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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Jupiter - 17.9.2023 at 23.59 - 18.9.2023 at 00.03 Vantaa, Pähkinärinne Observation number 118752

Visibility II / V

Paula Wirtanen, Ursa (Helsinki)

The weather was almost clear. However, there was a slight haze in the sky and even the bright stars were quite difficult to see. However, now would be the first opportunity this season to see with your own eyes what GRS, i.e. Jupiter's famous red spot, is up to.

Visually, you couldn't tell the details of Jupiter at all, you couldn't even tell the big red spot. However, SEB and NEB appeared to be equally dark, but featureless. At least the spot is not particularly dark yet. Contrary to plans, I didn't do drawing observation at all, because the bad weather was noticeable in the small amount of details.

So, trying to see if you could get a better result with a planetary camera. Desperation really started to strike with the hardware, when you couldn't get a clear result with anything, and on top of that, ASIStudio also decided to use tricks in between tinkering. However, I tried shooting with slightly different exposure and focus settings.

However, I managed to save something. The final result cannot be said to be very brilliant, but the details stand out much more in the photo than when seen visually. However, the size and darkness of the large red dot can be seen in the final result, similarly, light ovals stand out clearly in SEB.

Picture 1 : Jupiter, the moons and Sigma Arietis, which looks like a fake moon that has gone its own way. Combined from two exposures: the moons and the star in the background sky have been brought out by overexposing Jupiter. Then the overexposed Jupiter is replaced by the planet itself from the second exposure. The pictures show the south upwards, i.e. the landscapes as they are seen through the telescope.

Picture 2 : the same picture, with the labeling added.

Figure 3 : Jupiter, treated in a little more detail. You simply couldn't get a better result this time.

Central meridians of Jupiter:
CM I = 284°
CM II = 62°
CM III = 87°

Additional information
  • Observation target
    • Jupiter
Technical information

Sky-Watcer Skymax 127 (Mak127/1500), ZWO ASI224MC, AutoStakkert!3, ASIStudio, MacOS Preview.

Comments: 1 pcs
Mikko Peussa - 18.9.2023 at 11.57 Report this

Ihan nätti kokonaisuus!

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