Ring Nebula M57 in RGB, H-alpha and OIII

The famous Ring Nebula M57 (planetary nebula in constellation Lyra and about 2500

lightyears away from Earth) was photographed using H-Alpha en O-III filters. 

Setting : Nikon D7500 with TAL200K f/8.5; H-alpha ISO3200 and ISO6400 (total 25x90s), OIII ISO400 20x60s and RGB ISO 400 20x60s ISO. Raw pictures are stacked using APP and the individual sessions are stacked using CS4. Final editing with DeNoisse AI.

70.000 Visitors

Cool! ..... reaching 70.000 visitors for my astroblog. Thank you all!

Sun in OIII and Ca-K

In the late afternoon I took some pictures of the Sun with Sunspots AR2859 and AR2860.

Setting : Nikon D7500 and TAL200K with Solarfilm ND3.8 and ND3.8 with OIII filter and ND3.8 with Ca-K filter

Green Flash

I was looking at my pictures taken taken during my vacation at the Belgian Coast @De Panne. On July 18th I was able to take a picture of Green Flash - see my blog  but  also on July 17th. When looking at the details of the those pictures I saw aswell a Green Flash. This time the flash was observed a little above the horizon. The Green Flash on July 18th was a little higher above the horizon. 

To conclude: I was able to photograph twice a Green Flash during my holliday. Really Cool!

Editing Sun H-Alpha

I reworked my picture of the Sun which I made yesterday - see this link
The bright and enormous prominence has now more contrast. 

Sun in H-Alpha

This afternoon I observed the Sun in H-alpha using my SolarMax III d70/400 f/5.3 DS BF15. The spotless sundisk showed a couple of big filaments and one huge prominence. 

The picture was taken with Nikon D7500, ISO400 and 1/320s. Editing using CS4.

NOSS Double in Milky Way

Only one bright perseid meteor and a couple of faint ones during an hour observation from UT20h15-21h30 on August 13th. As the sky was very clear I decided to take some pictures of the milky way using my wide field lens 10-24mm. It's clear that the sky is overloaded with satellites and satellite debris as all of my pictures have at least one satellite trace. The picture shows a double trace of the Naval Ocean Surveillance System. This "NOSS Double" is formed by NOSS 3-7(A) and NOSS 3-7(R).