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Monthly Archives: May 2021

Sunspot AR2824

This is a view of the sun in hydrogen alpha showing AR2824 taken on May 25. Also visible are a couple of loop prominences.

Sunspot AR2824

I took a look at the AR2824 sunspot today. Appearances can be deceptive, this small, peaceful looking sunspot is actually the one that has been so active recently, unleashing a sequence of solar flares unlike anything we’ve seen in years. In only 24 hours, NASA’s Solar Dynamics Observatory recorded 10 C-flares and 2 M-flares. The region was still active yesterday and made for an interesting sight in both Ha and white light. In the images the umbra and penumbra are clear with evidence of a light bridge and with lots of pores in the solar surface of the region. Get your solar scopes out and have a look while we have the chance – who knows, it may flare again.

Image was taken in Roberts Creek at 1300 May 22 with PGI Chameleon, Herschel Wedge, ED80, stacked with AS3.


Explore the Universe Challenge: Summer Targets

At 7:00 PM, 2021 June 11, online on Zoom, the Sunshine Coast Centre of the RASC presented the Explore the Universe Challenge. Sunshine Coast Member Charles Ennis introduced the RASC’s Explore the Universe Program and taught viewers how to find the objects in the Summer viewing portion of the program. Later this year Charles will come back on Zoom to teach the Fall and Winter segments. You can check out the YouTube video here. Here is the PDF:

The RASC Explore the Universe program (awarded since 2002) is aimed at the novice visual astronomer. Those who complete the program may apply for a certificate and pin—this is open to all, RASC members and non-members alike. This program will:

  • Stimulate an interest in observational astronomy.
  • Introduce good observing practices and techniques.
  • Provide an introduction to all aspects of visual astronomy including stars and constellations, lunar, Solar System, deep sky, double stars, and some optional activities, including variable stars.
  • One of the special features of this program is that it can be completed entirely using binoculars and the unaided eye. 

NOTE: If you choose to use a telescope, automatic (GoTo) functions are not to be used.

A choice of objects is provided so that you can start the program at any time of the year and easily complete the requirements in three to six months time.

Want to get started? Download the Explore the Universe program requirements and start your observing program today! All you need to do is find half of the 110 objects on the program list.

Téléchargez le programme Explorez l’Univers en français et débutez vos observations dès aujourd’hui.

If you are looking for a guide to getting started, consider purchasing the Explore the Universe Guide (2nd Edition) in the RASC store.

Speaker for May 2021: Ray Kostaschuk

On Zoom at 7 PM (Pacific) on Friday, 2021 May 14, the Sunshine Coast Centre of the RASC presents Ray Kostaschuk, a geoscientist specializing in sedimentary processes in rivers, lakes and estuaries. He was a Professor in the Department of Geography at the University of Guelph for 25 years. He is currently an Adjunct Professor in the School of Environmental Science at SFU where he works with Professor Jeremy Venditti and graduate students on sedimentation in the Fraser River. His topic will be: Rivers of the Solar System

A river is a channel system constructed by naturally flowing liquids moving towards an ocean, sea, lake or another river. Rivers create diverse drainage patterns and a stunning variety of erosional and depositional landforms that provide important clues to the climate and geological framework of the landscape. Active rivers flow on Earth and Titan and ancient rivers are common on Mars and Venus. Rivers on the rocky planets are created by water flowing over rock or sediment but on Titan the rivers consist of liquid hydrocarbons eroding a crust of water ice.  

You can view this presentation here: