[{"data":1,"prerenderedAt":169},["ShallowReactive",2],{"project-45547346":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":20,"keywords":22,"reception":26,"sentiment":27,"stance_mix":28,"scored_comments":33,"aspects":34,"strip":39,"post_text":41,"what":42,"said":45,"maker_in_thread":94,"shape":103,"grid":106,"attempts":130,"same_week":131,"maker_shows":160,"maker_hidden":161,"reader_version":162,"card":163},"45547346","Waverider","A large format XY scanning hyperspectral camera","title","Show HN: A large format XY scanning hyperspectral camera","https:\u002F\u002Fwww.anfractuosity.com\u002Fprojects\u002Fwaverider\u002F","anfractuosity.com","anfractuosity",1760167805,2025,44,10,1354,3837,36,"shown","hardware","hyperspectral camera",[21,23,24,25],"spectrometer","xy scanning","fibre optics","curious",-0.077,{"positive":29,"neutral":30,"mixed":31,"critical":32},2,3,0,1,6,{"execution":35,"idea":36,"performance":37,"design":38},{"positive":31,"critical":31},{"positive":29,"critical":31},{"positive":31,"critical":32},{"positive":31,"critical":31},[30,31,40,31,40,30,32,31,30,31],5,null,{"problem":41,"audience":41,"pricing":41,"motivation":41,"time_to_build":41,"stack":43,"openness":44,"stage":44,"team_size":44},[],"unknown",{"praise":46,"objections":55,"requests":63,"questions":75,"alternatives":86},[47],{"value":48,"source":49,"evidence":50},"Well done, thanks for sharing","commenter",[51],{"id":52,"by":53,"text":54},"45617383","bflesch","Well done, thanks for sharing. May I ask a stupid question? In order to speed up this process you'd need to buy more of the broadcom spectrometers which are quite expensive. So…",[56],{"value":57,"source":49,"evidence":58},"Scan rate is slow and limits usability",[59],{"id":60,"by":61,"text":62},"45617264","phubbard","The scan rate really limits the usability of this. Do you have any leads on planar sensors?",[64,71],{"value":65,"source":49,"evidence":66},"Use galvanometers instead of moving the fiber for faster scanning",[67],{"id":68,"by":69,"text":70},"45617942","juancn","Super cool, have you considered using galvanometers rather than moving the fiber around? It should allow for faster scan rate (assuming the XY is the limiting factor).",{"value":72,"source":49,"evidence":73},"Explore planar sensors for single-shot capture",[74],{"id":60,"by":61,"text":62},[76,80],{"value":77,"source":49,"evidence":78},"Can multiple fibres of different lengths share one spectrometer?",[79],{"id":52,"by":53,"text":54},{"value":81,"source":49,"evidence":82},"Could hyperspectral imaging be used for microscopy without staining?",[83],{"id":84,"by":53,"text":85},"45617623","Thanks, sorry for asking if it was answered already. Would be very interesting to do some microscopy with this approach, as the video mentions medical use cases. There's been a…",[87],{"value":88,"source":89,"evidence":90},"Slit and diffraction grating with a 2D sensor (push broom scanning)","maker",[91],{"id":92,"by":11,"text":93},"45617535","The much faster way is to move a slit in front of a diffraction grating and use a 2D sensor behind that, that way you can obtain multiple spectral patterns simultaneously, see…",{"comments":30,"answered":29,"key":95},[96,97,100],{"id":92,"text":93},{"id":98,"text":99},"45617659","Yeah definitely, I've not looked at papers relating to microscopy with hyperspectral cameras. That might be especially interesting with samples that fluoresce.",{"id":101,"text":102},"45617748","A linear scanning mechanism would be a lot faster still than the XY approach. I'm very curious how expensive sensors are though, that capture this data in a single shot, I've not…",{"commenters":33,"max_depth":40,"maker_replies":30,"first_comment_mins":104,"lifespan_hours":105},9065,156,[107,109,111,113,115,117,118,120,122,126],[52,31,30,108,53,31],"project\u002Fneutral\u002Fexecution",[92,31,31,110,11,32],"maker\u002Fneutral\u002Fexecution",[84,31,40,112,53,31],"project\u002Fpositive\u002Fidea",[98,31,31,114,11,32],"project\u002Fneutral\u002Fidea",[116,31,40,112,53,31],"45618151",[68,32,30,108,69,31],[60,29,32,119,61,31],"project\u002Fcritical\u002Fperformance",[101,29,31,121,11,32],"project\u002Fneutral\u002Fperformance",[123,29,30,124,125,31],"45618329","project\u002Fneutral\u002Fdesign","DarkSucker",[127,30,31,128,129,31],"45621135","other\u002Fneutral\u002Fnone","westurner",[],[132,137,142,147,151,155],{"id":133,"name":134,"points":135,"category":136},"45536694","Discrete Distribution Networks",656,"ai",{"id":138,"name":139,"points":140,"category":141},"45567770","SQLite Online",465,"data",{"id":143,"name":144,"points":145,"category":146},"45526890","Lavandula",420,"dev_tools",{"id":148,"name":149,"points":150,"category":20},"45529393","keyer",411,{"id":152,"name":153,"points":154,"category":146},"45590949","Halloy",381,{"id":156,"name":157,"points":158,"category":159},"45558611","Ambi",314,"consumer_social",8,false,"v2",{"id":164,"name":5,"line":6,"ai":161,"cat":20,"year":13,"points":14,"comments":15,"rec":26,"s":165,"top":18,"kw":166,"maker":11,"domain":10,"tier":19,"attempts":31,"strip":167,"url":9,"mix":168,"praise":48,"objection":57,"sub":21},45547346,-0.08,[21,23,24,25],"3050531030",[29,30,31,32],1794036683983]