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| Name | Category | Last activity | Date created | Members | Images | Forum posts | |
|---|---|---|---|---|---|---|---|
| Fine Art Astrophotography | Ad-hoc collaboration | ... | ... | 370 | 3041 | 326 | |
| ZWO ASI1600MM/QHY163M | Specific to certain equipment | ... | ... | 548 | 7980 | 302 | |
| Astrophotography Germany | Geographical area | ... | ... | 178 | 3098 | 292 | |
| Fast Newtonians | Specific to certain equipment | ... | ... | 252 | 2148 | 199 | |
| Constructive Critique Requested | Other | ... | ... | 63 | 261 | 166 | |
| PixInsight Addicts | Other | ... | ... | 451 | 6183 | 155 | |
| Women Astrophotographers | Internet community | ... | ... | 46 | 1260 | 149 | |
| Suburban Astrophotography | Other | ... | ... | 507 | 13434 | 145 | |
| Camera Lens Astrophotography | Specific to certain equipment | ... | ... | 378 | 3682 | 129 | |
| AstroBin Beta Testers | Ad-hoc collaboration | ... | ... | 200 | 7 | 111 | |
| Great Red Spot (GRS) movie project | Specific to an astrophotography target | ... | ... | 38 | 48 | 106 | |
| GAS Astrophotography Interest Group | Club or association | ... | ... | 19 | 119 | 104 | |
| Schmidt-Cassegrain Telescope (SCT) Imagers | Specific to certain equipment | ... | ... | 300 | 6670 | 96 | |
| ZWO ASIAIR PRO USERS | Specific to certain equipment | ... | ... | 208 | 2315 | 95 | |
| Sky-Watcher Star Adventurer | Specific to certain equipment | ... | ... | 200 | 1182 | 94 | |
| Astrophotographes (France) | Geographical area | ... | ... | 138 | 3284 | 93 | |
| Northeast Imagers | Geographical area | ... | ... | 79 | 2142 | 88 | |
| William Optics CAT Series | Specific to certain equipment | ... | ... | 122 | 594 | 87 | |
| UK Astro-Imaging | Geographical area | ... | ... | 122 | 2538 | 85 | |
| Ritchey Chretien telescopes GSO Family | Specific to certain equipment | ... | ... | 183 | 1502 | 77 | |
| Imagers of Switzerland | Geographical area | ... | ... | 60 | 904 | 71 | |
| Beginners AP | Internet community | ... | ... | 227 | 3173 | 66 | |
| WO Star 71 | Specific to certain equipment | ... | ... | 40 | 283 | 64 | |
| Broadband under Bortle 7/8/9 | Other | ... | ... | 162 | 1943 | 61 | |
| Samyang 135 f/2 | Specific to certain equipment | ... | ... | 239 | 1081 | 57 |
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