Astronomy Chatroom
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DustWonder
我想造一个JWST的模型，但是不知道怎么做，有动手能力强的大佬能给点思路吗？
希望低成本哦，不要太难了，谢谢大家！ 我目前的材料： （1）白纸 （2）棉签上的木棍 （3）各种马克笔、勾线笔 （4）铝箔 （5）透明胶 （6）胶水 （7）双面胶 我目前的几个问题： （1）纸质的“主镜”怎么才能立起来？ （2）前面的“杆子”怎么才能不掉下来？ （3）该怎么使普通的白纸更硬？如果没办法，有没有什么替代品？ 欢迎评论区讨论！
Lyra
Thermal balance of telescope？
Is heat balance really important? Does it have a big visual impact? I don't think it has much impact. After all, I have experimented. But I can't fault it. What do you think?
StarPicturesMiami
Looking for Seestar users in Southern Hemisphere for unique collaborative project.
Hello, I am looking to connect with other Seestar users located anywhere in the Southern Hemisphere. I have an idea to share access to my Seestar S50 with any other Seestar user in the Southern Hemisphere who would like to image Northern Hemisphere targets via remote access to my Seestar. Targets include M13 Hercules Globular Cluster, M31 Andromeda, Crescent Nebula and many others. In exchange, I would also like to have access to your Seestar in the Southern Hemisphere night skies via remote access. All that is needed is an Apple Mac computer with an M1, M2 or higher. My Seestar S50 is located at Star Front Remote Observatories in Texas in a bortle 1 night sky.If you are in the Southern Hemisphere and are interested in this collaboration idea, please email me at starpicturesmiami@gmail.comThank you, Carlos
StuartTheAlien👽🖖
And now there are 2 novae visible in the sky
Earlier this month, A nova – visible to the eye in the constellation Lupus. But, in an incredibly rare turn of events, southern observers can now see two novae with the unaided eye at once. The 2nd “new star” or nova in the constellation Vela is called V572 Velorum. It’s visible to the unaided eye from Earth’s Southern Hemisphere (the earlier nova, V462 Lupi, is visible from most of Earth). Finder chart for the nova Previously, V462 Lupi burst into view on June 12. That first nova is currently shining around +5.9 magnitude, barely within the limit for viewing with the unaided eye. Still, from a dark sky location, it might be possible to glimpse both V462 Lupi and V572 Velorum from Earth’s Southern Hemisphere. It’s a rare treat to witness a single nova. But the occurrence of two novae simultaneously is super rare!
青石Cyan Stone
Very weird
I knew my school once had an astronomy club before, and I know that the astronomy club doesn't exist anymore now. So I knew those facts already half a year ago. But last Friday, noon break was extended(just that day) for some unknown reason, so I had extra free time, and I explored school. Here's what I found out: My school once tried to built an obsevatory and ran out of money after building the obsevatory, and cannot afford a telescope, this is the first part that is weird, how come they had the money to build an obsevatory but can't afford a telescope? Because they can't afford a telescope, they turned the obsevatory into something called a 'Stary Sky Classroom' and it was closed before I entered middle school so I don't know what is in it. At the entrance of the obsevatory, in the staircases, everything changed, the whole part of the staircase has turned into a giant 3D poster large planet models hang on the roof and the wall were filled with huge star maps, astronomy facts, Miesser charts and pictures of famous astronomers like Kepler and Hubble. There were also some other equipments like what they call a 'Celestial scale'. The whole place was very impressive, like a mini astro museum. I stayed there for a long time and felt very satisfied. The 'Stary Sky Classroom' is closed so I still don't know anything about it although it cloud be more satisfying. But you can see that the place is old, the equipments were filled with dust and some wall papers on the roof are falling. Here's the second part that is weird, WHY WOULD THEY CLOSE IT? And what if I tell you, that I just found two other mini museums like that in my school, one of it is even more satisfying than the 'Astro Staircase', which must costs lots of money. But they all have something in common, all locked and old. It's like discovering an ancient empire that is once flourishing but has withered away by now, making people quite sad. Very weird, I don't know WHY. Mabye nobody is interested in astronomy in my school so it's not necessary to open it. Like what@XRaySpex said,'pity those who never look up'
天文知识馆
豺狼座发现一颗新星，V462 Lupi
南天夜空上演了一场罕见的天文奇观：豺狼座方向一颗名为V462 Lupi的新星在6月12日至18日间亮度暴增400万倍，视星等从不可见的8.7骤升至5.7，成为全球天文爱好者瞩目的焦点。A rare celestial spectacle has unfolded in the southern night sky: the nova V462 Lupi in the constellation Lupus surged in brightness by 4 million times between June 12 and 18, its apparent magnitude skyrocketing from an invisible 8.7 to a naked-eye-visible 5.7, captivating stargazers worldwide.6月12日，美国俄亥俄州立大学的“超新星全天自动巡天”（ASAS-SN）项目首次捕捉到这颗新星，其初始视星等仅为8.7（肉眼不可见）。On June 12, the "All-Sky Automated Survey for Supernovae" (ASAS-SN) project at Ohio State University in the United States first detected this nova, with an initial apparent magnitude of just 8.7 (invisible to the naked eye).南非天文台天文学家坦波（Yusuke Tampo）通过光谱分析确认其为“经典新星”，并于6月16日将其正式命名为V462 Lupi，短短6天内，V462 Lupi的亮度飙升400万倍，视星等达到5.7，进入肉眼可见范围，截至6月25日，其亮度维持在5.0–6.0之间，南半球及北纬35°以下地区（如美国南部、地中海沿岸）可观测到。Astronomer Yusuke Tampo from the South African Astronomical Observatory confirmed through spectroscopic analysis that it is a "classical nova" and officially named it V462 Lupi on June 16. In just six days, V462 Lupi's brightness surged 4 million times, reaching an apparent magnitude of 5.7, making it visible to the naked eye. As of June 25, its brightness has stabilized between 5.0 and 6.0, observable from the Southern Hemisphere and regions below 35°N latitude (such as the southern United States and the Mediterranean coast).V462 Lupi属于经典新星（非超新星），其爆发源于特殊的双星系统：V462 Lupi is a classical nova (not a supernova), and its eruption originates from a special binary star system:白矮星从红巨星伴星表面持续吸积氢物质；A white dwarf continuously accretes hydrogen-rich material from its red giant companion star;吸积物质在白矮星表面积累至临界点，触发热核失控爆炸，喷射气体并释放强光。The accumulated material on the white dwarf’s surface reaches a critical point, triggering a thermonuclear runaway explosion, ejecting gas and releasing intense light.与超新星彻底摧毁恒星不同，新星仅剥离恒星外层，白矮星本体保留，未来可能重复爆发。Unlike a supernova, which completely destroys the star, a nova only strips away the outer layers of the star, leaving the white dwarf intact—meaning it could potentially erupt again in the future.天文学家预测，V462 Lupi的亮度可能在未来数日继续增强或出现多次峰值，随后在数周至数月内逐渐变暗。Astronomers predict that V462 Lupi’s brightness may continue to increase or exhibit multiple peaks in the coming days before gradually fading over weeks to months. 由于新星爆发具有不可预测性，这可能是其首次也是唯一一次被人类记录的爆发。Due to the unpredictable nature of nova eruptions, this could be the first and only time this outburst is recorded by humanity.如进行观测：For observation:南半球的豺狼座高悬夜空，肉眼直接可见。In the Southern Hemisphere, Lupus is high in the night sky and can be seen with the naked eye.北半球则需要在日落后1–3小时内，使用Seestar向南方低空寻找（北纬35°以下地区成功率较高）。In the Northern Hemisphere, observers should use tools like the Seestar smart telescope to search low in the southern sky 1–3 hours after sunset (with higher success rates below 35°N latitude).
天文知识馆
Vera C. Rubin天文台公布了首批令人惊叹的图像
这座能够每三天扫描整个南天星空的大型天文台，或将揭开从暗物质到第九行星等一系列宇宙谜题。With the ability to scan the entire southern night sky every three days, the huge Vera C. Rubin Observatory could be about to start solving the mysteries of the universe, from dark matter to Planet Nine.海拔2600多米的智利帕琼山顶空气稀薄。夜幕降临后，银河的亮度远超平常，大小麦哲伦云隐约可见。而鲁宾望远镜的视野则深远得多——这台重达350吨的反射式望远镜配备世界最大的数码相机和镜头，其8.4米的主镜尺寸几乎达到山顶隧道运输极限的8.5米。Atop Chile's Cerro Pachón mountain at over 2,600 meters altitude, the thin air makes breathing difficult. After nightfall, the Milky Way shines with exceptional brilliance, with the Magellanic Clouds faintly visible. Yet the Rubin Telescope's vision extends infinitely further—this 350-ton reflecting telescope features the world's largest digital camera and lens, its 8.4-meter primary mirror nearly reaching the 8.5-meter transportation limit of the mountain tunnel.尽管体积庞大，该望远镜却能高速运转，每三天即可完成一次南天全景扫描。相比传统巡天项目耗时数周甚至数月，鲁宾天文台仅需不到72小时，并将持续进行长达十年的周期性观测。Despite its massive scale, the telescope operates with remarkable speed, completing a full southern sky survey every three days. Compared to traditional sky surveys requiring weeks or months, Rubin Observatory achieves this in under 72 hours, repeating this feat cyclically for a decade.首批测试图像摄于智利帕琼山约10小时的观测数据。上图右上象限的粉色与蓝色球体是银河系内的恒星形成区——三叶星云，中央为巨大的星际气体尘埃云——礁湖星云。天文学家通过整合鲁宾望远镜7小时内拍摄的678张照片合成此图。The initial test images were captured during approximately 10 hours of observation at Cerro Pachón. The upper right quadrant of the first image shows the pink and blue Trifid Nebula—a stellar nursery in our galaxy—with the vast interstellar gas and dust cloud of the Lagoon Nebula at center. Astronomers combined 678 exposures taken over seven hours to create this composite.第二张图像聚焦室女座星系团特写，这个包含数千个星系的系统虽被研究了数百年，但鲁宾望远镜首次以极致细节呈现了整个星系团及其周边天体。完整广角图像（详见上方视频）展示了约1000万个星系，这仅占鲁宾望远镜终身观测目标200亿星系的0.5%，其数据将助力破解暗物质和太阳系潜在第九行星等谜题。The second image provides an unprecedented close-up of the Virgo Cluster. While this system of thousands of galaxies has been studied for centuries, Rubin's observations reveal the entire cluster and surrounding galaxies in extraordinary detail. The full wide-angle view (see video above) displays approximately 10 million galaxies—just 0.5% of the 20 billion galaxies the telescope will ultimately observe, with data expected to illuminate mysteries like dark matter and the potential existence of a ninth planet in our solar system.科研团队开发的"天空观测者"公共平台，允许用户探索这些超高分辨率图像，通过平移和缩放功能观测恒星与星系细节。这项为期十年的"时空遗产巡天"计划将于今年晚些时候正式启动。The research team has developed the publicly accessible "Sky Viewer" platform, allowing users to explore these ultra-high-resolution images with pan and zoom functionality to examine stellar and galactic details. The decade-long Legacy Survey of Space and Time (LSST) program will officially commence later this year.