Observation by Alun Halsey: Halpha & Helium D3 spectroheliograms...

Uploaded by

Alun Halsey

Observer

Alun Halsey

Observed

2023 Apr 10 - 13:34

Uploaded

2023 Apr 10 - 21:45

Objects

The Sun

Equipment

Evostar 72ED with full aperture Hoya neutral density 16 filter
Sol'Ex SHG/QHY5III 178M
CEM60

Location

Reading Berkshire UK

Target name

The Sun

Title

Halpha & Helium D3 spectroheliograms 10th April 2023

About this image

Sky cleared mid afternoon allowing me to capture a few scans in the Hydrogen alpha and the Helium D3 (5875 A) wavelengths. used 16x sidereal speed on CEM60 to force the slit across the solar disk, Halpha image is a stack of four out of eight,stacked in Autostakkert and mild processing in Photoshop CS2. Helium D3 is a single image created in INTI using the free line tool,only processing was slight noise removal,both images have been flipped and rotated to correct orientation.

Files associated with this observation

Halpha_Helium-D3-SHG-230410.jpg (491.8 kB)

Like this image

Gerard Cauchi, Callum Potter, Robin Leadbeater, Anton Matthews

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