Magyar menüt kérek. Show menu in Hungarian

Tag: Ganymedes

Jupiter 2019-08-19, Ganymede, Io and Europa

Jupiter,, Ganymede, Io and Europa

The blue sky is what it is: my passion. That I start to observ early in the evening to catch something. Anything. So here it is: Jupiter on the still bright sky. HEQ5, N250/1200, TSO ADC, ASI 224MC (cooled), home observatory, mountpusher

2019.08.19. Jupiter europa nappali 2019-08-19-1721 8 pipp g4 ap1 reg1

2019.08.19. Jupiter europa nappali 2019-08-19-1721 8 pipp g4 ap1 reg1

2019.08.19. Jupiter europa nappali 2019-08-19-1724 5 pipp g4 ap1 reg1

2019.08.19. Jupiter europa nappali 2019-08-19-1724 5 pipp g4 ap1 reg1

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jupiter and Ganymede, 2019-08-11

ASI 224MC, TSO ADC, N250/1200, HEQ5, home observatory, mountpusher

(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jupiter and Ganymede 2019-08-04

ASI 224MC, TSO ADC, N250/1200, HEQ5
(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jupiter and Ganymede 2018-07-17

Jupiter, Ganymede

The observing conditions were… weel, usual, ie bad. The usual setup was used to observe Jupiter and the first half of Ganymede’s transit. ASI 224MC, TSO ADC, N250/1200, HEQ5

The gif below is big, be careful if on a metered connection.

 

(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jupiter, Ganymede 2019-07-10

As usual, this is from the balcony observatory, ASI 224MC, TSO ADC, N250/1200, HEQ5. Planet tracking is done by the soapbox project. The seeing had good moments, but the low altitude of the planet and the fact that I have one of Romania’s largest cities underneath is certainly not helping, these beyond the generally shitty astroclimate of the Carpathian Basin. After the many nights I was up at 4AM to capture the planet, it has well passed the opposition by now and its going away from the horizon of my vantage point. It was an interesting collaboration: me sleep-deprived while getting some good views and Jupiter… doing what it’s been doing for billions of years now.

37 individual videos have been recorded and processed for the animation below, from 2019-07-10T18-54Z to 2019-07-10T21-50Z, each video about 3 gigabytes, equal lenght of 90 seconds, and equal gaps between.

(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jupiter – 2015-02-12, that great night

It was a great night. The best seeing and conditions I have ever recorded a planet, to date. And it was when Io cast its shadow onto Ganymede, making the moon go partially dark.

animgif

animgif

before

before

during

during

after

after

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jupiter’s family 2019-05-11

During this morning, Ganymede played hide and seek, emerging from Jupiter’s shadow, just to disappear again, behind Jupiter’s limb. I used my usual planetary setup, ASI 224MC, TS Optics ADC, Barlow, N 250/1200, HEQ5 installed in my  balconic-balcanic improvised observatory. The seeing was, this time, good to very good, with Saturn’s Cassini gap visible on the live view images, and Jupiter GRS also obvious on the live view. It’s mostly not the case, I must add. The moons are Io, Ganymede and Europa. Ganymede was part of the original recording (it was in the ROI selected for the planet), while Io and Europa are composited onto the image.

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jovial Eclipse 2015-03-09, 10

While prepping for the partial solar eclipse (March 20) I filmed another jovial eclipse. I used winjupos* to look for a moon-moon eclipse and foudn that Ganymede is going to cast a shadow onto Europa on ~ 2015-03-09 23:39 UTC. So I set up my equipment to observe and record. Sadly the seeing was below avarage, so not many disk details could be mined out of the images with stacking – the stacked picture looks like a raw from this session -, but the moons danced almost as expected. I found that winjupos is one or two minutes off, but nevermind. Then I used Registax6 to stack the individual videos (22 videos, about 25 GiB) into individual frames. I touched up the pics with IrfanView’s batch processing* (rotation, a bit saturation) then I used PIPP* to center Jupiter, frame the scene and create the gifs. A bit of GIMP* was also used.

Animated, looped. North is upward, East is to the left

Animated, looped. North is upward, East is to the left

The sum of the frames. The gap in Europa's trail is the eclipsed moon

The sum of the frames. The gap in Europa’s trail (left) is the eclipsed moon

20150309_10_jupiter_europa_ganymede_eclipse_tablo_nyers

Vertically shifted sum of all frames. Background noise accumulates and original framing and rotation during post-processing also become obvious

Time in space

Time in space

Before the eclipse

Before the eclipse

Europa fading away, before maximum. During the maximum the moon faded from my view.

Europa fading away, before maximum. During the maximum the moon faded from my view.

Well after the eclipse

Well after the eclipse

*Thanks for coding :)

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jovial Dance 2015-02-12

Jupiter, Io's shadow, Io, Europa, Ganymede

Jupiter, Io’s shadow, Io, Europa, Ganymede

On the night of February the 12th-13th, 2015 I recorded how Jupiter and its moons have danced. I used a 150/750 Newtonian mounted on a motorized EQ3 mount, a 2x barlow, extension tubes (about 15cm) and a 640×480 @8bit webcam (Scopium) (see my setup here).

From 19:28 to 0:36 (local time, UTC+2) I recorded 234 GiB of raw video (93 files between 1 and 3 GiB) trying to emphasize the key events rather than just record at a given speed – making the animation speed up and slow down accordingly.

Individual frames of the animation are each a result of stacking the best 185 frames of each video (Registax 6). These results have been aligned with PIPP then touched up with IrfanView’s batch processor. Since three setups have been used, the resulting frames had to be resized and rotated to match up in the final output.

Due to a minor hardware failure and/or equipment change (adding an extension tube) recording had to be stopped – out of the 84, 6 frames have been generated using recorded data to fill in these gaps (by derotating Jupiter’s disk and manually adding the moons). I also dropped frames so frame numbering is not incremental.

These are the events I captured

  • Io transiting in front of Jupiter, casting a shadow on the disk (solar eclipse on Jupiter) (frames no. 1-10)
  • Io (partially?) occults Europa (frames no. 18, 19)
  • Europa gets behind Jupiter (frame no. 32)
  • Io (partially?) occults Ganymede (around frame no. 64)
  • Part of Ganymede gets into Io’s shadow (solar eclipse on Ganymede) (frame no. 73)
  • Europa comes out from behind Jupiter but it is still invisible. Then comes out of Jupiter’s shadow (end of a solar eclipse on Europa)
Io's shadow on Ganymede (rendered in 2016 from the original data)

Io’s shadow on Ganymede (rendered in 2016 from the original data)

A solar eclipse on Ganymede

A solar eclipse on Ganymede

 

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jól kalibrált monitoron mindegyik számnál elkülönülő árnyalat látszik. Ha mégsem látszanak, akkor a megjelenített képek színhiányosan rajzolódnak ki. A monitort valószínűleg kalibrálni kell.

You should see distinct shades for each number. If those shades are not clearly visible, the displayed pictures will lack accuracy. Your display most likely needs to be calibrated (brightness, gamma, contrast etc.).