Solar&Planetary LtE Now for CMO/ISMO in October 2023

Solar & Planetary LtE Now in October 2023

Not every email is necessarily cited in the PDF’s CMO LtE

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LtE in September 2023

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¤••••• Subject: Jupiter 2023-10-31 UT

Received: 1 November 2023, 19:45 JST

Jupiter images on 31 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-30 UT

Received: 31 October 2023, 12:12 JST

Jupiter images on 30 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Venus 2023-10-29 UT

Received: 30 October 2023,11:09 JST

Venus images on 29 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter images, 7th October 2023+Io in B/UV

Received: 29 October 2023,20:36 JST

Hi all,

Here is a long series taken under good to very good seeing, showing the "rear" side of the planet, with WSZ, and the S4TC red spot. Stars in Aries have been observed too, for future photometric calibration :)

As a curiosity, the surface of Io is showing very strong local absorptions in B/UV (it is even not circular anymore in UV). The absorbed zones match with the redder regions of the satellite, visible on the WinJupos simulation.

Regards,

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: Venus 2023-10-28 UT

Received: 29 October 2023,19:45 JST

Venus images on 28 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-28 UT

Received: 29 October 2023,19:43 JST

Jupiter images on 28 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-27 UT

Received: 28 October 2023,13:24 JST

Jupiter images on 27 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-26 UT

Received: 27 October 2023,22:36 JST

Jupiter images on 26 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-25 UT

Received: 26 October 2023,12:56 JST

Jupiter images on 25 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Venus 2023-10-22 UT

Received: 25 October 2023,17:28 JST

Venus images on 22 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: The Future of Exploration

Received: 25 October 2023, 10:28 JST

October 24, 2023

Dear Friends,

Here I am finally, as promised, issuing my very first newsletter!

I have been spent some time recently investigating the Substack platform and am leaning now towards moving over to that platform. It appears it will allow the means to easily engage in dialogue with each other without our email inboxes becoming overwhelmed with emails. And that kind of engagement and dialogue is aligned with my intent to encourage and grow the community of my followers that has developed over the last, oh, 24 years (starting with my first Cassini Captain's Log in 1999), while certain social media platforms disintegrate as we watch. I am very much looking forward to what we could become in the future. So don't be surprised if sometime soon, you receive an invitation to follow me on Substack.

-------------------------------------------------------------------------------------

But in this, my first email newsletter, is an announcement of a fabulous and beautiful new book that is available today!

It is called The Future of Exploration and it contains riveting essays written by an impressive collection of noted explorers, telling their own stories and giving their own insights into the importance of exploration, its deep roots in the human psyche, and what the future of exploration might look like.

Among this group of some 36 explorers, there is Her Deepness, Sylvia Earle, who has devoted her life to studying the ecosystems and lifeforms that lie deep beneath the waves and advocating incessantly for the preservation of Earth's oceans.

There's Bob Ballard, renowned discoverer of the Titanic and explorer of the ocean floor and its topography. It is he whose many seafloor discoveries include hot springs on the ocean floor and the strange ecosystems surrounding them.

No serious compilation of explorers could omit Jane Goodall whose life spent understanding chimpanzees and their societies has made her name synonymous with the plight of primates whose habitats we humans are rapidly destroying and whose persistent, heart-felt advocacy for conservation of those habitats continues to this day.

World-famous Egyptian archaeologist, Zahi Hawass, whose remarkable discoveries include a lost golden city in the Valley of the Kings and the oldest complete mummy ever found, puts in appearance.

So do Louise Leakey, grand-daughter to Louis; Yvon Chouinard, champion entrepreneur of alpine climbing and iconic environmental activist; Dereck Joubert, who, with his wife Beverly, form a couple of world-famous filmmakers, conservationists and explorers. They founded the Big Cats Initiative that today protects big cats across 29 countries.

And many more. Among all these giants, you'll even find an essay by yours truly. And I'd be lying if I said I wasn't over-the-moon proud about that. I lead a charmed existence!

The curators of this collection of essays are no slouches themselves. Terry Garcia has held a slew high-level positions over his extraordinary career in the exploration and protection of the Earth's natural wonders, among them Deputy Administrator of the National Oceanic and Atmospheric Administration (NOAA); Assistant Secretary of Commerce for Oceans and Atmosphere; and Executive VP and Chief Science and Exploration Officer for the National Geographic Society, in which he was responsible for the Society's core mission programs.

And Chris Rainier, who was born into a genealogy that includes a British admiral who sailed the high seas in support of the British empire in the 1700s, is a documentary filmmaker, photographer (he was Ansel Adams’ last photographic assistant), and has led expeditions to all seven continents and the North Pole. His photographs and books are archived in the collections of museums around the world, including New York, Chicago, DC, Australia and Canada.

For more information, here is the website devoted to the book: https://thefutureofexploration.org/

It is truly a remarkable collection, filled with amazing adventures, captivating stories, beautiful images, all printed in one place and on lovely paper.

To order the book -- and I mean it when I say, you won't regret it! -- go to Amazon (of course): tinyurl.com/2p8phbhp

NOTE: None of us have been or will be paid for our essays. All proceeds will go towards the worthy cause of supporting grants to support future exploration.

Best to all of you!

Carolyn Porco

¤••••• Subject: Saturn 2023-10-23 UT

Received: 24 October 2023, 22:26 JST

Saturn images on 23 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: The eye of...

Received: 24 October 2023, 22:13 JST

Hi,

The eye of Jupiter.

The day before yesterday was cloudy and occasionally there was a hole so I could only take one shot with a red filter,
which was a shame because I would have liked to make an RGB shot in these conditions.

Recording is a 2 minute AVI with the C14 and a red filter, so no Winjupos.

For the sake of clarity, I have included a negative image for the first time.

The idea is to be able to see more details, especially in the Great Red Spot.
You can clearly see the higher resolution in the negative image, rotating current with dark cloud structure in the middle.

Regards,

Richard BOSMAN (Enschede,The NETHERLANDS)

¤••••• Subject: Jupiter 2023-10-23 UT

Received: 24 October 2023, 21:57 JST

Jupiter images on 23 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter images, 6th October 2023

Received: 24 October 2023, 04:39 JST

Hi all,

Here are some images taken under very good seeing, with the red spots, Ganymede and Io.

Regards

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: Jupiter 2023-10-21 UT

Received: 22 October 2023, 21:42 JST

Jupiter images on 21 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-20 UT

Received: 22 October 2023, 21:41 JST

Jupiter images on 20 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Saturn, more spots, October 6th 2023

Received: 21 October 2023, 23:05 JST

Hi all,

It's worth making routine IR survey images of Saturn when seeing is not good. There are still things to catch ;)

The high southern spot is visible again. If this is the same, it would be my third detection of it.

Regards,

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: IR Saturn image with spots, September 30th 2023

Received: 21 October 2023, 22:14 JST

Hi all,

Here is just one IR image ; taken under relatively poor seeing, it shows some interesting details (all verified by animating the frames), like a dark spot at +47°, and two equatorial spots, maybe the same that I had observed in CH4 at AstroQueyras last August?

Link to the CH4 image and animation from then:

http://www.astrosurf.com/pellier/S2023-08-12_01-04_CH4_AQ.png
http://www.astrosurf.com/pellier/S2023-08-12_CH4_anim_cp.gif

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: Saturn images, 5-6th September 2023

Received: 21 October 2023, 21:14 JST

Hi all,

Here a some "old" Saturn images from early September.

The IR685 image shows the same white southern spot I was to observe on Sept. 13th (images already sent)

Regards,

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: Jupiter 2023-10-19 UT

Received: 20 October 2023, 15:24 JST

Jupiter images on 19 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-18 UT

Received: 19 October 2023, 15:18 JST

Jupiter images on 18 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter October 4th, 2023, with a NEB eruption.

Received: 18 October 2023, 20:46 JST

Jupiter with a NEB eruption on October 4th. This is a kind of Io transit's lookalike, so much that I had to verify with WinJupos

Seeing degraded in the middle of the seance (for CH4) but recovered after.

Dark Callisto is overseeing the scene.

BA and GRS are visible in CH4 just at the terminator.

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: Jupiter 2023-10-16 UT

Received: 17 October 2023, 18:06 JST

Jupiter images on 16 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-15 UT

Received: 16 October 2023, 15:49 JST

Jupiter images on 15 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Saturn 2023-10-14 UT

Received: 15 October 2023, 18:05 JST

Saturn images on 14 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Neptune 2023-10-14 UT

Received: 15 October 2023, 18:04 JST

Neptune image on 14 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-14 UT

Received: 15 October 2023, 13:59 JST

Jupiter images on 14 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-12 UT

Received: 13 October 2023, 23:40 JST

Jupiter images on 12 October 2023.

Aｄｄｅｄ 14 October 2023

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Venus 2023-10-11 UT

Received: 12 October 2023, 20:05 JST

Venus images on 11 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-11 UT

Received: 12 October 2023, 12:29 JST

Jupiter image on 11 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-10 UT

Received: 11 October 2023, 20:47 JST

Jupiter images on 10 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-09 UT

Received: 10 October 2023, 16:52 JST

Jupiter images on 9 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter images, 14th September 2023

Received: 8 October 2023, 18:18 JST

Hi all,

Here is a series from almost a month ago (I have several sessions to process...)

Showing the area around BA/GRS, before BA lost its outer ring. Inner cream ring is well contrasted in B/UV though.

I did never pay attention to the dark ring visible inside the GRS in methane/Y. It looks to correspond to a blue ring visible on high-res color images.

What is this feature ? Quite curious

Christophe

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤••••• Subject: Jupiter 2023-10-06 UT

Received: 8 October 2023, 17:03 JST

Jupiter images on 7 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-06 UT

Received: 7 October 2023, 18:22 JST

Jupiter images on 6 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Uranus 2023-10-05 UT

Received: 6 October 2023, 21:35 JST

Uranus image on 5 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Jupiter 2023-10-05 UT

Received: 6 October 2023, 19:08 JST

Jupiter images on 5 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Saturn 2023-10-04 UT

Received: 5 October 2023, 20:11 JST

Saturn images on 4 October 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: The colors of Saturn through spectrocopy 2023/09/25

Received: 3 October 2023, 06:43 JST

Hi all,

My setup has a 23µm slit which spans around 5 arc seconds of width on the sky.

With that, it is possible to divide the planet in three regions: the southern hemisphere, the central part (excluding the rings in front of the globe) and the northern latitudes.

My idea was to try to detect the relative color differences of the three regions, especially of the southern hemisphere, which is currently noticeably blue-green in color.

The results correctly detect the relative low response of the S hemisphere in red, hence its "cold" color, as well ad the redness of the northern polar regions.

It also shows that at the current polar tilt and solar angle, the colors of the rings are very close to that of the globe taken as a whole (so they are not white or blue, but yellow/grey). Of course it should have been different during the opposition surge, or during the years of equinoxe.

But please don't ask me to try to take a spectrum of the spokes