Now is time for the spectrum of a Wolf-Rayet type of star: WR-7 also catalogued as V1687 Cyg.
It is a WC, meaning that it is a star rich in carbon. We can actually "see" the carbon and helium inner layers, because the intense stellar winds and a pronounced unstable hydrostatic equilibrium have expelled its outer hydrogen layers to interstellar space. The broad emission lines are trademark of these types of stars.
#Astrodon #astronomy #spectra #spectroscopy #science #space #stars #variablestar

Before the end 2022 (according to my time zone), allow me to share a final light curve for the rotational variable Star HD 251108.

These observations we're requested by the AAVSO in their Variable Alert #798.

May this domingo 2023 be full of amazing #astronomy discoveries, fun, and awe!

#variablestar

First post in this network! Light curves for HD 251108, in response to AAVSO's Alert 798.

Data obtained with @lco 0m4 telescopes at Siding Spring & Teide observatories, and processed with Astrosource (Fitzgerald et al)

Observations are still in progress.

#Astronomy
#variablestar

Testing my new #script for #variableStar #observation. Seems to pinpoint it. :-) #astronomy #astrophotography

Just did my first #photometric #variablestar #observation #report to #AAVSO. A new chapter in my #citizenScience endeavour.