2023-10-22
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 jupiter_20231020_IP_00000348_cropped.fits
 jupiter_20231020_IP_00000348_cropped.jpg
 jupiter_20231020_IP_00000348_labeled.jpg
 jupiter_20231020_IP_00000348_labeled.png
 
 

The FITS images are selected for best seeing from several taken at 
Mt. Lemmon near Tucson, Arizona

2023-10-20 00:46:10 Mountain Standard Time   
2023-10-19T23:46:10 UTC

Telescope: ULMT 0.6 meter Ritchie-Chretien 
Camera: ZWO ASI 16200 9576x6388 pixels
Scale: 0.16 arcsec/pixel
Resolution: ~0.2 arcsec
Exposure: 100 milliseconds
Filter: Sloan i' 



Io and Ganymede in transit.  Io is visible on the disk as well as its shadow,
and Ganymede is visible off the disk to the east with its large shadow elongated
where it is cast on the south polar region.

The FITS file is cropped from the original image.  It is otherwise unprocessed.
The jpg and png files are rendered in AstroImageJ with an optimized linear
mapping to grayscale.