- Instrumentation - mailing lists STRW

[instrumentation meeting] Oort room BM4.33 @11:00
by Michiel Darcis 11 Nov '25

11 Nov '25

Hi all, Although carnival season has officially started, it is time for another instrumentation meeting. This week we again see each other in the Oort room for another famous slide roulette. So for those without a PhD yet send in your two slides with plots/images of what you are currently working on or have been doing the previous week to haffert(a)strw.leidenuniv.nl and m.darcis(a)sron.nl. For the folks online:

1 1

Zoom
by Michiel Darcis 05 Nov '25

05 Nov '25

Join Zoom Meeting https://universiteitleiden.zoom.us/j/61014126606?pwd=XwqwfIBv4aIIsbHi08SLPz… Meeting ID: 610 1412 6606 Passcode: s3!UMxi!

1 0

[instrumentation meeting] BM4.33 @11:00
by Michiel Darcis 05 Nov '25

05 Nov '25

Hi all, We have been blessed with presentations lately, but this week is a classic instrumentation meeting with slides, slides, and you guessed it, slides. Therefore, send in your two slides to haffert(a)strw.leidenuniv.nl and m.darcis(a)sron.nl and I will see you at 11 in the Oort room. Cheers, Michiel

2 1

Zoom link
by Michiel Darcis 29 Oct '25

29 Oct '25

New zoom link Michiel Darcis is inviting you to a scheduled Zoom meeting. Topic: Michiel Darcis' Zoom Meeting Time: Oct 29, 2025 11:00 AM Amsterdam Join Zoom Meeting https://universiteitleiden.zoom.us/j/65214832775?pwd=MQHyXPsXgHvgioPbkywS1r… Meeting ID: 652 1483 2775 Passcode: 0n^m&CLn --- One tap mobile +496971049922,,65214832775#,,,,*72266873# Germany Join instructions https://universiteitleiden.zoom.us/meetings/65214832775/invitations?signatu…

1 0

[instrumentation meeting] BM4.33 @11:00
by Michiel Darcis 29 Oct '25

29 Oct '25

Hi all, This week is another presentation. Willem Jellema from SRON Groningen will join us and give a talk about Far-IR Linear Variable Filter technology for PRIMA’s hyperspectral imager. After that we will continue with our usual slide roulette so send your slides to m.darcis(a)sron.nl and haffert(a)strw.leidenuniv.nl. See you there. Cheers, Michiel Michiel Darcis is inviting you to a scheduled Zoom meeting. Join Zoom Meeting https://universiteitleiden.zoom.us/j/61014126606?pwd=XwqwfIBv4aIIsbHi08SLPz… Meeting ID: 610 1412 6606 Passcode: s3!UMxi! --- One tap mobile +496971049922,,61014126606#,,,,*85101216# Germany Join instructions https://universiteitleiden.zoom.us/meetings/61014126606/invitations?signatu…

1 0

[instrumentation meeting] Oort room (BM4.33) @11:00
by Michiel Darcis 22 Oct '25

22 Oct '25

Hi all, This week we have our own Emily van Hese who will give us the privilege of seeing her presentation that she will give during the ICSOS conference in Kyoto. The abstract reads as follows: 'Enabling optical satellite-to-ground (quantum) communication links necessitates reducing the free-space to fibre coupling losses induced by atmospheric turbulence. Adaptive optics (AO) and multi-mode fibres (MMF) are two of the most prominent methods to achieve a limited fibre coupling loss. AO is a mature technology and is already used to great effect. Meanwhile multi-mode fibres promise similar performance, while boasting entirely passive systems. However, the necessary high-order systems of either technology may lead to high complexity solutions and high costs. A hybrid solution featuring low-order systems of both technologies might offer the required performance while circumventing the need for high-order systems. This paper studies the optimal combination of AO and MMF by identifying trade-offs between them and investigating the relative merits of potential individual and combined systems for an LEO satellite optical downlink using numerical simulations. For each simulated MMF size, the minimum required level of adaptive optics correction for a median coupling losses of 2 dB is evaluated.' After her presentation we will continue with our usual slides game. Therefore send your slides to m.darcis(a)sron.nl<mailto:m.darcis@sron.nl> and haffert(a)strw.leidenuniv.nl<mailto:haffert@strw.leidenuniv.nl>. See you there, Michiel Michiel Darcis is inviting you to a scheduled Zoom meeting. Topic: Instrumentation meeting Join Zoom Meeting https://universiteitleiden.zoom.us/j/61014126606?pwd=XwqwfIBv4aIIsbHi08SLPz… Meeting ID: 610 1412 6606 Passcode: s3!UMxi! --- One tap mobile +496971049922,,61014126606#,,,,*85101216# Germany Join instructions https://universiteitleiden.zoom.us/meetings/61014126606/invitations?signatu…

1 0

Group meeting today at 11:00 in the Oort room
by Matthijs 15 Oct '25

15 Oct '25

Hi all, A few of us are at a workshop at ESTEC. For the rest of us, we meet in the Oort room at 11 as usual. Please send your slides to me and Sebastiaan. Best, Matthijs p.s. for those joining online: Matthijs Mars is inviting you to a scheduled Zoom meeting. Topic: Matthijs Mars's Personal Meeting Room Join Zoom Meeting https://universiteitleiden.zoom.us/j/8067521313?pwd=ScyKUOBlWcI0Srija7Zlo8p… Meeting ID: 806 752 1313 Passcode: sLaJ*r3B --- One tap mobile +496971049922,,8067521313#,,,,*05042614# Germany Join instructions https://universiteitleiden.zoom.us/meetings/8067521313/invitations?signatur…

1 0

Group meeting today at 11:00 in the Oort room
by Matthijs 15 Oct '25

15 Oct '25

Hi all, A few of us are at a workshop at ESTEC. For the rest of us, we meet in the Oort room at 11 as usual. Please send your slides to me and Sebastiaan. Best, Matthijs p.s. for those joining online: Matthijs Mars is inviting you to a scheduled Zoom meeting. Topic: Matthijs Mars's Personal Meeting Room Join Zoom Meeting https://universiteitleiden.zoom.us/j/8067521313?pwd=ScyKUOBlWcI0Srija7Zlo8p… Meeting ID: 806 752 1313 Passcode: sLaJ*r3B --- One tap mobile +496971049922,,8067521313#,,,,*05042614# Germany Join instructions https://universiteitleiden.zoom.us/meetings/8067521313/invitations?signatur…

1 0

Tikkie for karaoke
by Elena Tonucci 09 Oct '25

09 Oct '25

Hello everyone! I am happy that we had a great time at the karaoke last Tuesday. Here you have a Tikkie where you can pay me back for the karaoke reservation. It's 17 euros per person. If Tikkie doesn't work for you, let me know and we can find a different way. Thank you! https://tikkie.me/pay/6nnhtip5jpgjh0bq3vbr Cheers, Elena -- Best regards, *Elena Tonucci* PhD Candidate Astronomy on Tap Committee, Paper Flash, PhD Ambassador, Social Committee *Leiden University* | Faculty of Science - Leiden Observatory | Einsteinweg 55, office BW3.46 | 2333 CC Leiden | (+39) 327 7664740

1 0

Group meeting today at 11:00 in the Oort room
by haffert＠strw.leidenuniv.nl 08 Oct '25

08 Oct '25

Hi all, It’s the day of the group meeting again. We will meet at 11:00 in the Oort room. Today I will give a short presentation (10 – 15 minutes) on the PCS instrument and how we contribute to the project. Afte that we will do our usual slide roulette. Rules: Submit 2 slides with at least 1 picture per slide. Send the slides to me at haffert(a)strw.leidenuniv.nl <mailto:haffert@strw.leidenuniv.nl> or on Slack. People that are new to the group should make a slide or 2 to introduce yourself. Met vriendelijke groet / With kind regards, Dr. Sebastiaan Haffert Assistant professor Leiden Observatory, Leiden University Einsteinweg 55, 2333 CC, Leiden, The Netherlands

1 1

2026

2025

Instrumentation ----- 2026 ----- May 2026 April 2026 March 2026 February 2026 January 2026 ----- 2025 ----- December 2025 November 2025 October 2025 September 2025 August 2025 July 2025 June 2025 May 2025 April 2025 March 2025 February 2025

Instrumentation