NEW Upcoming ARISS SSTV Event from June 21 - June 26

Next week, the ARISS team will be transmitting SSTV images continuously from June 21 until June 26. The blog http://ariss-sstv.blogspot.com/ mentions that the images will be related to some of the amateur radio activities that have occurred on the Space Shuttle, Mir space station and the International Space Station.

The schedule start and stop times are:

Monday, June 21 – Setup is scheduled to begin at 09:40 UTC (transmissions should start a little later).

Saturday, June 26 – Transmissions are scheduled to end by 18:30 UTC. 

The downlink frequency will be 145.800 MHz. Those that recently missed the opportunity during the limited period of MAI experiment 65 transmissions should have numerous chances over the 6 day period to capture many (if not all 12) of the images.

Partial Solar Eclipse June 10

Composition of the partial solar eclipse of June 10.
Setting: Nikon D7500 with TAL200K f/8.5 and solarfilm ND3.8, ISO100 and 1/3200s.

Partial Solar Eclipse in different colors

The partial solar eclipse above Belgium was observed using solar continuum filter, solar filter ND3.8 and Ca-K line filter.

Setting : Nikon D7500 and TAL200K f/8.5. Final editing using CS4.

Some more picture of NLC on June 9, 2021

My first observation of  NLC was about UT21h00. I kept on looking untill UT22h00.

Noctilucent Clouds Above Averbode

This evening some bright noctilucent clouds above north-western horizon. They reached a max of 35° above the horizon.

 

NLC

Currently NLC above Averbode (Belgium). Picture taken with iPhone 11

What is polarization? Event Horizon Telescope

The Radboud University Nijmegen made a youtube video explaining the phenomenon of polarization of light. This video, made by "director" Sara Issaoun,  helps understanding the recent picture from the black hole in M87.

All details about the recent image of the magnetic fields around the black hole in M87 can be found on the webpage of the Event Horizon Telescope.