ptsouth97 (56)in #running • 3 years agoWeek 5, Session Three: 11 mile interval runWednesday, June 16, 2021 Orlando, Florida 76 degrees Farenheit (24.4C), 98% humidity, overcast 38 days to Red Top…ptsouth97 (56)in #running • 3 years agoWeek 5, Session Two: 10 mile general aerobic runTuesday, June 15, 2021 Orlando, Florida 76 degrees Farenheit (24.4C), 97% humidity, rainy 39 days to Red Top…ptsouth97 (56)in #steemstem • 6 years agoSwan SongFigure 1. Henrietta Swan Leavitt. Credit: (Johnson 2005) Henrietta Swan Leavitt was born on the Fourth of July in…ptsouth97 (56)in #steemstem • 6 years agoUsing Stellarium to Control a TelescopeOne of the most awesome features of modern amateur telescopes is that they can connect with a computer to allow…ptsouth97 (56)in #steemstem • 6 years agoBinningFigure 1. Examples of binning. Credit: Templeton & Beck 2014 Binning groups pixels together which has the effect…ptsouth97 (56)in #steemstem • 6 years agoImage calibrationImage calibration is simply the removal of the anomalies from the camera sensor and imperfections in the optical…ptsouth97 (56)in #steemstem • 6 years agoNew twist on classical novaeWe've all heard of a supernova, but what about classical novae? These close astronomical cousins are similar in…ptsouth97 (56)in #steemstem • 6 years agoJupiter-sized exoplanet detectedDavid et al. 2019 recently reported the detection of exoplanet V1298 Tau b. The first part of the name (i.e., V1298…ptsouth97 (56)in #steemstem • 6 years agoMultipolar Planetary NebulaNo, planetary nebulae have nothing to do with planets. Instead, these are low and intermediate mass stars in the…ptsouth97 (56)in #steemstem • 6 years agoMysterious "bullets" from V HyaFigure 1. The carbon star V Hya displaying a "bullet", a collimated jet-like emission from its center of mass.…ptsouth97 (56)in #steemstem • 6 years agoLinearity testingFigure 1. CCD bucket analogy. Credit: Howell 2006 Each pixel of a CCD sensor is like a bucket, but instead of…ptsouth97 (56)in #steemstem • 6 years agoTECMOOne of my goals this year is to build a remote observatory for astronomical imaging equipment: The Elizabeth Crosby…ptsouth97 (56)in #steemstem • 6 years agoThe Puzzle of PolarisAs our compass to the north, Polaris is one of the most famous stars in the night sky. However, in a recently accepted…ptsouth97 (56)in #steemstem • 6 years agoHistorical solar observationsFigure 1. Photograph taken using Ca II K filter shows features in the sun's atmosphere affected by magnetic activity.…ptsouth97 (56)in #steemstem • 6 years agoBackyard amateur helps make a big astronomical discoveryAstronomy is one of the few fields where amateurs can have a meaningful impact. I've never heard of an amateur nuclear…ptsouth97 (56)in #steemstem • 6 years agoSurvey confirms 81 new variable starsAs a member of the AAVSO , variable star astronomy is near and dear to my heart. Astronomers at the Moletai…ptsouth97 (56)in #steemstem • 6 years agoPeering into a pre-stellar coreUnder the influence of gravity, stars are born from collapsing clouds of gas and dust. These dense regions form a…ptsouth97 (56)in #steemstem • 6 years agoBig Bad Binaries and Other X-ray SourcesFigure 1: Hubble Space Telescope image of nebula around Wolf-Rayet star WR 124. Credit: wikipedia Yesterday I…ptsouth97 (56)in #astrosteem • 6 years agoChemical Make-up of Eclipsing Binary SystemsFigure 1. Artist's rendering of a contact binary star. Credit: ESO/L. Calcada In a recent submission to the…ptsouth97 (56)in #astrosteem • 6 years agoVariables Found in White Dwarf SurveyFigure 1. Color-color diagrams showing the 49 variable objects as well as the non-variable objects. Credit: Dame et…
