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Moon imaging, Bear Face Crater

Posted: 23 February 2021

Open: Monday, 22 February 2021, 1810 MST
Temperature: 77°F
Session: 1600
Conditions: Mostly clear

12" f/8 LX600 w/StarLock
2" 24mm UWA eyepiece
2" 30mm eyepiece
2" 2X Powermate
2" 14mm 100° eyepiece
2" 5.5mm 100° eyepiece

iPhone 11 Pro Max

1814 MST: LX600 ON, StarLock OFF, High Precision OFF.

Viewed the gibbous Moon, 102X, 81X, and 163X.

Using the D850 DSLR with 150-600mm lens I took this (cropped) photo of the Moon (f/8, 1/640sec, ISO 640, FL 600mm).


I then mounted the iPhone 11 Pro Max on the 2" 30mm eyepiece using the Levenhuk adapter for this afocal 81X photo of the Moon taken with NightCap Camera (ISO 32, 1/3000sec, 1X lens).


Added the 2X Powermate for these afocal 163X images of the Moon (1X lens).


I then used the iPhone 2X lens for these afocal images of the Moon.


I did some lunar observing using the 2" 14mm 100° eyepiece (174X). Lovely sights.

I switched to the 2" 5.5mm 100° eyepiece (443X) and did some tours of the lunar surface. Some nice sights. I "discovered" the Bear Face Crater. This is a stack of 2562 video frames taken with the iOS Camera app (slo-mo, 240fps, 1X lens, afocal 443X) showing the "bear face" at the center.

Mouseover or tap on image
Mouseover or tap on image for pointers to the face

The crater is actually Crater Doppelmayer, named for Johann Gabriel Doppelmayer, a German mathematician and astronomer (1671-1750). I couldn't find any reference to anyone mentioning the "bear face" so I guess I get "credit" for the "discovery"!

Next, I viewed the Trapezium star cluster in Orion, 443X. Then viewed M42 (Orion Nebula), 102X.

1912 MST: LX600 OFF.

Close: Monday, 22 February 2021, 1926 MST
Temperature: 59°F
Session Length: 1h 16m
Conditions: Mostly clear

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