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			Photo #: STS61A-35-86 Date: Nov. 1985 Geographic Region: CANADA-Q Feature: CLEARWATER LAKES



	STS61A-35-86 Clearwater Lakes, Quebec, Canada November 1985 These twin circular lakes (large dark features) were formed simultaneously by the impact of an asteroidal pair which slammed into the planet approximately 290 million years ago. The lakes are located near the eastern shore of Hudson Bay within the Canadian Shield in a region of generally low relief in northern Quebec province. Notice that the larger western structure contains a ring of islands that surrounds the center of the impact zone. The lakes are named after their exceedingly clear water. Also notice that the surrounding terrain shows widespread scarring from glaciation. The multitude of linear and irregular shaped lakes (dark features) are the result of gouging or scouring action caused by the continental ice sheets that once moved across this area.

Images:	All Available Images Low-Resolution 383k
Mission:	STS61A
Roll - Frame:	35 - 86
Geographical Name:	CANADA-Q
Features:	CLEARWATER LAKES
Center Lat x Lon:	56.0N x 74.5W
Film Exposure:	N	N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP:	0
Camera:	HB
Camera Tilt:	35	LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length:	250
Nadir to Photo Center Direction:	W	The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:	Y	Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:	34
Date:	19851101	YYYYMMDD
Time:	192044	GMT HHMMSS
Nadir Lat:	56.1N	Latitude of suborbital point of spacecraft
Nadir Lon:	72.4W	Longitude of suborbital point of spacecraft
Sun Azimuth:	221	Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude:	183	nautical miles
Sun Elevation:	11	Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:	CRATER, HILL
Water Views:	LAKE
Atmosphere Views:
Man Made Views:
City Views:

Photo is not associated with any sequences

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