Kees Scherer

Holmberg IX - Wikipedia

That is PGC 28757 / Holmberg IX en.wikipedia.org/wiki/Holmber...

4 seizoenen kastanjeboom

4 seizoenen kastanjeboom.

(PDF) Recognition and classification of the cosmic-ray events in images captured by CMOS/CCD cameras PDF | Muons and other ionizing radiation produced by cosmic rays and radiative decays affect CMOS/CCD sensor. When particles colliding with sensors... | Find, read and cite all the research you need o...

Worms are cosmic ray traces with worm like shape. See: www.researchgate.net/publication/...

Traces on long exposure M31 image

Airplanes, satellites, hot pixels, Muon's, Worm's/ Gamma rays.... Normally we remove all the traces of cosmic radiation and human Engineering visible in the Sky. Shown here in this stack of 223x300 second (Messier 31) exposures made without fancy statistical cosmetic outlier removal.

Rembrandt, zelfportret in het Mauritshuis.

Rembrandt, zelfportret in het Mauritshuis met uitzicht op het Torentje van de Minister President.

Rosette Nebula HaRGB

Rosette Nebula Ha

Rosette Nebula HaRGB 17x900sHa,64x120sec RGB, Esprit 100/QHY16200 CCD. #rosette #astrophotography

"Oops, something went wrong?"

Andromeda galaxy

Messier 31, the Andromeda Galaxy. 432x300 second exposures, 36 hours (LRGB). Esprit 100/QHY16200 CCD.

Flaming star nebula.

The Flaming star nebula, IC405 in Auriga. Esprit 100/QHY16200, RGB, 267x240 seconds (17.8 hr.)

IC2177, Seagull nebula

Seagull Nebula (IC2177). Esprit 100/ QHY16200 CCD+Ha filter, Canon 6Da. 10 hours total.

Taurus molecular cloud 1

Taurus Molecular Cloud 1. Esprit 100 /QHY16200 CCD + R,G,B filters, 600 second subs, 34 hours total.

Orion, 40mm lens, Canon 6Da

Orion, 54x 120sec, 40mm lens/ Canon 6Da.

Crepuscular rays at dawn.

Crepuscular rays. Foto gemaakt vlak voor zonsopkomst.

M31, Andromeda galaxy

M31, Skywatcher Esprit 100/ QHY16200 CCD.

North America Nebula

North America Nebula, NGC7000. I like the blue, Kamala blue....

Orion nebula

This is the full Messier 42 (Orion Nebula) view also showing the NGC1999 region at lower right. HDR to compress the dynamic range. 3 stacks made with 30, 120 and 600 second exposures (488 in total) with a total integration time of 24.6 hours.
Esprit 100 f5.5/ QHY16200 CCD @ -20C

Harbour Ponta Delgada, night.

Ponta Delgada, acores.

And after a while, your images show up in all sorts of places. No problem for me as all my images have free to use status, so it is fun to see.

Astronomy Magazine

APOD 14 oct 2019.

Sky at night...

The filter wheel

The camera connectors

QHY16200 CCD camera used for my images.