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ptsouth97
@ptsouth97
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https://github.com/ptsouth97
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2016-09-09 18:09
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ptsouth97
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7y
Swan Song
Figure 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 named Henrietta
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Using Stellarium to Control a Telescope
One 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 because
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Binning
Figure 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 (Templeton
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Image calibration
Image 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."
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New twist on classical novae
We'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 sequence
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Jupiter-sized exoplanet detected
David 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 boundaries.
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Multipolar Planetary Nebula
No, 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, the
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Mysterious "bullets" from V Hya
Figure 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 branch
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Linearity testing
Figure 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 incoming photons.
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TECMO
One 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 activities
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The Puzzle of Polaris
As 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 that Polaris
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Historical solar observations
Figure 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 space-based
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Backyard amateur helps make a big astronomical discovery
Astronomy 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 with their
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Survey confirms 81 new variable stars
As 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 the photometric
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Peering into a pre-stellar core
Under 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 is
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Big Bad Binaries and Other X-ray Sources
Figure 1: Hubble Space Telescope image of nebula around Wolf-Rayet star WR 124. Credit: wikipedia Yesterday I wrote about binary systems and their components. Sometimes those components can be massive,
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Chemical Make-up of Eclipsing Binary Systems
Figure 1. Artist's rendering of a contact binary star. Credit: ESO/L. Calcada In a recent submission to the Monthly Notices of the Royal Astronomical Society (MNRAS), astronomers described their findings
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Variables Found in White Dwarf Survey
Figure 1. Color-color diagrams showing the 49 variable objects as well as the non-variable objects. Credit: Dame et al. 2019 Astronomers recently submitted their findings identifying 49 new variable objects
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Tilted Exoplanets
On Earth, our seasons are caused by the 23.5 tilt in our axis relative to our orbit around the sun. Elsewhere in our solar system, the planet Uranus is well known to have a significant tilt in its axis
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Seven White Dwarfs
Figure 1: The original seven dwarfs. Credit: Encyclopedia Britannica Astronomers in Budapest recently submitted their findings on seven white dwarfs to Acta Astronomica. These seven white dwarfs are potential
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