Dr Roger Blue Stabbins (スタビン ロジェ ブルー)

Spectral Imaging Simulations for Planetary Surface Exploration // UK Space Agency PDRA, NHM // Team Member for ESA ExoMars CaSSIS, PanCam & Enfys and JAXA MMX

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Have found myself at Bluesky more and more and here less and less. Think I might start posting there a bit and all. I’m at https://t.co/dUeIS27BAA ✌️

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

I made it to Vienna! Excited to be here for #EGU2025 - I’m talking on Thursday afternoon in the Mars session on applying our Supervised Spectral Parameter Learning method to @ExoMars_CaSSIS data.

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Read on in the paper to find how hematite sensitive spectral parameters used in equivalent systems compared,

and have a play with the SPTK software, that we are continuing to expand for other problems in multispectral sampling: https://t.co/aOdiYsgw1S

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

For development, we searched for hematite against the background of basalts and clays expected at Oxia Planum. We found LOTS of spectral parameter combinations that achieved better than 95% accuracy. The best used 6 filters, but acc. >99% could still be achieved with just 2!

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

...and then lists all pair combinations of these. We compute the optimal linear discriminant for each pair combination, and then rank these by how well they separate the target from the background, in terms of a distance metric and accuracy metric.

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Rather than applying our dimension reduction to the full filter set, we applied it to pairs of spectral parameters. Our software (https://t.co/F5ip59mGbn) computes all band depth, ratio, shoulder height and slope spectral parameters afforded by a filter set,

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

We recently published part II of our preparation for @ExoMarsPanCam papers!

We developed a method and software for choosing a minimal number of vis/nir filters to downlink for the discrimination of a particular material against an expected background.

https://t.co/LqphV3l8pS

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

We took advantage of public spectral libraries via https://t.co/t5G8XrZ2HS to build a labelled training set, so we could use Linear Discriminant Analysis, the supervised sister to the well known Principal Component Analysis dimension reduction.

[Baba Yaga's Hut @byhut]

137 first London show at @thelexington tonight. @adrianutley @sebrochford

[Baba Yaga's Hut @byhut]

TONIGHT we are the @thelexington for 137 playing their second ever show! Feat. Larry Stabbins, @adrianutley, @sebrochford & Jim Barr.

Support from another brand new act The Sick Man of Europe. Loads of tickets sold but still a few on the door.

Tickets: https://t.co/L2UAdsr9vD

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

@RoyalAstroSoc @chrisclovell @NASAWebb Congrats @chrisclovell !

[Royal Astronomical Society @RoyalAstroSoc]

Next up the Winton Award for #Astronomy is presented to Dr Chris Lovell.

@chrisclovell is an exceptionally promising post-doctoral scientist whose work is being used to understand some of the earliest forming galaxies discovered by @NASAWebb.

#NAM2024

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Watching friends do the things they love really well is a great way to spend time

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Pitched feedback by distance modulation against the cone angle - The Gories at The Garage

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Mallaig and magma chambers from my sisters magnificent boat Eda Frandsen!

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

@ICPlanetologist Nothing a little jitter removal can’t fix! Embrace the ocean Steve!

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Geomorphology from a rover is cool and all but have you tried it from a boat?

[Dr. Divya (offline - click 🔔) @Divya_M_P]

🪐 Will you be enrolled at a PhD program in the UK by Autumn 2024?

☄️ Join us for the FREE & virtual STFC Planetary Surfaces Summer School! With lectures, practica, career panels, a film screening, & more.

Register by 2 August: https://t.co/jLHBnIuSe3

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

the answer was @superflyrecords on Rue Notre Dame de Nazareth! A very well curated selection with nice and short descriptors. It was hard not to buy everything.

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Anyone got a shop for Soukous records in Paris?

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

Home also to another imaging spectrometer, the iconic OMEGA

[Dr Roger Blue Stabbins (スタビン ロジェ ブルー) @rbstabbins]

It was a good day to visit the @LesiaAstro Paris Observatory, home of the MIRS imaging spectrometer for MMX