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Database Statistics
Date tabulated: 14 Dec. 2018
Number of missions in catalog: 220

UNIQUE RECORDS (Images Table and Frames Table) This total includes both photos that have images in our database and those that do not.
Total number of photographs taken by astronauts: 3,657,595

ALL IMAGES (Images Table) This total is based on counts of unique photo IDs (mission-roll-frame combinations) in the IMAGES table. Note that the IMAGES table can contain multiple images per photo ID. So the count below is of all of these per photo ID just once. This total includes only those photos that have images in our database.
Total number of images taken by astronauts: 3,551,906

Missions
    Total number of images taken from:
      International Space Station: 3,175,122
      Space Shuttle: 320,883
      Mir: 2,512
      Skylab: 38,358
      Apollo, Gemini & Mercury: 13,557

ALL METADATA (Frames Table)
Number of frames cataloged with metadata: 707,156
Number of frames not cataloged with metadata: 2,950,439

Special film types
    Number of frames that are color visible light: 363,346
    Number of frames that are color infrared: 42,262
    Number of frames that are black and white: 24,070
    Number of frames taken with ESC: 267,761
Camera / Film formats
    Number of frames taken by Skylab Multispectral Photographic Camera: 33,285
    Number of frames taken by Skylab Earth Terrain Camera: 5,478
    Number of frames taken by Linhof: 29,557
    Number of frames taken by Hasselblad: 337,401
    Number of frames taken by 35 mm: 19,363
    Number of frames taken by Kodak digital camera: 137,411
    Number of frames taken by Nikon digital camera: 126,118
Number of frames with a tilt value or both a center point and a feature that suggests they are earth-looking: 640,959
    Of these, number of remaining frames with an entry for focal length: 616,550
      Of these, number of remaining frames with normal exposure: 228,256
        Of these, number of frames designated with HO tilt angle: 41,551
          Of these, subset taken with 40-89 mm lens: 13,398
          Of these, subset taken with 90-249 mm lens: 18,314
          Of these, subset taken with 250 + mm lens: 8,975
        Of these, number of frames designated with LO (or number < 56) or NV tilt angle: 179,975
          Of these, subset taken with 40-89 mm lens: 13,177
          Of these, subset taken with 90-249 mm lens: 66,276
          Of these, subset taken with 250 + mm lens: 100,022
FRAMES <= 25% cloud cover
Number of frames <= 25% cloud cover in catalog: 489,682
Number of these frames with a tilt value or both a center point and a feature that suggests they are earth-looking: 432,661
    Of these, number of remaining frames with an entry for focal length: 415,938
      Of these, number of remaining frames with normal exposure: 138,526
        Of these, number of frames designated with HO tilt angle: 18,006
          Of these, subset taken with 40-89 mm lens: 5,415
          Of these, subset taken with 90-249 mm lens: 7,728
          Of these, subset taken with 250 + mm lens: 4,329
        Of these, number of frames designated with LO (or number < 56) or NV tilt angle: 115,861
          Of these, subset taken with 40-89 mm lens: 6,882
          Of these, subset taken with 90-249 mm lens: 41,132
          Of these, subset taken with 250 + mm lens: 67,581
FRAMES >= 70% cloud cover
Number of frames >= 70% cloud cover in catalog: 92,061

SUNGLINT
Number of frames taken with a sun elevation between 42 and 57 degrees. 143,650