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目前顯示的是 1月, 2019的文章

OASES (Organized Auto-telescopes for Serendipitous Event Survey)

  location of telescopes: Miyako island ( 宮古島) scaled flux Takahashi EM-200 Equatorial Mount Celestron RASA C11 inch ZWO ASI1600MM-Cool Metabones Speed Booster Laptop computer and SSD GPS receiver calibrated image and difference image signal-to-noise ratios time offset: In the summer of 2016 to 2017, the research group installed a system on the roof of the "Okinawa prefectural Miyako youth house" in Miyakojima City, Okinawa Prefecture, and is about 4 square degrees (about 20 full moons) 2000 stars were observed for 60 hours. The telescope is located in the Milky Way where there are a large number of stars that can be observed at one time and is located near the ecliptic where the number of the Kuiper belt objects is large (that is, it is predicted that the occultation phenomenon is likely to occur) It was. Examination of the obtained moving image data revealed that the 12th grade star in the field of view had d...

Diamond Hill - Feng Chi-Shun

Schools Bus stops

Kombucha

21/1/19

polyu camera pointing system

The Camera Pointing System developed by PolyU expert measures 85 cm (length) by 27 cm (width) and 16 cm (depth) and it weighs 2.8 kg. It was installed in the upper part of the lander and capable of moving vertically by 120 degree and rotating sideway by 350 degree to capture images of the moon as well as movement of the rover. This sophisticated space tool will be able to withstand the vast difference in temperature and function in one sixth of gravity on the moon. After the rover is released, the Camera Pointing System will come into operation together with other parts of the lander for lunar exploration. PolyU has been working closely with CAST. In 2010, both parties signed a pact for the establishment of a Joint Laboratory in Precision Engineering for Space Applications. CAST also donated advanced space research equipment for the Joint Laboratory. In the third phase of China’s lunar exploration programme, Professor Yung will further collaborate with mainland e...

佛山高明雲勇林場

https://kknews.cc/zh-hk/agriculture/ynrp6rb.html 云勇森林公园是佛山市最大的林场,也是目前佛山市唯一的市属国有林场。总面积2.89万亩,主要种植杉树、松树等针叶用材林为主。置身原始森林,呼吸着新鲜的空气,顿时心旷神怡。   放眼远望,群山起伏,郁郁葱葱,悬崖边倒挂着几株青松,风吹雨打,岿然不动,山风阵阵,掀起阵阵绿浪,林涛如海。在云勇森林公园深处,有天然的泉眼,常年淙淙流淌。禅城等其他四区、广州、深圳等地的私家车主们经常带着家人和大桶小桶,来装纯天然的“山泉水 單車遊: http://www.foshannews.net/fxfs/hdzm/201612/t20161201_53527.html

LinkIt ONE

 $69.90 from Amazon Includes ARM7 EJ-S™, GSM, GPRS, Wi-Fi, Bluetooth BR/EDR/BLE, GPS, Audio codec, and SD card connector on a single development board. Pin-out similar to Arduino boards, including Digital I/O, Analog I/O, PWM, I2C, SPI, UART and power supply, compatible with Arduino. Provides various interfaces for connecting to most sensors, peripherals, Groves, and other widgets. You are what you wear. Using LinkIt ONE together with MediaTek LinkIt SDK (for Arduino) you will be able to easily turn your ideas into practical prototypes and make them a reality with the Seeed productization and agile manufacturing service.  comparison between LinkIt ONE, Intel Edison, Raspberry Pi, BeagleBone Black (left to right) If you add BT, GPS and GSM into the other 3 boards, the cost is much higher than LinkIT ONE. Though the ARM on LinkIt ONE, MT2502A(launched in 2014),  is targeting the wearables market, claim to have low power consumption seen...

WWF Poland ASF: it is human beings who contribute to ASF spread

"In order to effectively fight against ASF, farmers involved in pig farming should strictly observe a number of principles, i.e. the so-called biosecurity, including the use of specific behaviors and hygiene measures, such as the disinfection of hands, footwear, clothing, tools or equipment used in farms "- wrote the WWF Poland Foundation in a message sent on Tuesday.(8 Jan 2019)   "The virus is transmitted from the forest on clothes, shoes or wheels of cars." Currently, where there are outbreaks of the virus, pigs do not have any direct contact with wild boars or other forest animals, because they must be permanently locked in piggies "- noted Piotr Chmielewski from WWF Poland Foundation.   "By the end of February, almost all wild boar in Poland will be killed, including young and pregnant dungeons, even animals living in national parks, together over 210,000 feral pigs! This cruel, costly, scientific and ineffective activity...

sharpstar 150mm f/2.8 hyperbolic astrograph

to be launched in summer, 2019. spot diagram is now available, and connections diagram to camera is shown . list price RMB 13,000 ( USD 1900 approx) comparing this with Takahashi epsilon-180ED: spot diagram: connections: the focuser is 2.5 inch, and threads are M48 x 0.75mm   cloudynights first impression threads   some nice photo review from skypoint   Astrofotoblog review  c

Hongyan LEO communications constellation satellite

China will launch the first of around 320 satellites for a planned low Earth orbit communications constellation before the end of the year, the country's main space contractor has stated. The experimental first satellite has been developed under the China Aerospace Science and Technology Corporation (CASC), which revealed last week at the 2018 Zhuhai Airshow that the launch would take place soon. The satellite will be sent into a 1,100 km altitude orbit by a Long March 2D launch vehicle to test L- and Ka-band communication capabilities and compatibility in low Earth orbit (LEO). It will be one of nine satellites orbited by 2020 as a pilot demonstration for the Hongyan system, which translates as 'wild goose'. The name likely comes from the fact that geese were used to deliver messages in ancient China. The first 60 satellites making up the first phase of deployment of the Hongyan constellation are expected to be in orbit and operational ...

chang'er 4 landing

scheduled to soft land on  Von Kármán crater on 3 Jan, 2019 Von Kármán will offer the chance to analyse the variations of composition of the lunar surface and SPA melt sheet with the Visible and Near-Infrared Imaging Spectrometer ( VNIS ), while also returning unprecedented images with cameras on both the lander and rover. A number of subsequent impact craters in the surrounding region, such as Finsen, are expected to have delivered ejecta to the floor of Von Kármán, potentially providing a rich sample of the SPA basin and far side geologic history. The Lunar Penetrating Radar (LPR) and low‐frequency radio spectrometer (LFS) payloads will also return unique data from the landing region, while the Lunar Lander Neutrons and Dosimetry ( LND ) instrument and Advanced Small Analyser for Neutrals ( ASAN ) will provide insight into the space environment and interactions with the surface. The CNSA administration said Chang’e 4’s scientific tasks included astrono...