Observation by Alun Halsey: Spectroheliograms in Halpha & Hbeta ...

Uploaded by

Alun Halsey

Observer

Alun Halsey

Observed

2023 Mar 30 - 11:58

Uploaded

2023 Apr 01 - 08:10

Objects

The Sun

Equipment

SW Evostar 72ED with full aperture Hoya ND16 filter
Sol'Ex SHG with 9um quartz slit/QHY5III 178M
CEM60

Location

Reading Berkshire UK

Target name

The Sun

Title

Spectroheliograms in Halpha & Hbeta 30th March 2023

About this image

Two spectroheliograms taken in the Halpha and Hbeta wavelengths created using a Sol'Ex SHG with 9um slit,16 bit SER files recorded in Sharpcap. Both are single scans with minimal processing (sharpening,brightness/gamma levels and noise reduction) in Photoshop CS2. 16x sidereal slew speed used on CEM60 to force the scan,aperture of 72ED reduced to 40mm for the Hbeta.

Files associated with this observation

Halpha_Hbeta-SHG-30th-March-2023.jpg (227.7 kB)

Like this image

Callum Potter, Gerard Cauchi, Mike Harlow, Peter Tickner, Robin Leadbeater

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