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#spectroscopy

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A star with a weird color - Nova Lupi 2025 (V462 Lupi)

1st photo is not annotated. Can you find the nova?

2nd photo is annotated.

3rd photo was deliberately mis-focused so that stars were larger disks instead of small points. This makes it easier to see the color.

Note that there are plenty of orange stars and plenty of blue stars...but the nova has a unique color. To my eye it's a pale purple.

Why does the nova have a weird color?

4th image was taken from facebook.com/photo/?fbid=17712 it's a spectrum of the nova. Most stars have a blackbody radiation distribution, but novae (that's the Latin form, plural) have strong emission lines at discrete colors. That can make a weird color compared to most stars.

Image taken with a camera on a fixed tripod.

en.wikipedia.org/wiki/V462_Lup

#BrightEyesTTM: #OpenSource #FPGA-based multi-channel time-tagging module (#TTM) for democratising single-photon (SP) #microscopy:

-parallel multiple #SP event tagging precision: 30 ps
-multiple synchronisation event precision: 4 ns
-requires #LabVIEW
-cost ~$3000

Article: doi.org/10.1038/s41467-022-350
Web: brighteyes-ttm.readthedocs.io/
GitHub: github.com/VicidominiLab/Brigh
#DIYbio #lab #instruments #LSM #FLISM #FLFS #fluorescence #spectroscopy #imaging #Python

An #OpenSource, low-cost multinuclear #NMR #spectrometer operating in the mT field regime:

-high spectral resolution
-arbitrary #RF pulse programming
-requires #LabVIEW
-cost: k$ 20 (mainly PXI waveform generator & digitizer alone)
-cost could be driven down by half using a home-built RF amplifier made with high-power operational amplifiers

#NOpenAccess paper: doi.org/10.1016/j.jmr.2021.107
#DIYbio #DIYchem #chemistry #analytics #ULF #spectroscopy