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Double Occultation 15 January 2024

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1 month 2 days ago #112246 by Until_then-Goodnight!
Double Occultation 15 January 2024 was created by Until_then-Goodnight!
Good evening All,

I hope you and your family are keeping well. 

Last Monday (15 January 2024), the skies were clear. So, I decided I do a spot of observing from my front garden. As the garden faces south, Jupiter was well positioned high in the sky. Ahead of setting-up, I checked which of the Jovian Moons would be on show. To my suprise the 'Sky and Telescope' website that provides the information showed that Io and Europa would be blocked by Jupiter at the exact same time...What is more, the Great Red Spot (GRS) would be on show! I figured this must a rare, so I decided I would sketch the event.

Armed with a 2B pencil and some sketching paper I was in position with my f/5 250mm Newtonian Reflector on a Dobsonian Base one hour ahead of the event. I was keen to make several sketches - one before, one during, and one after the occultations. So, at 18:04 UT I made my first sketch. Seeing was not great, so there was little detail observed. That being said, The NEB and SEB were visible, as were the STB and SSTB at 139X. In addition, there were two field stars in the 0.48 ° FOV: TYC 634-519-1, and HIP 10472. 

The second observation started at 19:06 UT - four minutes before the occultation. By this stage, Io was paritialy blocked. The GRS was visible, but appeared somewhat flatter than an hour ago. Also, I observed and recorded a festoon on Jupiter. So, the seeing had improved for sure as part of the NTB and NNTB were visible. By 19:15 UT Io and Europa had gone behind Jupiter - it was a real thrill to whatch them 'disappear'!

Knowing that Eurpoa would exit occultation of Juipter at 21:40UT I went back out to make my final observation and sketch of the evening. The final and third sketch was taken at 21:44 UT. And this was without doubt one of best views of Jupiter I have seen - so many details were visible. For example, the NNTB was much darker in places, and it was a similar story with the SEB. What is more, I could even see a couple of white ovals...incredible stuff.

Taken together, it was a brillinat observing session and I expect it to feature on my list of top observations for 2024.

Many thanks for reading and taking a look.

Clear skies,

Darren.


 
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1 month 2 days ago #112248 by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic Double Occultation 15 January 2024
 
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1 month 2 days ago #112249 by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic Double Occultation 15 January 2024
It seems the size of an image one can upload to the forum has been reduced to 0.1MB. Consequently, it might be difficult to see much detail on my upload.
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1 month 2 days ago #112253 by michael_murphy
Replied by michael_murphy on topic Double Occultation 15 January 2024
Hi Darren,

I have increased the image size to 300Kb. Try that and see if it makes a difference.

Michael.
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1 month 1 day ago #112255 by Until_then-Goodnight!
Replied by Until_then-Goodnight! on topic Double Occultation 15 January 2024
Hi Michael,

Very many thanks for that...I'll give it go over the coming days.

Fair play,

Darren.
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2 weeks 3 days ago #112272 by Neil40
Replied by Neil40 on topic Double Occultation 15 January 2024
Thats so cool. I've always admired astronomers who sketch. I dont think I have the talent for it. Clearly you do.
Very nice.

Neil

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