Annual OTAA Convention July 31

The Cuyahoga Astronomical Association (CAA) is pleased to announce that our 2021 OTAA convention at Letha House West will take place July 31. The Convention is intended for members of the CAA and members of other Northern Ohio astronomy clubs, not the general public. This year we plan to start the event at 2:00 p.m. We have a few hours scheduled for relaxation and socializing prior to our potluck dinner which is planned for 5:00. Following dinner, around 6:00, we plan to raffle off our door prizes. After the raffle there will be time to set up telescopes for evening observations, weather permitting. The club is looking forward to hosting the event after a one-year pause!

CAA will provide hot dogs, buns, and condiments; however, in order for this event to be a success we invite each attendee to participate in the potluck by bringing a dish of their choosing to share. Additionally, please bring your own beverages (no alcohol) as none will be provided.

Door prizes include a variety of framed artwork, some brand-new equatorial mounts, a slightly used telescope, and the grand prize is a brand-new, in-box, 127mm Celestron Newtonian on an equatorial mount donated to the club (~$180 value): https://www.celestron.com/products/powerseeker-127eq-telescope

Here is a summarized schedule:

2:00 PM: Official Start

5:00 PM: Dinner

6:00 PM: Raffle

Observing to follow, weather permitting

Astronomers make first clear detection of a moon-forming disc around an exoplanet

This image, taken with the Atacama Large Millimeter/submillimeter Array (ALMA), in which ESO is a partner, shows wide (left) and close-up (right) views of the moon-forming disc surrounding PDS 70c, a young Jupiter-like planet nearly 400 light-years away. The close-up view shows PDS 70c and its circumplanetary disc center-front, with the larger circumstellar ring-like disc taking up most of the right-hand side of the image. The star PDS 70 is at the center of the wide-view image on the left. Two planets have been found in the system, PDS 70c and PDS 70b, the latter not being visible in this image. They have carved a cavity in the circumstellar disc as they gobbled up material from the disc itself, growing in size. In this process, PDS 70c acquired its own circumplanetary disc, which contributes to the growth of the planet and where moons can form. This circumplanetary disc is as large as the Sun-Earth distance and has enough mass to form up to three satellites the size of the Moon. Credit:ALMA (ESO/NAOJ/NRAO)/Benisty et al.

Smoke gets in our “eyes”

Smoke-Tinted Moon. July 18, 2021. Photo by James Guilford

Although high in the night’s sky, our waxing Gibbous Moon has been decidedly orange. Smoke, high in the atmosphere from North American wildfires, has tinted what should be a bright white Moon in the colors of moonset. Ruddy or not, we love that we can see mountain peaks and crater edges peeking up from the darkness just left of the sunlight terminator line.

Image Credit: Environment and Climate Change Canada

July meeting: A visit to the Very Large Array!

The July 12, 2021 membership meeting of the Cuyahoga Astronomical Association (CAA) will take place via the Zoom online service beginning at 7:30 p.m. Join Alan Studt and Gale Franko as they relive their visit to the Very Large Array (VLA) in New Mexico. The site of these giant, moveable radio telescopes is where the movie Contact, was filmed.

Attendees may join the Zoom meeting beginning at 7:20 p.m. the nights of CAA scheduled meetings, and meetings begin at 7:30.

The evening will begin with introductions and a program by the featured speaker. The talk will be followed by the monthly membership business meeting, typically concluding at about 9 p.m. Guest attendees are welcome.

To attend:

You can either “Phone in” or watch and participate via “Zoom Video”.

Phone In:  Just dial:  1-312-626-6799  (Chicago number)

You will be required to enter our meeting number:  954 8268 6049

Zoom Video with video and audio, on your web browser. (No camera required)
https://zoom.us/j/95482686049

Or download the desktop application from: https://zoom.us/download#client_4meeting