Tuesday, July 17, 2018

Crescent Nebula NGC6888

In the constellation Cygnus we find the emission nebula "Crescent Nebula" (NGC6888). It's located at a distance of 5000 light years and can be best observed with OIII, UHC or H-alfa filters. For this picture  no filters are used. The picture is a combination of 4 frames, with a total exposure of 222s.


Dumbbell Nebula M27

The Dumbbell Nebula (Messier M27 - NGC 6853) is a Planetary Nebula located in the constellation Vulpecula. The Nebula is about 1300 light years away from Earth.
The picture is taken using NikonD7500 with refractor TLAPO 80/480 f/6.  Two frames, each 30s are stacked with Deepskystacker.


10 Days to go for the Lunar Eclipse

Counting down for the Lunar Eclipse which can be observed in Belgium and other parts of Europe. Crossing fingers for a cloud free evening sky :)

Sunday, July 15, 2018

Andromeda Galaxy M31 M32 M110

Nikon D7500 TLAPO80/480 f/6 ISO6400 1200s

Andromeda Galaxy M31, M32 & M110

The Andromeda Galaxy M31, M32 and M110 was photographed using Nikon D7500 and TLAPO80/480 f/6 with settings ISO6400 and 30s exposure time. Stacking done with Deepskystacker and final editing using CS4.


Saturday, July 14, 2018

104 Spotless Days & Limb Darkening




The picture of the Sun today shows again a Sun without any sunspots. So far this year, 104 spotless days are registrated; in 2017, it took a full year for those 104 spotless days. This means we are heading towards a solar minimum.

The picture also shows the Sun is more bright at the center and darker towards the edges. This phenomena is called Limb Darkening - which I will explain later (when I have time :)


Sun with SolarMax III and ASI224MC


The Sun today around UT08h45 observed with SolarMax III (f/5.7 70/400 DS BF15) and ASI224MC for 60s. This time true color stacking providing a red color instead of BGGR blue color (see my blog here).