All posts by jhissong

July 14th, 2018 – Variable Stars

When you look up at the stars, they seem to shine with a steady light.  However, did you know that there are some stars that change in brightness?  These types of stars are called Variable Stars and each of have their own personality in how they change in brightness.  Variable Stars are very important to Astronomy as they assist Astronomers in understanding stellar evolution and determine the distances of far off galaxies.

Long time Columbus Astronomical Society member and Past President of the Society, Jason Hissong will be presenting on these fascinating stars at our next meeting.

Coffee and Donuts provided!

 

May 12th, 2018 – Astronomical Illusions, Myths, and Misconceptions

Please join us to hear the Director of the John Glenn Astronomy Park and long-time member, Brad Hoehne, speak about some common astronomical optical illusions that even experienced stargazers fall prey to, some historical “memes” that have entered the popular consciousness, and things that amateur astronomers commonly believe that might not be so.

Also, Amateur Telescope Maker Jason Hissong will be available for our Ask Me Anything series. He will be on hand in the Perkins Library at 7:30 to answer questions about Telescope Making.

Coffee and Donuts will be provided!

April 14th, 2018 – Getting Light from the Night

Society Member Isaac Cruz

Please join us for this month’s special guest speaker! Astrophotographer Isaac Cruz presents “Getting Light from the Night”.

This presentation will introduce the concept of histograms as a tool for image analysis and image processing.  We will demonstrate how to process a raw astronomical image using PixInsight, a dedicated image processing program.  To expedite the processing we will follow an abbreviated workflow that will illustrate the basic steps to be followed to successfully process a variety of astronomical images.

Image result for Pixinsight logo

Coffee and Donuts will be provided.  We hope to see you there!!!

March 10th, 2018 – Deep Sky Imaging Primer

Astrophotographer Ted Saker

Are you interested in imaging Deep Sky objects like nebula and galaxies but are struggling with where to begin? Do you have questions about gear, equipment and software? Join us for Astrophotographer Ted Saker’s presentation as he reviews best practices and techniques he has acquired over the years to help you achieve optimal results! Refreshments and donuts will be available!

As with all CAS meetings, no tickets are required to attend.

February 10th, 2018 – Field Trip Through the Solar System: Mercury to Pluto

Please join us at 8:00pm, February 10th, 2018 at Perkins Observatory for a presentation by James St. John from the Ohio State University at Newark Geology Department. James will discuss the geology and features of all the planets and major moons or our Solar System.  Plus hints of some major changes in the configuration of our Solar System.  You will not want to miss it!

Refreshments will be provided and if it is clear, please feel free to bring a telescope or binoculars to observe with afterwards.

CAS Unveils New Official logo

Columbus Astronomical Society Official Logo

The Columbus Astronomical Society would like to reveal our new official logo! Our logo represents several items of interest:

  • The constellations in the background show the sky around the constellation of Cassiopeia which is abbreviated as “CAS”.
  • The round logo represents looking through an eyepiece through a telescope and focusing on the State of Ohio.
  • The bottom of the state outline represents the dark foreground of trees and hills like what we see in the Hocking Hills. Our club has a long standing relationship with the Hocking Hills State Park.
  • The “star” in the middle represents Columbus, OH, our home. It also is the location, in reference to the background constellations, of the strong radio source of Cassiopeia A.
  • 1947 is the year of our founding.
  • And finally, the gradient color of the state represents the twilight sky: the transition between night and day.