Tag Archives: Great Red Spot


Jupiter & 3 Moons

Jupiter with 3 moons Europa, Io, & Ganymede, The GRS (Great Red Spot) was getting ready to go around the Limb, the 4th Moon Callisto was way off the field of view!

The Great Red Spot (GRS) is a persistent anticyclonic storm, 22° south of Jupiter’s equator. observations from Earth establish a minimum storm lifetime of 350 years.

The GRS winds speeds top out at about 400mph.. and is 2 to 3 times the size of the Earth!

I tested out the ZWO 224MC single shot color camera on my 8inch SCT to see what it can do, …Seeing was okay at prime focus, but any magnification you could see the Earth’s atmosphere boiling. so will try to Barlow it up on the next night of stable seeing.

Best Regards,

John Chumack


Jupiter on 04-18-2016

Jove the Gas Giant Planet!
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
It is a giant planet with a mass one-thousandth that of the Sun, but two and a half times that of all the other planets in the Solar System combined.
Basically you can fit all the planets into Jupiter at the same time with lots of room to spare.

Jupiter rotates every 9 hours &  56 minutes, that is roughly a 10 hours day compared to our 24 hour day here on Earth.
It takes Jupiter 11.86 years to orbit the Sun once, compared to 365 days it takes Earth to orbit our Sun once.
Currently it is 442.8 million miles from Earth…this changes constantly as both Earth and Jupiter orbit the Sun.

Jupiter’s Atmosphere is the largest planetary atmosphere in the Solar System.
It is mostly made up of molecular hydrogen and helium in roughly solar proportions; other chemical compounds are present only in small amounts and include methane, ammonia, hydrogen sulfide and water.

You can find Jupiter with just your eyes nearly straight over head around 10:00pm, it will be the brightest thing straight over head, so go out and take a look tonight, you can even see its clouds bands & 4 Galilean moons with a pair of Binoculars or small telescope held steady or placed on a tripod.

I captured this image of Jupiter on 04-18-2016 centered on (17th 10:26pm EST)  02:26 U.T., We finally got a good night of stable seeing 7/10 from my backyard Observatory in Dayton, Ohio. I was able to crank the magnification up a bit, by using the 3x barlow.  I used my 8 inch diameter(old Orange tube C8) SCT telescope, 3x Cemax Barlow & and a QHY5IIL Mono CCD camera, Astronomik RGB Filters, IFW Filter wheel, Registax6 2400 RGB frames stacked & wavelets, MaximDL for RGB Alignment, Adobe CS 2015 final processing.

I’m happy with the cloud top details…considering we don’t get the greatest seeing here in the Midwest!
I did notice that the Great Red Spot is not so Red anymore, more like Salmon colored Spot…but it still was cool to see some detail within the GRS & cloud top details!

To learn more about Jupiter’s Atmosphere take a read about here…

Best Regards,
John Chumack

Jupiter & moon Callisto

Jupiter & Callisto on 11-18-2014…@ 11:30 U.T.
After De-icing the Observatory Dome last evening,..I was hoping the Dome shutter would stay free of ice and snow through morning…and Yeah it did!! Here is Jupiter early this morning! I put on my Arctic -40F Gear this morning to take a crack at Jupiter and its Moon Callisto, the other moons were out of the FOV. The Great Red Spot (GRS) is a persistent anticyclonic storm, 22° south of Jupiter’s equator; observations from Earth establish a minimum storm lifetime between 300 and 400 years. You can see the Great Red Spot(a 400+ mile per hour storm) heading out around the Western Limb.(lower right). The Great Red Spot has been visible on the planet since the Invention of the telescope..over 400 years!

But it never fails, clouds started to plague me right after I got aligned and ready to image around 5:30am, so extreme patience in the brutal cold was the key! Finally got a clear spot long enough to snap off this RGB set around 6:30am!

Captured with the QHY5IIL Mono CCD camera, Optec Intelligent Filter wheel, Astronomiks RGB filters, 2x Barlow, & 10″ SCT scope. Total of 3588 RGB AVI frames stacked in Registax 6. Captured from my backyard observatory in Dayton at 6:30am this morning. BRRRRRR!!!

Best Regards,
John Chumack