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hirotaka.yuzurihara - 9:58 Friday 19 December 2025 (35905) Print this report
TCam photo session 20251219

[Yuzurihara, Yokozawa]

Yokozawa-san took the TCam photos for commissioning at 08:20 ~ 08:26 this morning. The previous work is klog35881 and klog35770

As I checked quickly, the issue of full-disc on calcenter01 happened again, which was reported in klog. The automatic fitting process did't launch just after taking images. Until solving this issue, it's difficult to update of mirror center positions.


To perform the cross-check of the height change of mirrors, I will analyze the images in local. It will take time a bit...

Comments to this report:
hirotaka.yuzurihara - 13:43 Friday 19 December 2025 (35909) Print this report

I conducted the analysis for today's TCam photo session. I compared the height change between 12/05 (starting day of warming-up) and 12/19 (today). 

  • ETMX
    • The mirror moved downward with 110/1246*2.1‎ = 0.185 mm
  • ETMY
    • The mirror moved downward with 110/1248*6.4‎ = 0.654 mm
  • ITMX
    • The mirror moved downward with 110/630*2.3‎ =0.402 mm
  • ITMY
    • The mirror moved downward with 110/640*5.9‎  = 1.000 mm

As I checked images, this change for ITMY seems to include the drift of TCam itselft. So, the value is overestimated one.

Now, I can't upload images on klog. I guess it's due to the file size limitation (file size is 20~25 MB). Instead, I will upload the images on slack (#o5_preparation).

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