Category: White Paper

Two Craters in the Extreme Northern Zone

Philolaus and Anaximenes

Lunar craters Philolaus and Anaximenes
Sketch and Details by Giorgio Bonacorsi

Hello Astronomy Sketchers,all o.k.?

After bad weather i decide to observe and drawing the Moon.The vision is partially clear,humidity and clouds cover the sky and made a sketch was very difficult.But yesterday,the sky was clear and i take my little Vixen vmc 110 klevstov .I observe the north zone and decide to drawing two beautyfull craters:Philolaus and Anaximenes.The execution, at the end, was complicated by the passage of light clouds and humidity.I hope like you .

Clear sky and good sketch for all.
Ciao,Giorgio Bonacorsi.

Site:Pergola,Marche Region,Center Italy.
Date:5-6 of May 2009
Moon phase:Crescent (12,1 days)
Instrument:Klevstov Vixen vmc 110
Eyepiece: 15mm + Barlow (138x)
Seeing:Good, clouds and humidity at the end.
Temperature:Fresh,no wind.

A Rupes and a Rima

Rupes Recta

Rupes Recta and Rima Birt
Sketch and Details by Balázs Benei

Hello,

This is my other sketch, I made it at the beginning of April. Rupes Recta was very easy to observe, it was totally in the field of vision. Rimae Birt was not so easy but I could see it firmly. The seeing was very good at times, I could observ the crater Birt D, which had only 3km (~2miles) diameter. I think this was the end of the definition of my telescope. I made the sketch with graphite pencil.

My equipment: 110/800 (4′) Newtonian reflector, 2x barlow, 10mm eyepiece, 160x magnification.

Yours sincerely
Balázs Benei

Object name: Rupes Recta, Rimae Birt

Object type: Lunar rille, Lunar rimae

Location: Gyöngyös, Hungary

Date: 2009. 04. 04. 17:35 – 18:55 UT

Magnificent Archimedes

Archimedes

Lunar crater Archimedes
Sketch and Details by Krzysztof Jastrzebski (Jarzbi)

Hello.
This is my new charcoal sketch: large lunar impact crater Archimedes.
Object Name:
* Object Type (Moon: Archmiedes crater)
* Location (Skawina City in Poland)
* Date (02 May 2009, 20:00 UTC)
* Equipment: Synta 8” Dob, Eyepice SP10 mm.

Greetings,
Krzysztof Jastrzebski (Jarzbi)

Galactic Windmill

M101

M101, The Pinwheel Galaxy in Ursa Major
Sketch and Details by Janusz Krysiak

Object Name:M 101
Object Type:Galaxy
Location:Pyrnik(Poland)
Date:17.04.2009

medium: pencil, white paper
equipment: Newton 300/1500
magnification: 68x

Hi,

The building which has absorbed most of my time, many observations have
enabled me to draw some conclusions. First of all, the best results
achieved when the galaxy was very high. My requests generally
poorly-visible, the middle of the oval and a little brighter, you can
see two “weak points of light” near each other in the vicinity of the
center, I recommend a look around the chief field of view, found three
“weak points of light” to show the galaxy frame, after a long
observation draws M 101 is a painting, sketch shows roughly what I saw
and I must say that gave me a lot of satisfaction.

Janusz Krysiak

Great Globular

M13

M13, The Great Globular Cluster in Hercules
Sketch and Details by Robert Gudański, commentary by Rich Handy

This beautiful view of M13, the Great Globular Cluster in the constellation Hercules, was rendered by Polish amateur astronomer Robert Gudański. The cluster, some 25,000 light years from Earth, contains hundreds of thousands of stars. It’s been said that the core of M13 is so dense with stars that a planet near the center (assuming a transparent atmosphere), would behold a sky full of bright suns. In fact the sky would perpetually be several times brighter than the full Moon. Not quite the place to be if you like Deep Sky Objects!

M13
Synta 8″ dob
WO UWAN 7
Stepnica, Poland
21.04.2009
Robert Gudański

Ursa Major Triplet

Ursa Major Triplet

M81, M52 and NGC 3077 in Ursa Major
Sketch and Details by Jef De Wit

M81 and M82 are an impressive duo. But a lot of people don’t know that there is a third galaxy in the neighbourhood (NGC 3077, magnitude: 9,8, surface brightness: 13,2). Even in a small telescope (like my 2,75 inch refractor) you can easily see a lot of detail in this trio.

M81 is the biggest and best visible of the three, M82 is a little less bright than M81 and NGC 3077 was only visible with averted vision. Nice are also the differences in form. NGC 3077 is round, M81 is oval (elongated NW-SE) and M82 is oblong (elongated NE-SW). M81 is the only galaxy with a bright nucleus and a big difference in brightness between the core and the outer halo, M 82 has a less difference in brightness and NGC 3077 is uniform, without any detail.

The problem making this sketch was that I couldn’t see the three galaxies at once in the wide angle eyepiece. To see the edge I had to look around the corner. This made it (for me) difficult to position the stars. Normally I limit a sketch to the field of view I can see at once.

Once inside I made some brightness adjustments to the stars and finished the galaxies with the use of a blending stump (at the eyepiece I work with contour lines). After scanning I did some cleaning up with Paint.

I hope you like this “Ursa Major Triplet”.

Clear skies

Jef De Wit

Object Name: M81, M82 and NGC 3077

Object Type: galaxies

Location: Buis-les-Baronnies, France (44°16 north Lat. 5°16 east Long.)

Date and time: 15 April 2009 around 1.15 UT

Equipment: Meade ETX-70 (2,75 inch refractor)

Eyepiece: 7mm Nagler type 6 (FOV 1,6° and magnification 50x)

NELM: 5,7 mag

Medium: graphite pencils HB/2 and 8B, blending stump, printing paper, scanned and inverted, some cleaning up was made with Paint