Experimenting with Ca-K filter and ASI224MC

Three groups of sunspots are visible on the sun : AR2866, AR2863 and AR2864. My objective was to experiment with the Baader Ca-K filter and ASI224MC camera and this on the TAL200K f/8.5 telescoop equiped with solarfilter ND3.8.

I used capture software ASIstudio and focussing went easier then expected. The Ca-K filter shows much more details around the sunspots. Stacking was done using AutoStakkert! and editing using CS4.

Top :Left Visual - Right Ca-K Filter
Bottum : Left Visual ASI224MC - Right Ca-K ASI224MC

Saturn Rings Position 2018-2021

 

Pictures taken since 2018 which clearly show the change in position of the rings around planet Saturn.

Saturn and Jupiter with ASI224MC

A clear sky on Sept 2, 2021. Both Saturn and Jupiter visible low above at the south-eastern horizon. Seeing is moderate with some turbulance. 

Setting : TAL200K f/8.5 and ASI224MC, Barlow x2 and ADC. Capture software with ASI-studio.

Stacking using AutoStakkert! and editing with CS4 and DeNoise AI.

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!