globular – Page 12 – Astronomy Sketch of the Day

Globular Cluster M13 and Galaxy NGC 6207

Messier 13 and NGC 6207
By Mariano Gibaja

Object Name: M 13 and NGC 6027 (Constellation of Hercules)
Object Type: Globular Cluster and Galaxy
Location: Bonilla-Cuenca SPAIN
Date: May 15, 2010
Media: graphite pencil, white paper, inverted GIMP 2
Telescope: SCT 8″
Eyepiece: 31 mm Hyperion-Aspheric
Mag.: 65X

Spanish-English translation using Google Language Tools:
The globular cluster M 13 is my favorite to teach my friends. When my
friends look through the eyepiece you always hear the cry: Ohh! How
beautiful! No doubt this cluster is of the most beautiful and impressive
from the sky. It is located at a distance of 24,000 light years. When I look
at M 13 I never forget the small galaxy NGC 6027. It’s very nice to see a
galaxy and a globular cluster at a time.

Globular Queen of the northern sky

Messier 13
By Robert Twarogal (Ignisdei)

Hi!
I didn’t think that I ever dare to sketch this beautiful queen of the northern sky.
Yesterday at 23.00 the Moon already hung on the horizon, fortunately Hercules was near the zenith.
By observing this globular cluster, at first You will see lots of stars at the center of M13, but by carefully and patiently watching, after some time we even notice them twice, especially on the sides!

I love to look at this wonderful globular cluster in the high magnification, so I used a 17mm wide-angle eyepiece for the telescope’s focal length of 2800mm.

I encourage you to observe this wonderful object in a large power 🙂

Robert

author: Robert Twarogal (Ignisdei)
Object Name: M13 – ”Globular Queen of the northern sky. “
Object Type (globular cluster )
Location (Oborniki, Poland)

Date (29-05-2010)
Equipment: 11″ Schmidt-Cassegrain Telescope + Heq5,
Eyepiece: Sky-Watcher SWA 17mm
Power: 165x!

M56 in Lyra

Messier 56
By Chris Lee

Object Name : M56 in Lyra
Object Type: Globular Cluster
Location Bristol, UK
Date: 18th May

Media Sketch at the scope and transfered into a digital tools package
Had to head out into the countryside to capture this since my backyard rarely reveals any detail of M56 beyond a faint blur. Used a Nexstar 8SE. Even at this location the central region was hazy but I did get a much better impression of the “depth” of this GC.

Thanks for considering this

Chris Lee

“Almost” Globular Cluster

Messier 71
By Ignisdei (Robert Twarogal)

Hi!
In my five-year observation history , there hasn’t been such ugly year. Only rain and clouds over my country. However, yesterday evening, the sky suddenly cleared, after strong rain and appeared so many stars.
At the east horizon hunged Sagitta, (the Arrow). That night I looked inside it.
M71….
I really like this “almost globular cluster” 🙂

Robert!

Object Name: M71….”The almost globular cluster :)”
Object Type (globular cluster )
Location (Oborniki, Poland)

Date (17-05-2010)
Equipment: 11″ Schmidt-Cassegrain Telescope + Heq5, WO SWAN 40mm,

NGC 5286

NGC 5286
Sketch and Details by Scott Mellish

NGC 5286
Globular Cluster
Centaurus
18/03/10
Ilford NSW Australia
56cm f5 Dobsonian telescope
Field: 27′
Magnification: 218x
Sky Quality Meter reading: 21:39

This rather quaint little globular cluster was mostly resolved in the
56cm dob at 218x mag.

The bright orange/yellow tinged star in the field is the spectroscopic
binary M Centauri, a G-type star which lies around 257 ly from Earth,

Both the star and the globular cluster together make for a most pleasing
view.

Scott Mellish.

Globular Cluster M5 and STF 1930

Messier 5 and STF 1930
Sketch and Details by Mariano Gibaja

Object Name: M 5 (NGC5904) and STF 1930 in Serpens constellation.
Object Type: (Globular Cluster/Double Star)
Location: Bonilla (Cuenca) SPAIN
Date: 2010-April-10; UT: 23;30
Medium used: Graphite pencil one white paper. Photoshop:inverted
Equipment used: SCT 8″ (64X)

The observation of this globular cluster is very rewarding. It finds itself
in Serpens’ constellation, approximately 25.000 light years away. M5 and M13
are the two most brilliant globular cluster in the northern hemisphere. It
has a very thick core and it can be observed how ramifications of starts
have their origin in it, the famous ‘spider legs’ that give to the cluster
its elliptical shape. The image of this beautiful cluster is completed with
the star 5 SER, with a magnitude of 5. But actually, if we observe closely
we can see that it is a double star. In this case it is the STF 1930, make
up of the star of magnitude 5 and its partner of magnitude 10, with a
separation of 11,4”.

I have done this draft in the observation area of the Astronomical
Association of Madrid (Agrupación Astronómica de Madrid) in Bonilla, Cuenca.
The weather was good and the temperature was around 3º C.

Do not miss the spectacle that this globular is offering and that will be
with us during the warm summer nights.

Globular Cluster M 79 in Lepus

Messier 79
Sketch and Details by Kiminori Ikebe

M79 (NGC 1904) Difficulty level 2

Date of observation: 1997/11/02 02:10
Observing site: Kuju
Transparency/seeing/sky darkness: 3/3/3
Instruments: 32cm Dobsonian with TPL10.5 at 150x
Width of field: 0.3°

This is a mid-sized bright globular. At 150x it is finely resolved but the central region is not completely resolved. Even at 50x it is relatively well resolved. The level of concentration is rather weak. The bright central region looks pointed in three directions just like a maple leaf. The southeastern side of the center has not such extension but the outline is sharp with four stars shining outside it. A bright star off the northern side stands out. There is a conspicuous line of stars which encircles the edges of the globular and extends further to the south. This line of stars is clearly seen in photographs. This globular is full of interesting characteristics.

Blazing Ball of Diamond-like Stars

Messier 5
Sketch and Details by Michael Geldorp

From: geldorpmh@hotmail.com
To: webmaster@asod.info
Subject: ASOD: “Messier 5”–”Michael Geldorp”.
Date: Sun, 14 Feb 2010 19:04:06 -0700

Submission for ASOD:

Object Name (Messier 5 (NGC 5904))
Object Type (Globular Cluster)
Location (Alphen a/d Rijn, Netherlands)
Date (6/25/1998)

This sketch was made using an 8″ Dobsonian (F/6) at 244X magnification under fairly clear skies. I used pencils of various hardness on quality printer paper. The sketch was then scanned into the computer and inverted white-on-black.

My notes for that night read:
“49X: Easily found. Few stars resolved at this power with one star very obvious in the center.
98X: Partially resolved with a grainy core.
203X: Blazing ball of diamond like stars with a bright star to the SSW.
244X: Fully resolved at 244X. Beautiful sight! Stars are seen right across the cluster including in the core. Large round bright center. Stars appear to form arms radiating outward from the center, almost forming circles around the cluster.”

It was the first sketch (first night out in fact) made using the 8″ Dobsonian telescope.

For more information and other sketches please visit http://milou.blackapplehost.com/Astrohomepage/htmlfiles/index2.html

Michael Geldorp

Big Star’s Carpet

NGC 5139 (Omega Centauri)
Sketch and Details by Laurent Ferrero

Object Name : NGC 5139 (Omega Centauri)
Object Type : globular cluster
Location : Corral del Niño, Tenerife, Canaries islands
Date : april 2009

Magnificient globular cluster which covers a large scale in the eyepiece at 68x. The cluster looks like at big star’s carpet with little dark holes and no central condensation. The global shape of the object is clearly oval. The observation was made with my Intes 6″.

Best regards,

Laurent

47 Tucanae

NGC 104 / 47 Tucanae
Sketch and Details by Scott Mellish

NGC 104/ 47 Tucanae
Globular Cluster
Ilford NSW Australia
17/10/09
56cm f5 Dobsonian Telescope
Field: 17′
Magnification: 354x
Sky Quality Meter reading: 21:78

White pen
Soft white pencil
Hard white pencil
White pastel chalk

I have made numerous attempts at sketching this remarkable globular cluster over the years, mostly in small telescopes at low power where it is just a bright ball. At higher magnification in my 56cm dob it is a vastly different object.

I had a dose of the Flu while I was away observing, but the sky was clear so I spent a solid two hours at the eyepiece sketching this globular, and it nearly done my head in. Every time I looked in the 8mm Ethos there seemed to be more and more stars to add, plus the 100deg FOV of this eyepiece was almost to much to handle.

The following night was clear again so I spent another 40mins just dabbling with the sketch to try and get as accurate eyepiece view as possible.

I have never been 100% satisfied with the sketches I have done previously of NGC 104 and most made the bin. This one however came out fairly good, it is certainly the best I could do with 47 Tuc.

I do not like to overdo eyepiece sketches, especially with size and brightness as one can be tempted to get a bit carried away, and detract from the visual perspective.

There has been no processing done with the sketch.

I do not think I will be doing NGC 104 again any time soon.
Too many stars!

Scott Mellish.