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iPhone Imaging: Lunar Craters Copernicus & Tycho Rays

Posted: 22 November 2018

Cloudy skies and wind returned on Wednesday, 21 November 2018, during the day but went away by sunset.

Open: Wednesday, 21 November 2018, 1816 MST
Temperature: 70°F
Session: 1308
Conditions: Mostly clear

Equipment Used:
12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
2" 30mm eyepiece
2" 9mm 100° eyepiece

iPhone 8 Plus

1821 MST: LX600 ON, StarLock OFF, High Precision OFF.

Viewed Saturn and its moon Titan, low in the southwest, 102X. Then viewed Mars, 102X. Seeing was not great.

1837 MST: viewed the waxing Moon, 102X and 81X. A slight terminator was visible.

Mounted the iPhone 8 Plus on the 30mm eyepiece using the Levenhuk adapter. Took this afocal 81X photo of the Moon with NightCap Camera (ISO 22, 1/4400sec):


Next, did some lunar observing, 271X. The ray patterns from the craters Copernicus and Tycho looked fascinating. Decided to image them with the iPhone. Mounted the iPhone on the 9mm eyepiece with the Levenhuk adapter. Here are Copernicus (ISO 22, 1/1500sec) and Tycho (ISO 22, 1/1800sec), afocal 271X:

Crater Copernicus

Crater Tycho

1853 MST: the clouds began increasing.

1913 MST: the clouds were now more extensive. Decided to end the session.

1914 MST: LX600 OFF.

Close: Wednesday, 21 November 2018, 1923 MST
Temperature: 60°F
Session Length: 1h 07m
Conditions: Partly cloudy

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