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Dec 21, 2020 08:47:23   #
alberio Loc: Casa Grande AZ
 
Ballard wrote:
Here are some shots of the conjunction of Jupiter and Saturn from the late afternoon to early evening on December 18th. These where all taken at a 4096mm focal length and using a Canon full Frame DSLR in 4K video in order to stack the frames. With this format both planets just barely fit into the the video frame, however they will be at there closest on December 21st and skies permitting I hope to get some more shots then. The planets are low on the south western horizon just after sunset. Due to there low altitude there a lot of atmospheric distortion which the stacking helps with but can only do so much. There was also a fair amount of atmospheric dispersion (the air acting like a prism splitting out the colors that I could partially correct for my slightly shifting the red and blue channels of the image.
This is the closest conjunction since July 16th 1623 and Jupiter and Saturn won't be this close again until March 15th 2080. Note: the 1623 conjunction was not visible from most northern latitudes due to the conjunctions proximity to sun at the time.

The first shot below was taken at just after 4:30PM in the late afternoon and there was some high cloudiness giving a slightly milky appearance to sky, the contrast was jacked way up to bring out the planets during this daytime shot.

The next shot was taken right at sunset, in this image the high clouds show some redden from the setting sun.

The next shot was taken after it had gotten dark enough to catch the planetary moons. This is actually a composite image made with different exposures for Jupiter, Saturn and there respective moons so that I could bring out the planets and there moons with out blowing out Jupiter and Saturn due to the great difference in brightness of all these objects (download is best to see the moons).
The next sequence shows the images used to create the composite image.
All comments, questions and suggestions are welcome.
Here are some shots of the conjunction of Jupiter ... (show quote)


Once again, with that Big Meade and you're skills, you have won first place.

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Dec 21, 2020 08:54:25   #
alberio Loc: Casa Grande AZ
 
I was wondering if you use a video converter to change Canons video file to avi?

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Dec 21, 2020 10:46:19   #
Earnest Botello Loc: Hockley, Texas
 
Well done, Ballard.

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Dec 21, 2020 11:10:07   #
Ballard Loc: Grass Valley, California
 
PaulBrit wrote:
What great photographs. Beyond my ability in both craft and expense but that doesn’t stop me from admiring your great skills. Fantastic!


Hi PaulBrit
Thanks for checking out the photos and for the comment. Its more a matter of learning new photo processing methods and experimentation than any inherent skill. The right equipment also helps a lot.

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Dec 21, 2020 11:13:11   #
Ballard Loc: Grass Valley, California
 
alberio wrote:
Once again, with that Big Meade and you're skills, you have won first place.


Hi alberio
Thanks for checking out the photos and the comment. The big Meade helped in keeping the exposure short, but the image detail is limited by the seeing with the planets so low in the sky.

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Dec 21, 2020 11:34:32   #
Ballard Loc: Grass Valley, California
 
alberio wrote:
I was wondering if you use a video converter to change Canons video file to avi?


For the sunset and daylight image I used PPP to convert the .mov file to a .ser file and stacked with AutoStakket. However the other night time images I ended up converting the .mov file to a bunch of Jpegs with the cannon movie utility that came with the camera and then stacked with Registax6. In the night time images I could not get Autostakket to keep both planets in the view correctly with either the planet or surface settings (the box for image stabilization anchor could not be set to the edge of the field to include the planets and it would screw up the stack, with the daylight and a bit of clouds it seemed to stack OK however. The trouble with Registax6 is that it is a 32 bit program so I had to limit the images to Jpeg and to >1000 images otherwise it would run out of memory. Perhaps tonight the planets will be close enough to get the surface anchor point to see one of the planets with AutoStakkert assume the clouds stay back which they have not done for the past couple of days.

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Dec 21, 2020 11:35:14   #
Ballard Loc: Grass Valley, California
 
Earnest Botello wrote:
Well done, Ballard.


Hi Earnest Botello
Thanks for checking out the image and for the comment.

Reply
 
 
Dec 21, 2020 12:03:01   #
wthomson Loc: Tempe, Arizona
 
Excellent!!

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Dec 21, 2020 12:07:38   #
Ballard Loc: Grass Valley, California
 
wthomson wrote:
Excellent!!


Hi wthomson
Thanks for checking out the conjunction images and for the comment.

Reply
Dec 21, 2020 12:29:53   #
HondaCL100 Loc: Lakles, FLe Wa
 
WAY cool!

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Dec 21, 2020 12:50:17   #
Ballard Loc: Grass Valley, California
 
HondaCL100 wrote:
WAY cool!


Hi HondaCL100
Thanks for checking out the conjunction image and for the comment.

Reply
 
 
Dec 21, 2020 15:08:03   #
Q-Ball40
 
Hi Ballard,

Outstanding celestial images and impressive knowledge of optics & astronomy.

Thank you for sharing these photos.

Reply
Dec 21, 2020 15:44:42   #
alberio Loc: Casa Grande AZ
 
Ballard, The trouble with Registax6 is that it is a 32 bit program so I had to limit the images to Jpeg and to >1000 images otherwise it would run out of memory. I found that out last night. I'll just hope for the best tonight with ZWO ASI178MC and SharpCap.

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Dec 21, 2020 15:45:12   #
bwana Loc: Bergen, Alberta, Canada
 
Ballard wrote:
Here are some shots of the conjunction of Jupiter and Saturn from the late afternoon to early evening on December 18th. These where all taken at a 4096mm focal length and using a Canon full Frame DSLR in 4K video in order to stack the frames. With this format both planets just barely fit into the the video frame, however they will be at there closest on December 21st and skies permitting I hope to get some more shots then. The planets are low on the south western horizon just after sunset. Due to there low altitude there a lot of atmospheric distortion which the stacking helps with but can only do so much. There was also a fair amount of atmospheric dispersion (the air acting like a prism splitting out the colors that I could partially correct for my slightly shifting the red and blue channels of the image.
This is the closest conjunction since July 16th 1623 and Jupiter and Saturn won't be this close again until March 15th 2080. Note: the 1623 conjunction was not visible from most northern latitudes due to the conjunctions proximity to sun at the time.

The first shot below was taken at just after 4:30PM in the late afternoon and there was some high cloudiness giving a slightly milky appearance to sky, the contrast was jacked way up to bring out the planets during this daytime shot.

The next shot was taken right at sunset, in this image the high clouds show some redden from the setting sun.

The next shot was taken after it had gotten dark enough to catch the planetary moons. This is actually a composite image made with different exposures for Jupiter, Saturn and there respective moons so that I could bring out the planets and there moons with out blowing out Jupiter and Saturn due to the great difference in brightness of all these objects (download is best to see the moons).
The next sequence shows the images used to create the composite image.
All comments, questions and suggestions are welcome.
Here are some shots of the conjunction of Jupiter ... (show quote)

Nicely done and a lot of effort put into the final result!

bwa

Reply
Dec 21, 2020 15:52:34   #
Base_fiddle
 
Very nice, Ballard. I'm going to try and get some shots tonight.
Jose

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