and bluish-green secondary.
M13 (Hercules Cluster) (Globular Cluster, in Hercules)
Observer: James Moyer (e-mail: dr.@who.net)
Instrument: 12.5-inch equatorial reflector Location: Buckingham, PA, USA
Light pollution: moderate Transparency: excellent Seeing: good
Time: Wed May 21 03:00:00 1997 UT Obs. no.: 139
This observation was made two days before full moon. At 55x M13 appeared very bright and large with many stars resolved, esp. towards the outskirts of the cluster but also continuing towards the center. The resolved stars gave the distinct impression of being superimposed over (in front of) the unresolved globular's central region. At 205x M13 filled the field of a 7mm Nagler eyepiece with many dozens of stars resolved, tiny pinpoints of light scattered across the entire field. The resolved stars were easily seen with direct vision at both magnifications. This is my very first deep sky observation made with a new NGT-12.5 after completing collimation and star testing.
M13 (Hercules Cluster) (Globular Cluster, in Hercules)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: fair Seeing: fair
Time: Mon Mar 17 12:45:00 1997 UT Obs. no.: 113
My first viewing of M13 with this telescope. At 49x gave the appearance of a big, circular star cluster with an unresolved, condensed glow centered behind it. Best view was at 122x, with some of the central glow being resolved into faint stars.
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