Lunar Features at First Quarter
Lunar Craters and Montes
Dunboyne, County Meath, Ireland
Graphite pencils plain paper
This is a sketch I did as part of an assignment for an Astronomy course I am taking for fun. The exercise was to calculate 4 lunar features heights by making accurate sketch observations, measuring the shadows and calculating the height using the distances along with the Earth-Sun-Moon angles. It just happened to be clear at exactly first quarter. I am having trouble sketching a very dark black and new to many of the sketching techniques and making it up as I go along. Is there an extra dark lead past an 8b or should I be looking sketch on black paper? I am also having problems scanning and am taking photos of my sketches? Any help appreciated. Clear Skies! Kevin
find attached a charcoal and pastel sketch of Aristarchus, Herodotus and the famous Vallis Schröteri. I hope you like it.
Object Name: Vallis Schröteri, Aristarchus, Herodotus
Object Type: Lunar Valley and Crater
Location: Germany, Dusseldorf area
Date: 2015-01-02, 1800-1845 CET
Media: chalk pastel pencil and charcoal pencil on black sketching cardbox
Telescope: Martini 10” f/5 Dobsonian
Eyepiece: Skywatcher HR Planetary 5mm
Object Name – Pythagoras
Object Type – Lunar impact crater
Location – Deventer, The Netherands
Date – Januari 3, 2015
Media – White pastel pencil on black paper
So far this winter is terrible for astronomy. Nothing but clouds and rain in the Netherlands… But yesterday evening the skies finally cleared and my 3″ Polarex Unitron was quickly set up in the backyard. Crater Pythagoras on the northeastern limb of the Moon looked particularly nice – like a deep rocky bowl in the lunar surface. Seeing conditions were fair, so I pumped up the magnifcation to a crazy (for a 3″) 200x. It still gave a pleasant and sharp view and sketching was quite comfortable with the crater looking big in the eyepiece.
Pythagoras is a 130km wide impact crater with staggering 5km high terraced walls. The central peaks (I could see two of them) are also pretty huge: 3,5km high! Imagine the panoramic view from the top op one of those mountains….
Sketch made with a pastel pencil on black paper, through a 3″ Polarex Unitron at 200x (Baader 6mm BGO). The image is mirror reversed.
here we go with a chalk/charcoal sketch of lunar crater Maurolycus.
Object Name: Maurolycus
Object Type: Lunar Crater
Location: Germany, Dusseldorf area
Date: 2014-12-28, 1650-1720 CET
Media: chalk pencil and charcoal pencil on black sketching cardbox
Telescope: Martini 10” f/5 truss tube dobsonian
Eyepiece: TS HR Planetary 7mm
This was one of those nights things just fall together. Excellent seeing and light enough from the Moon that I could see the paper well. After finishing my sketch at the eyepiece I went inside to clean it up and was pleasantly surprised that I liked it pretty much the way it was.
110km wide Gassendi Crater showed some excellent roughened floor details with hummocks casting shadows as well as floor rilles illuminated as bright & dark lines. Rima Mersenius is brilliantly lit on the terminator and the bright scarp of Rupes Liebig can be seen at the base of the wall.
Gassendi Crater, Mersenius Rille, Rupes Liebig, Mare Humorum @11.7 days lunation
.12/2/14 2030-2140 HST
12.5″ Portaball, 227x
Canson Black paper and white and black Conte’ Crayon, white charcoal pencil
Photoscape to adjust contrast
Cindy (Thia) Krach
Haleakala Amateur Astronomers
The night on December 6 , 3;00-4;00 am was great to observe the 15day moon.
After study some pdf Taurus-Littrow Valley ,NASA, in web, l looked through the eyepieces and soon l found the position of the 15day lunar shade terminator was wrong and strangely for, l remember the lunar phases on 15day moon were always [East-West]ward apparent, this time it was anomalously [North-South] ward.
l think it was not because by libration definitely but by some unknown force pushed the moon downward against the flat normal orbital plane of moon-earth system. l was so tired that night that l had only one hour observation not enough time to check how the limb shade was changing even l could’nt sketch reasonably well the old China or Korean Taoism like landscape and this magnificent similarly scenery was stretched along the limb almost 350km long and of course my limitation was only 70km span , yes-, l have also experienced the Grand Canyon like scenery once with the 8′ og in Dec 2013, twice was recently with the 13″ og 1.5months ago. Now is a Taoism scene.
in this night I used my TMB 115/805 to observe the moon.
After half an hour (I have started around 19:00 clock) I decided to hold the crater “Thebit” for my log. Partly it has not occurred to me somehow and I took more than an hour before I could go on for fine work. The proportions did not want to go out of hand and the many subtleties difficult to carry auf’s paper today. Everything was pretty numb, pins “dashed” strange and haze-winding soaked the paper so that it rippled.
All in all I am very happy to have seen it. It was a great Show.
Date: 01.November 2014
Object Name: Crater Thebit
Telescope: 115/805 TMB
Eyepiece: 3,5 mm Nagler
Magnification: about 230x
Location: Near Tauberbischofsheim Germany
Last night I made a sketch of Lunar crater Gauss and its surroundings. While archiving the sketch this morning I realised I already sketched this part of the Moon almost a year ago, so I got the idea of a side by side comparison to show the effect of lunation. To my surprise I found out these sketches were made at the exact same lunation: 15.5 days. The difference in lighting therefore had to be caused mainly by the Moon’s libration; the slow wobbling of the Moon in its orbit. A pleasant suprise to find out I sketched this phenomenon totally unintentionally!
Both sketches were made using a 3″ Polarex Unitron refractor at 171x, with a white pastel pencil on black paper. Orientation and size were matched using Photoshop.
Object Name: Gauss
Object Type: Lunar crater, libration
Location: Deventer, The Netherlands
Date: December 8, 2014
Media: white pastel pencil, black paper
It has been cold in Chicagoland and although it was sunny most of the day, high cirrus clouds moved in after sunset to block out all stars fainter than 3rd magnitude. Ice crystals at high altitude generated a colorless halo around the Moon. Not the best conditions for sketching but the first chance in 4 weeks for me. My target for this sketch was the pair of craters at the southern edge of Oceanus Procellarum. Crater Billy (46 km.) with its dark smooth lava covered floor and crater Hansteen (45 km.) with its hilly, irregular floor and terraced walls present contrasting looking craters of similar size and age. Between these craters is a large arrowhead shaped volcanic extrusion feature called Mons Hansteen. This object always looks very bright at or near full Moon.
Black Canson paper, white and black Conte’ pastel pencils, white Pearl eraser, blending stumps
Telescope 13.1” f/6 Dobsonian telescope on an equatorial drive platform at 222x with 9mm eyepiece
Date: 12-04-2014, 02:00 – 03:00 UT
Temperature: -7°C (20° F) mostly cloudy, calm
Seeing: Antoniadi IV (poor)
Colongitude: 54.2 °
Lunation: 11.4 days
Illumination: 92.5 %