BlogHide Resteemsptsouth97 (56)in running • 4 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 Roaster race Today's run was 11 miles (18 km) at an average pace of 7:40 per…ptsouth97 (56)in running • 4 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 Roaster race Today's run was 10 miles (16 km) at an average pace of 7:50 per mile…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 1868 in Lancaster Massachusetts to George Roswell Leavitt and his wife, also…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 control by a wide assortment of software. Planetarium software is particularly cool…ptsouth97 (56)in steemstem • 6 years agoBinningFigure 1. Examples of binning. Credit: Templeton & Beck 2014 Binning groups pixels together which has the effect of making the group appear as a bigger single pixel as shown in figure 1 above…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 pathway. When taking astronomical pictures, this helps make the image "pretty."…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 many ways. They both involve a close binary system with a white dwarf and a main…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 Tau) represents the 1298th variable star found within the Taurus constellation…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 senior citizen phase of their lives. After they have puffed off their outer layers…resteemedastromaniac (59)in steemstem • 6 years agoSaturn - an amazing planet!I will describe for you this time the 6th planet of our Solar System. My favorite! Saturn has a lot to do with Jupiter, but the great ring system makes it unmistakable with any other solar system…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. Credit: Sahai et al. 2016 V Hya is a carbon star on the asymptotic giant…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 collecting rain water, these buckets collect electrons that are generated by the…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 Memorial Observatory (TECMO). This blog will be dedicated to covering the…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 article to Astronomy and Astrophysics, astronomer Richard Anderson explains…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. Credit: Stephen Ramsden We live in an era where both massive ground and…resteemedgavvet (78)in science • 6 years agoHow to make an impression.The Herschel crater on Saturn’s moon Mimas at this precise angle, in the photo below, shows just how much of an impression a body with a large amount of momentum colliding with another can make.…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 physicist, but amateur astronomers regularly make significant contributions…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 Astronomical Observatory (MAO) in Lithuania recently submitted their results on…resteemedastromaniac (59)in steemstem • 6 years agoAstronomical Observations #35: Crescent Nebula (NGC 6888)Welcome to the next episode of the review most interesting objects of the night sky. I am showing you those that we can see with an amateur telescope. This time we will make a small return to…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 pre-stellar (i.e., before star) core. Although much is known about this process, it…
