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Avdhoeven last won the day on January 25 2016

Avdhoeven had the most liked content!

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About Avdhoeven

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  1. It is a while since I took my last astro-image, but partially because of the price that my son won in the astronomy photographer of the year competition, I was stimulated again to pick up some imaging. This weekend I took three nights of the Eastern Veil (2 nights Ha and 1 night OIII). I was nicely surprised. Time to pick up imaging again, when time permits. NGC6995 Eastern Veil Nebula by Andre van der Hoeven, on Flickr
  2. Thanks for the nice replies. It was so nice. Davy even got in a national news site with this We also had TV in our garden (sorry, it's in Dutch):
  3. Well, we returned yesterday from London, and I'm so proud. Davy has won the 'young astronomy photographer of the year' award. He's so happy and never dared to dream of this. He's already thinking about his next project All winners: https://www.rmg.co.uk/whats-on/astronomy-photographer-year/galleries/2019/overall-winners He was even on Dutch television in the national youth journal https://jeugdjournaal.nl/uitzending/44233-avondjournaal.html from 09:18
  4. The "Soap Bubble Nebula" is the common name for the planetary nebula PN G75.5+1.7. This nebula was only discovered by amateur astronomer Dave Jurasevich on July 6th, 2008. It was independently confirmed and reported by Keith Quattrocchi and Mel Helm on July 17th, 2008.PN G75.5+1.7 is situated in the constellation of Cygnus, very near the Crescent Nebula (NGC 6888). It is embedded in a large diffuse nebula which, in combination with its low surface magnitude, is the reason it was not discovered until recently.NGC 6888, also known as the Crescent Nebula, is a cosmic bubble about 25 light-years across, blown by winds from its central, bright, massive star. This image uses narrow band image data that isolates light from hydrogen and oxygen atoms in the wind-blown nebula. The oxygen atoms produce the blue-green hue that seems to enshroud the detailed folds and filaments. Visible within the nebula, NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun's mass every 10,000 years. The nebula's complex structures are likely the result of this strong wind interacting with material ejected in an earlier phase. Burning fuel at a prodigious rate and near the end of its stellar life this star should ultimately go out with a bang in a spectacular supernova explosion. Found in the nebula rich constellation Cygnus, NGC 6888 is about 5,000 light-years away. (source: APOD)I decided in 2015 that I wanted to see if I could catch this very faint nebula with my 9.2 cm refractor. I started working on imaging this in 2015, but then I only got 4 images before weather interrupted the imaging sequence. In 2016 I was able to catch more data of this region to see what would come out. In August 2016 I took for 5 days in a row images of this nebula in H-alpha and OIII. In 2018/2019 I decided to expand the Ha dataset further and succeeded in the course of these two years to gather much more Ha-data.Equipment:Telescope: TMB92SSCamera: QSI583wsMount: Skywatcher NEQ6Exposures:H-alpha: 115x900s (29h)OIII: 32x1200s (11h)Total: 40 hours NGC6888 Crescent and Soap Bubble Nebula by Andre van der Hoeven, on Flickr
  5. So cool. Diplom ceremony last week at the highschool where I teach physics. Imagine yourself walking in a space suit on a stage of a 1500 seat theater with an image of m106 on the screen in the background that you processed yourself using data from several sources. Well that was one of my coolest moments (yes, that's me in the suit...)M106 image credits: Processing and assembly: André van der Hoeven (overall processing) /Roberto Colombari (color layer used)/Robert Gendler (color layer used)/Jay Gabany (H-alpha)/Fabian Neyer (nebulosity data) Data: Hubble Legacy Archive, Canadian Astronomy Data Center, Japanese National Observatory, Tzec Maun Foundation, Jay Gabany, Giovanni Paglioli, Fabian NeyerFor all info on the image you can look here: http://www.astro-photo.nl/deepsky/galaxies/m106-high-resolution-image-amateurpro-combination?fbclid=IwAR2EIfAENyW76rRFHguymazb-XZkamaSV20d3tXn-jgo9TslMR-IPGNOXvw
  6. This image shows an image of the full moon made with a DSLR camera. Using saturation tools in photoshop the colors in the image were magnified by a huge factor showing the geological structures on the lunar surface. These colors are not artificial, but actual lunar surface colors that are strengthened many times. It's nice to see for example the rays coming from Tycho and the blueish materials surrounding younger craters on the surface. Also the lava fields can be clearly distinguished by their brownish colors.
  7. IC405, aka the Flaming Star Nebula. This nebula in Auriga is lighted by the star AE Auriga. It's a huge complex of ionised gas that shines brightly in H-alpha. The shapes are almost art-like in this beautiful part of the sky. Exposures: 7x900s / 32x1200s (10.4h) Image scale: 2.2"/pixel IC405 Flaming star nebula by Andre van der Hoeven, on Flickr
  8. Davy, my son of 11, joined the astrophotographer of the year competition last year and wanted to join again this year. However, he wanted to make a deepsky recording now, so in November we went together to see if we could find a nice project that he could go on with. He went to search on the internet to see which object he wanted to photograph and came with the rosettenevel. He studied several photos and then I gave him the astroplanner software and let him determine how to put the nebula in image. Then we started in November and then together we took 3 nights of recordings of this nebula in ha, oiii and sii. The advantage of SGP is that even a child can do the work if all is well introduced SGP just runs off its program and you have a nice folder with recordings in the morning. This data I had edited myself before to see if the quality was ok, but now I wanted him to do it himself. That's why I first showed him with another recording how to process an image in APP and then combine to an RGB recording. Then how to do with PS some more color corrections to get to a final result. After that, I gave him the dataset (lights, flats, bpm and bias) and then let him go ahead. This is what came out... Sometimes as a father you can be so proud
  9. Back into the past... Because of the lack of good weather and new data it's sometimes nice to look a bit back. When browsing through my old images I thought: "What is the image in the last few years that I liked the most?" I think it was this one. It shows Barnard 344 in the constellation of Cygnus, near Sadr. This one even became an Apod in april 2015: https://apod.nasa.gov/apod/ap150422.html Especially the colours in the image and the nice contrast between the nebulae and the area without gas/dust is what I liked. I really hope that when weather permits I can take some day an image like this again, because the sky is so beautiful. Clear skies to you all!
  10. This image shows a very deep exposure of the M13 Hercules Globular Cluster. For this image data was used taken by a TEC140 and by a CFF185 telescope remotely in Spain. In the image background galaxies up to mag. 23 can be seen. Processing was done with APP with drizzling and photoshop. This resulted in a very high resolution image of this beautiful cluster. I really recommend to click through to the original image to see it in its full detail... M13 Hercules globular cluster by Andre van der Hoeven, on Flickr Exposures: CFF185/SBIG-STL11000 Lum: 19x180s + 17x600s TEC140/QSI583ws Lum: 19x300s + 10x600s RGB: 3 x 12x300s
  11. The Rosetta nebula is a very nice winter object to observe when the nights lengthen here in the Northern Hemisphere. This image was taken, in cooperation with my oldest son (he did the choice of the object and the composition of the image) and helped with imaging the data. Taken with my TMB-92 with a QSI583ws with astrodon narrowband filters. Ha: 19x900s OIII: 25x900s SII: 21x900s Total: 16,3 hours
  12. There was still some improvement possible
  13. My son got the third place in the young category of the competition. I was a very proud dad!
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