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Kickstarter Cooke triplet with bokeh ( ie spherical aberration) control Vimeo Is it actually a thambar lens ? Front glass with center mirror spot The spherical aberration of the lens was produced primarily at the outer perimeter of the lens.  Stopping it down to smaller apertures would reduce this effect and it was totally eliminated at f/9.   To further enhance the soft focus effect, the lens came supplied with a special, clear filter that had a one centimeter mirrored spot in the center which eliminated the sharp image created by the center of the lens. Reference: Thambar lens Phsc ca   J travnik  on apodization filter  Mobile 01

 Inside Outside Another version Selling Rmb 0.5 ~0.7 @TB Mainly used in security CCTV camera  Such filter is also used in zwo seestar s50

Just my own interpretation Extract from coffee ad astra There is no single best It depends on your espresso style: normal blended or single origin (SOE) Key characteristics of different espresso  Blended: balanced SOE: unimodal, each of tastes stand out loudly. most people preferred characteristic along the NorthEast-SouthWest zone For blended, Sweet spot is middle of chart  For SOE, swett spot is NE or SW, along NE-SW zone IMHO: blended: 14. G-Iota Probarista, Niche zero SOE: Baratza forte 4. mahlkonig X54. , 1 Rocket Faustino and 3 Quarmar M80 offers special characters  Does burr size and geometry matter? Just one of the factors. For blended: flat burr, 50 to 70mm is "good enough" For SOE: flat burr, burr size is not only factor. From Jonathan Gagne: top-rated grinders appear to be somewhat balanced in this particular figure rather than being located at one extreme . It is still hard to say this is super conclusive (we would need many more such studies for this), but ...

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 For small motors Reference: Techweb

 error: from internet , 維修兵團   homeguidecorner the most likely it's the carbon brush. This sounds easy.... Where to buy such carbon brush? Here: dimension of brush: 33 x 13 x 5 mm hkd 50 a piece, two pieces costs hkd 100 ( asof Dec 2023) but not sure this shop will still be running 5 or 10 years later Taking the motor out is not so difficult. At least not the most difficult one when comparing the other steps. connector is 7 positions, but only have 6 connector blades The 2 mounting hex screws is 10mm. The motor refuses to come out and you have to lean the machine on it's back , and pry the motor out from the other end  Welling (威靈） HXGN-1L 82 universal motor, (F type?) Supplier code: 400010580038 The last 2 digits refer to different type of  box connectirs and no of blade pins in that connector   54-00310-02-08 Just a centimeter remaining from original brush: The carbon brush is within a holder, which has a spring, and a copper braid to connect to the carbon br...

 ICT Invented by Austian Dr Hans Nemec in 1948 Physio-pedia Nihonmedix ASTAR Omron 魚躍 倍益康 TENS Neuragenex Controversial: Sciencedirect   Rehmed : IFT vs ultrasound  Patent   Patent of apparatus   PT health  

  Website   Original Recipe Ingredients: 250 g of Lattebusche mascarpone 50 g of Amadori egg yolk 53 g of sugar  Italia Zuccheri 6 Vicenzovo ladyfingers biscuits by Matilde Vicenzi Coffee to taste  Cocoa to taste  METHOD: Beat the sugar and egg yolk in a mixer until it doubles in volume and becomes a light, silky cream. Add the mascarpone (cold) to the cream. Work with an electric mixer until you obtain a smooth and compact cream. Set aside in a piping bag with a nozzle of your choice. Moisten the ladyfingers in the (unsweetened) coffee, without wetting them too much. Then cut out the biscuits with a rectangular pastry cutter or a pastry cutter of your choice. Start the composition with a layer of biscuits, a generous layer of cream, another layer of biscuits and finish with the remaining cream. Remove the pastry cutter, complete with cocoa powder and serve. Creative recipe: INGREDIENTS 54g of Amadori egg yolk 69g of sugar Italia Zuccheri 250g of Lattebusche mas...

Various gadgets for hand pouring, - By shape geometry  Cone: v60 Flat bottom: melitta Basket: kalita wave, timemore b75, orea   Homegrounds  cone vs basket. Found that flat bottom baskets produce coffee with lower TDS than cone filters, all other factors (like pouring technique, water temperature, and grind size) being equal.(contradictory to James H) Perfectdailygrind  :The UC Davies and SCA study found that for light roast: flat-bottom basket yielded flavor attributes with more dried fruit, sweet, and floral flavor intensities, while the conical basket yielded more citrus, berry, and sour.  Similarly, the basket shape affected the dark roast, with the flat bottom yielding more pronounced chocolate, cocoa, and woody flavors, and the conical yielding much more intense bitterness. - By filter thickness: Cafec: light roast to dark roast, thickness difference Coffee adastra  in depth analysis on coffee filter  - By Material Bleached vs unbleached Bamboo ...

 Illuma-T Once ILLUMA-T is on the space station, the terminal will send high-resolution data, including pictures and videos to LCRD at a rate of 1.2 gigabits-per-second,” said Matt Magsamen, deputy project manager for ILLUMA-T. “Then, the data will be sent from LCRD to ground stations in Hawaii and California. This demonstration will show how laser communications can benefit missions in low Earth orbit.” Nasa Nasaspaceflight Twitter  with video

 长征五号遥六运载火箭是我国目前最大的运载火箭，其总长度达到了63米，创下了长征五号运载火箭的最长纪录。这一变化主要源自整流罩长度的增加，从原来的9.5米增加到了13.5米，增加了近4米。这意味着这次发射的卫星体积更大，重量更重，功能更强。 至少拥有四米口径的光学镜头，可望获得高分辨率。结合我国早前成功研制的碳化硅光学镜片，分辨率可达到2.5米。这将使其不仅可以监视护卫舰，还能通过分析民用AIS信息等综合情报，区分军用和民用舰艇，进一步提高我国海上目标监测的能力。此外，遥感四十一号卫星还可以观察敌方的军事设施，如导弹发射井、雷达站、机场等，为我国制定作战计划提供参考。 超级天眼的战略威慑力 综上所述，遥感四十一号卫星可能成为一颗既能提供弹道导弹预警功能，又能执行高轨道光学侦查的超级天眼。其战略威慑力不仅限于导弹威慑，还包括对海上目标的监测和情报提供。这标志着我国在太空领域的技术突破，对维护国家安全具有重大战略价值。遥感四十一号卫星的成功发射，也展示了我国航天事业的快速发展，增强了我国的国际地位和影响力。 Orbit: 195 x 35,815 公里、倾斜 19.51 度的轨道上。 N2yo NORAD 58582 Int code 2023-196a Geosynchronous high resolution satellite development from Li Guo: 1st stage  50m resolution, Gaofen-4 2nd stage 15m resolution, Gaofen-13 3rd stage 3-5m resolution with 3-4m mirror, >>> Yaogan-41? 4th stage 1-2m resolution using " segemted Open system imaging", "quantum imaging system", "thin film radiographic(diffraction )imaging system" etc Reference Gunter Celestrak Isstracker Weixin 1 Weixin 2 Ts2 space   Naukas Novosti...

 影印機的 線掃鏡頭？ Weibo Fuji Xerox workcenter Example part number from fuji xerox: 604k21506 Amazon Argecy Partsdrop AliExpress   Xwktech Looks like a macro lens to scan documents  Britannica Wiki Copytechnet  forum Xerox support  forum   Manualslib Diy Zhihu Copyscope   2 Oldmiow 6片四組 double gauss lens

  牧夫  210mm f/4 Bilibili  ， 黑燈 on bilibili 2 , 黑燈 weibo 5 elements 55ed  version 52ed   make from Statuez  TB shop Another  TB  shop 抄襲  ？

Neilvn  135 f2 vs 70-200 zoom f2.8 100mm f2.8 STF , with APD apodization element  Grant corban 200mm f2 vr Chan nds 200mm f1.8 Art in motion Miguel Quiles Julia Trotti Slantedlens  600mm f4 Joe Garcia diyphotography   Brandon cole From dof simulator: 400mm f2 .8  At subject to camera distance of 7.2m Bokeh 23% 8.4mm 除了 bokeh 的 尺寸大小，bokeh 本身是lemon or cat eye shape Facial distortion of different focal length  HKPF 招募的圖片是否PS 把二圖疊制？就自行判斷吧