Object Name: júpiter.
Object Type: Planet.
Location: Pergamino, Buenos Aires, Argentina.
Date 05/12/2014, 05:09am.
Media: White paper, pencil and photoshop to invert colors and make minor tweaks.
Equipment used for the drawing: Helios 114/900 (reflector).
Ocular: Huygens 10mm.
The (Planet) Jupiter is one of the most difficult objects to observe. lt has most delicate subtle figures on surface atmosphere. Speak frankly my 13″ og showed me nothing but two main belts and 3-4 minor belts since first light the fall 2013 that not ones to surpass 12″, 8″, 6″, or 5″ED or 8″ dob at least in detail performance. Tonight’ early morning It showed me countless wrinkles on the King’s face though just at the 5-6 number of times one time was only shortest moments 2-3 seconds for 10 minutes with rated 9/10 seeing. The other interesting features were as you see , on the nights last autumn just near the first light night, the Europa’s color was turkish blue gray, but on this night it was pale yellow, the surface color of Europa really changed after one year ? The optical train was(is) same; flat-og-tv bino- tv nagler 7sThe ….. 13″ OG showed Ganymede’s contact moment with Jupiter’s limb, because the 13″ achromat’s chromatic dispersion effect of light produced weak contrast, could not identifyed the exact situation of the contact moment. For 10 minutes Ganymede moved 5280kmx0.7=3696km, the projected velocity of Ganymede is calculated as 3696km/ 600s= 6.16km/every second. # l usually write the observing date till fully to dawn as the same day .
Why did the GRS get lighter and smaller after 1975?
As you see under my sketch, the GRS was brickred before a white spot became in
and passed the GRS on 9. nov. -75.
The GRS had allways a brick-red color before this happened, and since then, it
has been light red, orange or yellow!
The GRS was very easy to see on the disc of the planet before that!
Can anyone tell what happened?
I used color – pencils on black paper.
Loc.: Trondheim, Norway.
Object Name– Venus, Jupiter Object Type Conjunction of planets Location Pesaro, Italy Date 18th August 2014
I woke up early at 5:00 o’clock to take a look at this marvelous conjunction. It was still night at the time and I was surprised with a mighty view of the rising Orion. I waited on my balcony for until the planets were visible over the roofs in front me. I quickly took my pencil and drew what I saw on the eyepiece of telescope, but the seeing was awful and just two moons were visible. The view of this two small lights dancing together over the roof in the cold morning was much more intriguing, so I tried to sketch the whole landscape. Never tried this kind of astronomy sketch before, probably my first landscape since I was a child.
Jupiter was almost directly at zenith and very bright. It was also located directly atop the star Gemini Delta. I could spot all four Galilean moons easily through my binoculars. Towards the end of this sketch, a heavy mist/fog rolled in, diffusing my view…
Object: Jupiter in constellation Gemini
Date: December 4th, 2013 – 4:30 – 5am CT
Location: New Braunfels, Texas – front yard
Conditions: 54°F, misty/fog
Instruments: 10×50 Wide-Angle Binoculars
Medium: Graphite on white sketch paper, inverted
(see the original sketch)
Orientation: eyepiece view, no image flipping
Conditions: Lot of humidity, 3°C, no wind.
– Dobson Orion XT12 (305 x 1500mm => F/D 5)
– Eyepiece Panoptic 15mm + barlow x 3 Televue (mag x 300)
After a heavy rain, the sky suddenly went cristal clear. So I took my Dobson to a dark lane.
After having a long M82 supernova contemplation, I payed attention to Jupiter.
Its moons were in a rare configuration: all on the same side, but forming a trapeze instead of a line.
From left to right: Io, Callisto, Ganymede, Europa.
I was surprised by the amazing sky quality, seeing perfectly the Great Red Spot and some detail on tropical strips.
I saw an unusual white wave on the right side of the GRS I wanted to keep in memory by doing this sketch.
I could not establish if it was a continuous stream (as I draw it) or a suite of white storm clouds.
I did not find recent picture of Jupiter to confirm.
If somebody observed this, or made a picture at the same period, thanks for leaving a comment.
Thanks for your interest.
APAM astro club