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HINODE Operation Remarks 0052


 title
MW rotation speed reset

term

2018/04/23-2018/04/24
2020/11/25-2020/11/26

@ @

 remarks
On 2020/10/22 10:09, Sakao, Taro wrote:
> As reported in the remote SWG meeting in July, we are going to perform
> the next momentum wheel reset operation (reset the rotation speed back to
> 1800 rpm) for Hinode this autumn.
>
> As I understand there will be a joint campaign with Solar Orbiter until 23 November
> (based on the Focused Mode calendar), the projected date for the operation is:
>
> Wednesday, 25 November JST, with Thursday, 26 November JST for backup.
>
> I would appreciate it very much, if you consider the above schedule when making
> discussions on Hinode observations. Thank you very much for your understanding.


23-2018/04/24: backup

On 2018/04/16 22:09, Sakao, Taro wrote:
We decided that the MW reset operation would start shortly after 5 UT on Monday, 23 April, with each of the telescopes is to stop observations in the first pass on that day (KRN1, AOS: 5:34 UT on 23 Apr.).

Day 2 of the operation (24 April) is prepared for the case where the Start Tracker (STT; sensor used for the Z-axis rotation of the spacecraft) were not to track the target star (Canopus) during the Day 1 operation. We concluded to resume telescope observations from the evening passes of Wednesday, 25 April so as to avoid any confusion in the Day 2 operation.

So, to summarize, Hinode is to stop observations at 5 UT on Monday, 23 April and will resume observations after the evening passes of Wednesday, 25 April. Later, I will send separate e-mails to telescope COs for some more details on the non-observing period and necessary actions for the telescopes side. Thank you for your cooperaiton and I hope this would cause minimum impact to the HOP observations.

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