Messier 92 (M 92)
Introduction | Map | Sketch | My
Observations | References
On this page I collect my observations of the globular star cluster M
92 in the constellation Hercules.
The globular star cluster M 92 in the Hercules constellation
is somewhat smaller (depending on the author, it is 7 'or 8' in size) than
its more familiar "brethren" M
13. It is located above the Keystone asterism, the most prominent part
of the constellation More difficult to find than M
13. I was able to clearly
see the bright nucleus - M 92 appears somewhat more concentrated ta the center
than M 13 - but
not dissolve single stars. In my binoculars, M 92 appeared also very small.
Size: 7' / 8' (Stoyan/Karkoschka)
Distance: 25,000 light years (Stoyan)
Rating: *** (Stoyan)
M 92 is located above the Keystone asterism and a little more difficult
to find than M 13. First find the Keystone asterism!
The sketch by Michael Vlasov (DeepSkyWatch.com)
provides a rough impression of what I observed in Summer/Autumn 2016 (my
impression was much fainter and smaller than the sketch):
of the M 92 globular star cluster by Michael Vlasov (Copyright © Michael
Vlasov 2016) - presented with the author's permission
My Own Observations
Observations Summer to Autumn 2016
- End of August 2016 (Mühlhausen/Kraichgau: Heritage
100P, Heritage P130,
and GSD 680): Observed M
92 many times at various magnifications.
- September 1, 2016 (ditto: Heritage
100P), September 7, 2016 (dito: Skymax-102 on GoTo mount),
September 99, 2016 (dito: Heritage P130 on GoTo mount):
Observed M 92 with various telescopes.
- End of September, beginning of October 2016 (Sumène, Haute Loire,
France: Heritage 100P, LT binoculars):
92 at various magnifications and with binoculars.
Observations May 2017
- May 12, 2017 (Mühlhausen/Kraichgau: Explorer
150PDS on GoTo mount): M
92 not found, but M 13...
- May 14, 15, 2017 (ditto): M 92 (gap in balcony)
and further globular star clusters seen well (7 mm; 24/16 mm on May 15),
all somewhat "resolved";
M 13 was the largest cluster
- May 16, 2017 (ditto): M 92 and further globular star
clusters seen well (24/4 mm), all somewhat "resolved"; M 13
was the largest cluster. Probably never seen them that well and large
(4 mm) before …
Observations October 2017
- Oct 2017 (Mühlhausen/Kraichgau:
TS binoculars): M 92 observed with binoculars.
Observations September/October 2018
- Sep 27, 2018 (Sumène, France: PS 72/432, AZ
Pronto Mount): M 92 seen well with PS72 and 4 mm, bright and
small; M 13 ditto, but larger
- Oct 4, 2018 (Betz, France: PS 72/432, AZ
Pronto Mount): M 13 und M 92 in Betz (Orion43) seen very good,
stars partly resolved
Observations August 2019
- Aug 22-23, 2019 (Mühlhausen/Kraichgau: Skymax-127, TS
binoculars , AZ
Pronto Mount): M 92 observed with SM-127 on Aug 23.8
with magnifications of up to150 x. When using the 16 mm and 10 mm eyepieces,
we were able to detect fine stars, particularly with "averted vision".
All in all, M 92 seen very nicely. Much harder to find than M 13,
smaller and probably brighter at the center than M 13.
M 92 also observed with both binoculars for
several times (22.8.), or only with the LT
with binoculars also much harder to find than M 13, but not quite as hard.
On this Site