Observation by Alun Halsey: First light with Sol'Ex SHG

Uploaded by

Alun Halsey

Observer

Alun Halsey

Observed

2022 Nov 03 - 14:18

Uploaded

2022 Nov 04 - 20:11

Objects

The Sun

Equipment

Sol'Ex spectroheliograph
QHY5III 178M
Evostar 72ED apo with full aperture Hoya Pro ND16 filter
CEM60

Location

Reading Berkshire UK

Target name

The Sun

Title

First light with Sol'Ex SHG

About this image

Clouds cleared mid afternoon giving me just enough time to allow me to run a few test scans in the Hydrogen alpha wavelength after having spent the best part of Wednesday evening (2nd) putting the instrument together (3D printing carried out by Azure3DPrint in France). Optical set supplied by Shelyak consisting of 10um slit with 80mm focal length collimator,25x25mm 2400l/mm grating and a 125mm focal length doublet for the science camera,a QHY5III 178M. Slew speed of 16x was used to force the scan and image reconstructed in MAIN_SER Ver 3.6.2 and Astrosurface/Photoshop CS2 used for minimal processing.

Files associated with this observation

2022-11-03-1418_3-U-L-Sun_QHY5III178M_shift=0_clahe_proc.jpg (174.7 kB)

Like this image

Tim Haymes, Mike Harlow, David Basey, Manolo_Rodriguez, Sally Russell, Martin Lewis, Mattia Piccoli, Martina McGovern, Robin Leadbeater, Chris Hooker

Comments

Mike Harlow, 2022 Nov 05 - 09:37 UTC

Nice result Alun,

A couple of links to the Sol'Ex system that might be of interest to members:

Sol'Ex: presentation (astrosurf.com)

Shelyak system.

Mike.

Alun Halsey

Alun Halsey, 2022 Nov 06 - 22:37 UTC

Thank you Mike.

Chris Hooker, 2022 Nov 19 - 14:32 UTC

Very nice result, Alun.

What bandwidth does your setup give you? I would guess from the strong contrast that it's significantly narrower than the H-alpha filter instruments such as the PST.

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