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Jupiter-Saturn Conjunction 13' 09"

Posted: 20 December 2020

Open: Saturday, 19 December 2020, 1653 MST
Temperature: 71°F
Session: 1574
Conditions: Clear

12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
2" 9mm 100° eyepiece
2" 2X Powermate

iPhone 11 Pro Max

1657 MST: LX600 ON, StarLock OFF, High Precision OFF.

1659 MST: viewed Jupiter and Saturn, separated by 13' 09", 102. Saturn was faintly visible in the bright sky. Switched to the 2" 9mm 100° eyepiece (271X). Both planets nicely in the same field-of-view (FOV).

1721 MST: sunset.

1728 MST: mounted the D850 DSLR at prime focus + 2" 2X Powermate. Both planets visible in the FOV.

1740 MST: viewed Jupiter and Saturn, 12x50 binoculars.

1751 MST: D850 DSLR image (1/30sec, ISO 1600, slight crop) of Jupiter, the four Galilean Moons, and Saturn, prime focus + 2X Powermate.

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1757 MST: removed the camera and viewed the planets, 271X. Mounted the iPhone 11 Pro Max on the 9mm eyepiece.

1806 MST: iPhone afocal 271X image of Jupiter, the four moons, and Saturn taken with NightCap Camera (ISO 32, 1/10sec, 1X lens).


Went outside of the observatory and took this photo (f/4, 1 second, ISO 2500, FL 62mm, cropped). Jupiter and Saturn are looking down at Cassiopeia Observatory with its big brother Kitt Peak National Observatory in the distance (65 miles away).

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1825 MST: back at the 12" telescope I took this handheld iPhone afocal 102X image of the Moon using NightCap Camera (ISO 32, 1/200sec, 1X lens).


Then viewed Jupiter and Saturn, 102X. Pretty sight.

1843 MST: D850 DSLR photo (f/4, 5 seconds, ISO 1600, FL 70mm) of the southern western sky with the close conjunction of Jupiter and Saturn.


1848 MST: last look at Jupiter and Saturn, 102X.

1849 MST: LX600 OFF.

Close: Saturday, 19 December 2020, 1856 MST
Temperature: 46°F
Session Length: 2h 03m
Conditions: Clear

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