導星SK

1 旭光的導星, 

2不知有沒有和永光約時間裝好對焦器，

3還有需不需要我暑假去幫忙裝窗簾 (is催窗簾)

Case1 拖, 可能是鏡筒變形

Case 2第一次 RMS<10, 忘了存

再做一次 tpoint Sky RMS 7.0

不太拖了

F-18 VS 假想敵中隊的近接觸?

https://youtube.com/shorts/JkiaN1PcSr4?

NTHU期末

Festival for dragon and for 備期末(在新竹)

市政就今天

市政路延伸工程第一標工業區一路至安和路 舉辦通車祈福典禮，全長750公尺 "下午3時" 正式開放通車

三人各忙各的

KH

觀星園5/23

建功

F1 car

Talk with dad about Astro Club

Quark @ Cloud

 原本要拍太陽, 但少了台VIXEN 碳腳

就在鋒面過後

 假日下了一整天的雨

13/14日的下半夜拍了一段時間

14日的上半夜驚人, SK天文 台的電腦重啟失敗, AnDk連不進去

怎麼辦? 還好沒機會下雨

但羅生門, 是誰把頂關了起來???

成就解瑣

被教務處通知"聽經課的期中考不及格, 要不要停休?"
成就解瑣

專題後續

老師沒變, 認識妍一的學姐是研究火箭噴嘴, 她給了我二篇paper

Ex. C-103 Nozzle at Space X

SpaceX utilizes C-103 niobium alloy, specifically in the nozzle extensions of its Merlin vacuum engines on Falcon 1, Falcon 9, and Falcon Heavy rockets. This alloy is also used in the reaction control engines of the Dragon capsule. C-103 is known for its high-temperature resistance and strength, making it suitable for demanding rocket nozzle applications. 

Key aspects of C-103 usage in SpaceX rockets:

• Merlin Vacuum Engines:

  The C-103 alloy is used in the nozzle extensions of the Merlin vacuum engines, which power the upper stages of SpaceX rockets. 
• Dragon Capsule:

  The reaction control engines of the Dragon capsule, which help maneuver the capsule, also utilize C-103. 
• High-Temperature and Strength:

  C-103 is chosen for its ability to withstand the extreme temperatures and stresses generated during rocket launches. 
• Historical Significance:

  C-103 was also used in the Apollo program's Saturn V rocket, specifically on the Service Propulsion Module engine nozzle.