| Unspecified/unknown company 2x barlow 2" | Accessory | 2 | 3 |
| Unspecified/unknown company 2x photo multiplier | Accessory | 2 | 6 |
| Unspecified/unknown company 50/200 Guidescope | Telescope or lens | 7 | 227 |
| Unspecified/unknown company 60/240 Guidescope | Telescope or lens | 27 | 262 |
| Unspecified/unknown company 60mm guide scope | Telescope or lens | 6 | 141 |
| Unspecified/unknown company 80/400 Guidescope | Telescope or lens | 2 | 2 |
| Unspecified/unknown company Archenhold Observatory Coude Refractor 150 mm | Telescope or lens | 1 | 2 |
| Unspecified/unknown company AstroImageJ (AIJ) | Software | 4 | 15 |
| Unspecified/unknown company B | Filter | 2 | 8 |
| Unspecified/unknown company Barlow 2x (Achromatic) | Accessory | 7 | 16 |
| Unspecified/unknown company Dark Energy Survey (DECam) | Camera | 2 | 5 |
| Unspecified/unknown company EQMod | Software | 63 | 847 |
| Unspecified/unknown company ESO Faint Object Spectrograph and Camera (EFOSC) | Camera | 1 | 6 |
| Unspecified/unknown company ESO Faint Object Spectrograph and Camera 2 (EFOSC2) | Camera | 1 | 1 |
| Unspecified/unknown company ESO FOcal Reducer and low dispersion Spectrograph (FORS1) | Camera | 1 | 1 |
| Unspecified/unknown company ESO FOcal Reducer and low dispersion Spectrograph (FORS2) | Camera | 1 | 1 |
| Unspecified/unknown company ESO Multi-Mode Instrument (EMMI) | Camera | 1 | 1 |
| Unspecified/unknown company ESO XSHOOTER | Camera | 1 | 1 |
| Unspecified/unknown company Expanse 120 Color | Camera | 17 | 143 |
| Unspecified/unknown company Expanse 120 Mono | Camera | 3 | 52 |
| Unspecified/unknown company Ezgif | Software | 1 | 1 |
| Unspecified/unknown company GStar-EX (mono) | Camera | 2 | 8 |
| Unspecified/unknown company GStar-EX2 (mono) | Camera | 1 | 1 |
| Unspecified/unknown company GStar-EX3 (color) | Camera | 2 | 6 |
| Unspecified/unknown company H-alpha | Filter | 3 | 13 |
| Unspecified/unknown company Instituto de Astrofísica de Canarias (IAC) CAMELOT | Camera | 1 | 5 |
| Unspecified/unknown company L | Filter | 2 | 13 |
| Unspecified/unknown company Liverpool Telescope | Telescope or lens | 0 | 0 |
| Unspecified/unknown company Liverpool Telescope IO:O | Camera | 6 | 173 |
| Unspecified/unknown company MagicLantern | Software | 11 | 30 |
| Unspecified/unknown company Off-axis guider | Accessory | 1 | 10 |
| Unspecified/unknown company PixInsight Mosaic by Coordinates | Software | 4 | 3 |
| Unspecified/unknown company R | Filter | 2 | 8 |
| Unspecified/unknown company Red 2" | Filter | 0 | 0 |
| Unspecified/unknown company Star Fixer | Software | 3 | 33 |
| Unspecified/unknown company Step down rings down to 30 mm | Accessory | 1 | 2 |
| Unspecified/unknown company Steward Observatory Mont4K Imager | Camera | 1 | 3 |
| Unspecified/unknown company The Ritchie Telescope | Telescope or lens | 2 | 3 |
| Unspecified/unknown company Tripod | Mount | 39 | 104 |
| Unspecified/unknown company Unspecified sensor for Fujifilm FINEPIX S5 PRO | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm FINEPIX S5700 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm GFX 50R | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm GFX 50S | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X 100T | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X 30 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X 70 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X A1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X A3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X E1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X E2 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X E3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X H1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X M1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X PRO1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X PRO2 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T10 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T2 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T20 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T30 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Fujifilm X T4 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Meade Deep Sky Imager (color) (color) | Sensor | 26 | 261 |
| Unspecified/unknown company Unspecified sensor for Meade Deep Sky Imager Pro (mono) (mono) | Sensor | 56 | 654 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix 5400 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix 8400 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P1000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P500 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P510 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P610 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P900 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix P950 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix S2700 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix S5200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Coolpix S7000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D1 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D1H | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D1X | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D2X | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D2XS | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D300 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D300S | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3300 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3400 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3500 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3S | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D3X | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D4 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D40 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D40X | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D4S | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D50 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D500 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5300 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5500 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D5600 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D6 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D60 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D600 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D610 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D70 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D700 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D7000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D70S | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D7100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D7200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D750 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D7500 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D780 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D80 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D800 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D800E | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D810 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D810A | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D850 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon D90 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon DF | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z5 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z50 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z6 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z6II | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z7 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z7II | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Z9 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Nikon Zfc | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Pentax 645D | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Pentax 645Z | Sensor | 4 | 71 |
| Unspecified/unknown company Unspecified sensor for Pentax K-1 | Sensor | 20 | 163 |
| Unspecified/unknown company Unspecified sensor for Pentax K-1 II | Sensor | 17 | 73 |
| Unspecified/unknown company Unspecified sensor for Pentax K-3 | Sensor | 17 | 150 |
| Unspecified/unknown company Unspecified sensor for Pentax K-3 II | Sensor | 10 | 144 |
| Unspecified/unknown company Unspecified sensor for Pentax K-3 III | Sensor | 3 | 40 |
| Unspecified/unknown company Unspecified sensor for Pentax K-30 | Sensor | 17 | 132 |
| Unspecified/unknown company Unspecified sensor for Pentax K-5 | Sensor | 22 | 200 |
| Unspecified/unknown company Unspecified sensor for Pentax K-5 II | Sensor | 7 | 62 |
| Unspecified/unknown company Unspecified sensor for Pentax K-5 Iis | Sensor | 13 | 74 |
| Unspecified/unknown company Unspecified sensor for Pentax K-50 | Sensor | 12 | 87 |
| Unspecified/unknown company Unspecified sensor for Pentax K-500 | Sensor | 3 | 14 |
| Unspecified/unknown company Unspecified sensor for Pentax K-7 | Sensor | 3 | 5 |
| Unspecified/unknown company Unspecified sensor for Pentax K-70 | Sensor | 23 | 128 |
| Unspecified/unknown company Unspecified sensor for Pentax K-r | Sensor | 10 | 61 |
| Unspecified/unknown company Unspecified sensor for Pentax K-S1 | Sensor | 3 | 8 |
| Unspecified/unknown company Unspecified sensor for Pentax K-S2 | Sensor | 1 | 2 |
| Unspecified/unknown company Unspecified sensor for Pentax K-x | Sensor | 13 | 121 |
| Unspecified/unknown company Unspecified sensor for Pentax K100D | Sensor | 2 | 4 |
| Unspecified/unknown company Unspecified sensor for Pentax K10D | Sensor | 7 | 58 |
| Unspecified/unknown company Unspecified sensor for Pentax K110D | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Pentax K2000 | Sensor | 1 | 3 |
| Unspecified/unknown company Unspecified sensor for Pentax K200D | Sensor | 4 | 10 |
| Unspecified/unknown company Unspecified sensor for Pentax K20D | Sensor | 6 | 21 |
| Unspecified/unknown company Unspecified sensor for Pentax KP | Sensor | 10 | 106 |
| Unspecified/unknown company Unspecified sensor for QHYCCD QHY PoleMaster (mono) | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A200 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A230 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A300 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A3000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A33 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A350 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A37 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A5000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A5100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A55 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A57 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A58 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A6000 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A6300 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A6400 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A65 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A6500 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A6600 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A68 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A77II | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7II | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7III | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7R | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7RII | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7RIII | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7RIV | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7S | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A7SII | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A9 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony A99 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX3N | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX5 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX5N | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX5R | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX5T | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEX6 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEXC3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony NEXF3 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony RX100 | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony RX100III | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for Sony RX10IV | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for SVBony SV105 (color) | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for SVBony SV205 (color) | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for SVBony SV305 (color) | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for SVBony SV305 Pro (color) | Sensor | 0 | 0 |
| Unspecified/unknown company Unspecified sensor for SVBony SV905C (color) | Sensor | 0 | 0 |
| Unspecified/unknown company V | Filter | 2 | 7 |
| Unspecified/unknown company Violet Wratten #47 | Filter | 7 | 15 |
