JUPITER 2021 SEASON

By Christopher Go

All images were taken using a Celestron  C14  mounted on an Astrophysics AP900GTO mount.  A QHY 290M camera was used is these images.    RGB is done using a set of Chroma Technology RGB filters on a Starlight Xpress Motorized filter wheel.  Methane band images are done using a Chroma Methane Band filter (889nm  18nm bandpass).  UV images are done using a Astrodon UV filter.   Amplification is done using an Astrophysics Advance Convertible Barlow working at 2.0X.

Image acquisition was done using  Torsten Edelmann's Firecapture 2.5beta 64bit software.  All images are NORTH UP!     Processing was done using AutoStakkert! and Registax.

These images were taken at Banilad,  Cebu City, Philippines. 

For more information on the names of various belts and zones of Jupiter and the meaning of the abbreviations I use please check the Sky and Telescope Jupiter Observing Guide.

All images of this site are my property.  If you wish to publish it on your site or print, please email me for permission.

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July 29, 2021

Very poor condition today.  We are still getting monsoon winds which brings bad seeing here.

Oval BA is close to the CM.  It has a light orange color.  The NEB and SEB is pale.  Callisto's shadow can be seen on the SEB.  Note the very dark feature in methane band  close to the north pole.

 

July 26, 2021

Condition here had been horrible due to the SW monsoon enhanced by two North Pacific tropical cyclones. Today was my first clear day in weeks but seeing was horrible!

The GRS can be seen setting on these images.   The SEB and NEB are very pale!  A red band seem to be forming on the mid-EZ.

 

July 12, 2021

Weather had been horrible here due to the monsoon.  I had a brief clearing today.  Seeing was good but transparency was poor.  I was not able to finish my session because the sky became overcast.

Note the strange feature forming on the EZs just past the CM.  Will this develop into a disturbance?  Oval BA shows the orange ring.  The SEB and NEB are very pale while the mid-EZ shows a strong reddish band.  I was not able to capture any good methane band because clouds rolled in.

 

June 30, 2021

I had a very exciting imaging run today.  Seeing started prefect but deteriorated during my second RGB run.  The reason for the excitement was an approaching thunderstorm!  As the storm got closer, seeing went downhill!

Oval BA is prominent in these images. The orange ring inside Oval BA is well resolved.  The ring is still very thin unlike the thick red ring a few years ago.  There is a bright cyclonic oval to the NE of Oval BA.  Both the NEB and SEB are very pale.  The NNTZ LRS is prominent at the CM.  Note the red ring is also resolved.

June 28, 2021

Finally had a break in the clouds.  Seeing was variable today but with periods of excellent seeing.

The Oval BA is setting on these images.  Note the cyclonic ovals to it's NE.  In methane band, note the bright band S of the STB.  Note the very methane bright feature on the EZ at the CM.

The NEB and SEB are very pale.  The NNTZ LRS can also be seen.   For the IR image below, I used an IR850 pass filter that came with QHY462C camera.  Note some features resolved in the south pole.

June 25, 2021

Monsoon season is really affecting us here.  I finally had some clearing today.  Unfortunately, condition was variable.

Oval BA can be seen on these images.  It has a light orange color.  The NEB and SEB are very pale.  The EZ still shows a strong reddish haze.  The NNTZ LRS can be seen above.

June 16, 2021

Seeing was good today.

Oval BA can be seen setting on the right.  The SEB shows the turbulence from the GRS.  The NEB is calm and has faded.   The NNTZ LRS can be seen above.  In methane band, some bright streaks can be seen on the EZ.

June 15, 2021

Seeing was good today but I had to cut short my imaging run because of clouds.

The EZ methane bright feature is not as bright as before.  It looks to have dissipated.  It should have been right after the CM.  There seems to be some interesting activity going on the STB associated with some bluish streaks.  Is this the STB Ghost?  The EZ has a strong reddish hue.  The NEB has really faded as it is very pale now.  The SEB also seems to be fading!  Note the wavy feature on the NTBn.

June 14, 2021

Monsoon season has begun here.  It had been rainy for the past weeks.  I was happy that there was a clearing today.  Seeing was variable due to the SW monsoon.

The GRS is well resolved in these images.  Note the dark core and features inside the GRS.  In the methane band, there are some bright features inside the core.  The chimney above the GRS is open again.   The environment around the GRS looks very chaotic. 

The NEB is quiet in this region.   The mid-EZ has a strong reddish hue.  

June 3, 2021

Seeing and transparency was very poor today due to the presence of TS Choi Wan.

The methane band images shows the bright EZ feature setting on the right.  There seems to be two other such features following the original feature.  These feature are still not visible on other wavelengths.   The dark wave band on the NTBn looks interesting.

May 27, 2021

Seeing was average today.  I had only enough time to capture these images as clouds started to roll in.

Oval BA is rising on the left.  Note the wavy appearance of the northern edge of the NTB.  A reddish band seem to be forming on the mid-EZ.  Both the NEB and SEB are pale.

 

May 24, 2021

Condition was average today. There were periods of good seeing.

The most interesting is the methane bright intrusion into the NEBn at the CM. The strange thing is that there is no visible or even IR equivalent of this feature!  The NEB and SEB are both pale!  Note the bluish streaks on the STB.  Is this the STB Ghost or Spectre?  Note the tiny  bright spot on the NEBs.   Will this develop into an outbreak?

May 22, 2021

Seeing was poor today because we had NW winds.  I had to capture a lot of images to get something decent.

Oval BA is rising on the left.   The most interesting feature is in the methane band.  Note the very bright feature on the EZ on the right edge!  Something seems to be brewing there to have such high altitude clouds on the EZ.

 

May 21, 2021

I wasn't expecting much today because we have been having very bad weather here during the last few days.  The sky was clear and seeing was very good.

These images show the GRS and a double transit of Ganymede and Io.    The GRS is very well resolved.  The dark core can be seen while some dark features can be seen inside the GRS.  A white oval on the p side of the GRS is about to enter the GRS Halo.   There is an intense outbreak at the wake of the GRS. 

The NEB is quiet n this region.  It is also very pale. 

May 17, 2021

Condition was close to perfect today.  Seeing was great but transparency was a bit variable. 

This might be the "boring" side of Jupiter but there are a lot of interesting activity.  Note the wavy band on the northern edge of the NTB.   White Spot Z on the NEBn is very prominent and this spot seem to be brightening on the methane band.  Note the dark red barges on the NEB.  The activity on the STB also looks interesting.

May 15, 2021

Another day of frustrating conditions.  Again I had to image through clouds and transparency was so poor that gain was hovering around 50db!

Oval BA can be seen to the left of the CM.  It has a very light orange shade.  Note the large cyclone white oval to the NE of Oval BA.  There is also another cyclonic oval on the SW side.  The reddish shade of the EZ is very intense!  The NEB is very pale and quiet.  There are no outbreaks or rifting.

 

May 14, 2021

I had to image though clouds today.  If it wasn't for the GRS, I would have gone back to bed.  Transparency was very poor but seeing was ok.  

The area around the GRS is very active.    Note the "flake" on the NW of the GRS.  There is also a dark band inside the GRS.  The wake of the GRS looks very active.  Note the dark band on the edge of the GRS halo especially on the W side of the GRS.

Io can be seen NE of the GRS on the EZ.  The NEB is very pale.

 

May 12, 2021

April and May is suppose to be the best time for imaging planets here in Cebu.  This is our dry season.  But this year we have a very wet dry season.  I have finally been able to get some decent images of Jupiter.   Seeing was excellent but transparency was very poor as I had to image though clouds!

Both the NEB and the SEB are very pale in this season.  It is very interesting to see the dark ovals on the mid NEB and the white oval on the NEBn.  There seems to be an outbreak on the NEBs at the CM.   Note the WSZ is bright in methane band!  The EZ has the reddish hue.

May 6, 2021

Condition was variable today.  When I started imaging seeing was unstable but improved as Jupiter got higher in the sky.  Transparency was poor due to a thin haze.

Oval BA can be seen setting on the right.  Note the bright white spot on the CM following Oval BA.   Note that the band west of this bright shop show a light reddish color.  The SEB shows the chaotic "wakes" from the GRS.  Overall the SEB looks very pale.  The NEB is also very pale while the mid-EZ shows a reddish haze.  The South Polar Red Spot can also be seen rising below.

Note White Spot Z on the NEBn just past the CM.  This oval is brighter than the surrounding NEB in Methane band.  Note the small bright white spot embedded on the northern half of WSZ.  Is this the core of WSZ or is this another spot?

May 2, 2021

Condition was terrible morning.  Seeing was unstable due to N winds and haze and clouds caused low transparency.

These images show the GRS.  The eastern side of the GRS is dark.  There is a reddish feature on the f side of the GRS which is bright in methane band.  Is this a flake remnant?  There seems to be some bright outbreaks on the wake of the GRS but this feature is not bright in methane band.  The NEB is quite and pale.  It would be interesting to see if both the NEB and SEB will fade.

May 1, 2021

Seeing and transparency was good this morning. I am finally able to capture some decent images.

The Oval BA can be seen past the CM.  It is surrounded by some interesting vortices.  There is a large cyclone to its NE.  The SEB is mostly pale except for the turbulence from the GRS on its north edge and the dark band on it's southern edge.   The EZ shows a very reddish hue.  The NEB looks like it is fading.  It is very pale now.  The NTB shows some interesting features which are not visible on methane band.  Maybe these are cyclonic?

April 29, 2021

Condition is a little better today as Jupiter get higher.  Jupiter is still around 40deg above the horizon.   Seeing was below average and transparency was very poor because of clouds and haze.  Transparency was so poor that I was not able to capture a methane band image.  I was, however, able to capture a rare occultation of Callisto by Europa with Ganymede close by.

The NEB looks very pale.   Note what possible is a bright feature on the NEB/EZ border just before the CM.  The EZ has a very strong reddish hue.  The SEB looks very strange with turbulence from the GRS on the SEBn but mostly it is very pale.  The NTBn looks active.  The south polar red spot can be seen just before the CM.

 

April 25, 2021

After a rare April super typhoon, I finally had a clearing.   Unfortunately seeing and transparency was poor.

The GRS is setting on the right.   The NEB and SEB are very pale.  Note the reddish hue of the EZ.  The NTB has a distinct red band.

 

April 13, 2021

I finally had clear skies and better seeing conditions.  Jupiter is still very low in the sky at less than 40deg.  This is the calm before the storm because we have an in coming tropical system.

The GRS is setting on this image.  There are some outbreaks on the wake of the GRS.  The GRS halo is very dark.  The SEB following the GRS looks very pale.  The EZ has a strong reddish hue over it's normally yellow color.  The NEB is quiet and pale in this region.  There are no outbreaks on the NEB!  Is the NEB fading?  Note the dark band over the NTB with its wavy feature.

April 3, 2021

Happy Easter!  Condition was poor today because of Jupiter's low altitude and a NW wind which is opposite from a laminar flow.  Seeing was very bad while transparency was poor due to thin clouds and haze.

These images show a very rare equatorial transit of Callisto!    The GRS can be seen.  There are bright outbreaks on the f side of the GRS.  The chimney above the GRS is open.  The EZn has a strong color.  The NEB looks very quiet.

April 2, 2021

I finally had some clear skies today after over a week of clouds due to a low pressure area in our region.  Seeing is still not great because of Jupiter's low altitude.  All images were taken with the QHY290M.  I just have not time to switch to the QHY462C as sunrise was approaching.

Oval BA shows a slight orange color as reported be other imagers.  Note the large cyclone on the NE edge of Oval BA.  The SEB looks very pale.  The NEB is also very quiet in this region.  There are no outbreaks or rifts.  Note the white oval rising on the northern edge of the NEB, is this White Spot Z?  This spot is a little bright in methane band compared to the surrounding NEB.

March 26, 2021

Here are my first images of Jupiter for this season.  Jupiter was only 25 deg above the horizon.  Seeing was not great.  I only used the QHY290M for all these images as I had no time to change camera as it was almost sunrise.

Oval BA can be seen just after the CM.  It is still very pale.  Note the the STB has become dark.  Note the elongated feature NW of Oval BA at the STrZ.  Is this a STrZ disturbance?  The SEB looks very strange.  Except for the reddish bands, the SEB looks very pale.  The EZ has a very strong ochre color.  The NEB looks quiet in this region.  It also has a very dark color. 

Copyright 2021 Christopher Go (chris@cstoneind.com)