Bright Sundog

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Very bright Sundog this morning #Aarschot

Tumbling Satellite flares every 3-5s

Many times I took pictures of Iridium flares and during my night observations I see hundreds of satellites passing by. However on April 19 around 21UT I saw for the first time a satellite flashing up more then once. I start reading a bit of this phenomena and talked to some people about it and this seem to be a tumbling satellites or tumbling pieces of rockets.

Yesterday, after taken pictures of the ISS I saw at the zenit another tumbling satellite which I was able to photograph. Unfurtunately, setting was already done for Jupiter and Moon, so no ideal picture. The passing happened from South-South-East towards North-North-West at exactly 21h05m35s at the Zenit. Enlarging the picture shows the satellite trail broken 2 times during and exposure of 10s. This means the flares happen between 3-5s. I looked into different databases with no real outcome but this is a potential list of tumbling satellites :

- Iridium 90
- IGS 5A
- Cosmos 1356
- SL-16 R/B
- Iridium 911Tum

Astronomical Twilight

As from next weekend untill the weekend of July 21st, skies will not get fully dark as the Sun will not go below 18° of the Horizon. This is what's called Astronomical Twilight. I was hoping to take some pictures past night during the 30 minutes of "total darkness" but clouds start covering the sky.

Moon and Jupiter - May 26,2018 UT20h30 

Nightscape ISS during Twilight

Passing of ISS during twilight and high clouds. So difficult to get the contrast of ISS on the picture.

Nightscape Certificate

Proud on my Nightscape Certificate.

Urania Afsluiting Werkjaar 2017-2018

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Straks Om 10h start het afsluitingsmoment van het werkjaar van de volkssterrenwacht Urania. Op de agenda staat een voordracht over Space-X en daarna tijd om wat bij te praten met de collega's.

Nightscape ISS

ISS crossed the sky above Averbode at UT 21h38. In total 4 pictures stacked using CS4.