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Saturn 2019-08-01 IR 642nm BP & RGB images

Acquisition type: Lucky imaging

Technical card

Resolution: 2000x1334

Date:Aug. 1, 2019

Time: 12:26

Frames: 160000

FPS: 50.00000

Focal length: 9775

Seeing: 4

Transparency: 9

Locations: Home property, Wattle Flat, NSW, Australia

Data source: Backyard


I had beautiful conditions for these captures of Saturn. Firstly I made 5 x 90 sec runs with the IR 642nm BP filter and then went on to do 15 x 90 sec RGB runs. The seeing was very good and so good detail is visible in both images, with the IR image, as usual, having the better definition of atmospheric activity.
The time stamp of the IR image was 12:04UT versus 12:49UT for the RGB image. The storm cells in the North Polar Region (NPR) are well resolved and the most prominent can be seen to have rotated towards the Central Meridian in the 45 minutes between the two captures. The hexagonal polar vortex is also very well resolved and you can see that the storm I mentioned is below a "flat" for the hexagon and that too has rotated from one image to the next.
Like Fábio, I've used somewhat stylised writing to indicate which image is which, as if you would need to know :-). Imitation is the sincerest form of flattery and I like the appearance in his beautiful images.



Niall MacNeill
License: None (All rights reserved)


Saturn 2019-08-01 IR 642nm BP & RGB images, 


            Niall MacNeill