November 2016 was about 4°C colder than November 2015. I registrated 11 air frost days this month versus 6 last year. Rainfall is comparable with last year, aswell as the wind.
Pascal Hilkens Astro Home Page
Saturday, December 3, 2016
Wednesday, November 30, 2016
The sun today - Nov 30, 2016
Picture of the sun taken with Coronado PST40 and zoom 24mm - afocal. Editing done with CS4 and comparison with SDO 304.
Almost perfect! Airplane in H𝛂
Temperature this morning was about -8.8°C and the sky is clear with a few clouds high in the sky. So time to make some pictures using my Coronado PST. Unfurtunately no sunflames could be observed but I could take a picture of the sun with an airplane in H𝛂. Almost perfect :)
Monday, November 28, 2016
Startrail above abbey of Averbode
Clear sky this evening but real cold with -2¨C at this moment. The picture shows the abbey of Averbode with it's startrail. Picture is made of 60 photo's each with an exposure of 30s. Stacking was completed using Startrails and modified using CS4.
Saturday, November 26, 2016
Moon & Jupiter at sunrise
On the morning of November 25th, both the Moon and Jupiter could be observed 30° above the south-eastern horizon. The Moon is waning crescent and 15% illuminated, Jupiter is seen 3° west of the moon. Picture taken around 7h50 local time.
Saturday, November 19, 2016
Reverse colors of double rainbow - Alexander's band - Supernumerary band
Using CS4 to highlight the colors and to enhance the contrast shows the revers order of the colors of the second rainbow. It also shows much better the darkness between the two rainbows, which is called Alexanders dark band. And finally the picture shows also the green band underneath the violet color of the first rainbow which is called a supernumerary band.
Wow a Supernumerary Double Rainbow
According literature a supernumerary rainbow is defined when below the first rainbow more colors are seen beyond the normal colors. As seen on the pictures a "white" band is seen below the violet color which when enlarged consist of faint colors of green and violet. So we see from the outside to the inside red, orange, yellow, green, blue, indigo, violet and then green and violet.
As I was not sure and did ask for a second opinion to Frank Deboosere, our national weatherman and amateur astronomer. And he confirmed the supernumerary band aswell.
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