Observation by Alun Halsey: Hydrogen Beta spectroheliogram 7th May 2...

Uploaded by

Alun Halsey

Observer

Alun Halsey

Observed

2023 May 07 - 15:45

Uploaded

2023 May 13 - 10:36

Objects

The Sun

Equipment

Bresser 90mm f/10 achromat
DIY spectroheliograph/QHY5III 178M
CEM60

Location

Reading Berkshire UK

Target name

The Sun

Title

Hydrogen Beta spectroheliogram 7th May 2023

About this image

Self build Spectroheliograph based around a 135mm SLR lens as collimator to a 9 micron Quartz slit (12mm in length) and 150mm SLR lens as imaging lens with QHY5III 178M,grating is a 25x25mm 2400l/mm Holographic. 16x sidereal speed used to force the scans and 900mm focal length will not allow full disk so had to scan top and bottom hemispheres and stitch together as a two pane mosaic using Photoshop CS2. These are single scans so no stacking,wavelet sharpened in Astrosurface.

Files associated with this observation

15_45_28Z_shift=0_clahe_stitch2.jpg (384.2 kB)

Like this image

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