Venus-Jupiter Conjuction

Venus passes south of planet Jupiter this morning. I got up very early and went to Schaffen to get a free eastern horizon. Images mad with my Nikon D7500.

Wetenschap in beeld: Grootste raadsels van de natuurkunde

 

Speciale editie van Wetenschap in Beeld met de grootste raadsels van de natuurkunde. Ideaal voor deze periode en leest gemakkelijk.

Sunset

Sunset at the Northsea in De Haan

The Sun August 3 2025 Halpha, beta, HeID3, CaIIH/K, G-band and FeII/TiII

Sunday morning August 3, 2025 and a clear sky... at least untill noon time.

The objective was to adjust the collimator for both H-alpha as CaIIH/K using the Sol'Ex by James R.

I got some very good results with H-alpha,, HeD3 and H-beta. The Ca ion lines were a bit tricky and rather moderate. I will have this done next time.

Seeing conditions moderate but below 2,5arcs. Got into the G-band with good results and also for the FeII /TiII line. This last one has a simular structure as HeID3 line.

Setting: TLAPO80/480 with ASI678MM and Sol'Ex by James R.

Herschel Wedge

Sx/Sy < 1,1 and Tilt < 0,2°

Software: Sharpcap, Inti, JSolex and CS4

The Sun on July 26 in different wavelenghts H-Alpha, CaIIK, HeID3, H-Beta, FeI(c), FeII, TiII (4549) and G-band

This morning I imaged the Sun in different wavelenght using my new Sol'Ex by James R. The Sol'Ex was installed on 80/480 with Herschel Wedge.

Setting: TS TLAPO/80/480, ASI678MM with Sol'Ex 2nd Gen slit

Software: ShaprCap, Inti, JSolex and CS4

Imaging:

H-Alpha, CaIIK, HeID3, H-Beta, FeI(c), FeII, TiII (4549) and G-band.

Less then 400 days to Total Solar Eclipse August 12 2026 Spain

On August 12, 2026 we a total solar eclipse can be seen from Greenland over Iceland and Spain. I planned my trip to Spain and booked in the town Carrion de los Condes, which I passed on my Camino the Santiago in 2017. 

An Atlas of Spectroheliograms from 3641 to 6600 Å by Varadi Nagy Pal

Varadu Nagy Pal et al made An atlas of spectroheliograms using Sol'Ex (version 1 and ML Astro SHG 700), see link to this article.

The Solar Disks Spectrum atlas itself can be found via this link. A print screen is shown below

I think he imaged all spectrum lines which are processed using JSolex. 

Some nice features:

    

    By clicking on "##" of interesting wavelengths you get for all lines more details aswell as a personal        ranking.

    By clicking on the "eye" 1.1, 1.2,...of interesting wavelenghts you get each time more specific line on         interest. When clicking on it you go to the immediate wavelength and image

    By clicking on spectrum++ or diagram++ you switch between the spectrumline or diagram. 

This is great work by the team and will be an extra tool to use .. to find interesting lines but also to compare the images.