Altough my previous contributions have been made through my big dobson Obsession 635mm, I propose this time a drawing of an observation with a L 80 Megrez.
NGC 6231:
Object name: NGC 6231
Object type: Open cluster
Constellation: Scorpio
Date of observation:
07 juin 2004 20:08 UT
Length of observation:
32 min
Object position:
Alt: 54.2°, Az: 129.9°
Weather conditions:
Twifeldfountain 20h00: t~12° V0 huns
Observation conditions:
T0 P0 S1/104 ! (on a scale from 0 prefect to 5 very bad)
Observing site:
Namibia
Instrument:
LC 80/500 Megrez II SD
Main eyepiece:
Televue Nagler 7mm Type 2
Barlow:
(None)
Magnification:
71x
Sketch made with pencil on booknote, then final drawing processed with Paint Shop Pro and Starspikes Pro.
My notes are: the cluster is no so huge as NGC 3532, no so colored as NGC 4755, but for me, I’m asking if it isn’t the most beauteful and dramatic cluster allover the sky.
In Namibia, in my Megrez 80, it is rich, brillant, contrasted, with both weak and dazzling stars. At 45° high, I counted beetwen 90 and 100 stars, according to the visual limits, more or less the ones of the Dias catalogue.
And it is also interesting to know that I couldn’t point at more than 55 stars with my TSC Meade LX200 / 254mm from the french southern Alps. But It’s true to precise that, from that place, the cluster reached 4.2° of altitude!
You can have more details at http://www.deepsky-drawings.com/ngc-6231/dsdlang/en
Clear skies
Bertrand, from Marseille / France
Superbe dessin Bertrand qui reflète bien la beauté de ce secteur du ciel!
Bonjour Bertrand, je pense que votre dessin est très précise et riche en détails.
Maurizio
Bertrand,
This one is a stunning beauty, had my best view of it two years back with my daughter Michelle and great obsserving friend, Dale Holt from the UK while down in Arizona.
Great sketching.
Frank
salut Bertrand,
Dessin impressionante!
C’est incroyable ce qu’on peut voir avec un petit réfractuer sous un ciel noir.
Une question: Pourqoui as-tu ajouté des ‘spikes’ si tu utilisait un réfractuer, qui ne montre pas de ‘spikes’?
/Erik
It is amazing sketch!!!
This sketch has many stars about 400~500 white dot using 80mm.
What skill do you use? I want to learn your method 🙂
A great Hodierna cluster, the NGC component of the False Comet in Scorpius, seen together with Zeta Sco. I observed it on a trip to Australia a year ago. Great website too. A very pleasing rendition. But why spikes through a refractor… Oh, I see, Erik above asked that question already.
Beautiful! I’ve loved this cluster ever since I read of the view in Garrett Serviss’ 1888 book, “Astronomy With An Opera-Glass.”