First Lunar image with amateur spectroheliograph?

[Merlin66]

J Paladin has just successfully applied his small SHG to the imaging of the Moon in narrowband sodium wavelength.

The image required 1sec exposures per frame.

I think this may be the first amateur lunar image recorded using the SHG!

A fantastic effort which shows the potential (with larger telescopes) of the SHG scanning techniques on brighter astronomical objects.

Congratulations, Well done!

Onwards and Upwards

[Merlin66]

(EDIT) The guys on the Astronomical Spectroscopy forum have corrected me! There have been various successful spectrographic scans of planets and nebula over the past few years....

http://astrosurf.com/joseribeiro

http://www.astrosurf.com/buil/scan/demo.htm

[michael.h.f.wilkinson]

Interesting stuff. The first link you give used a KAF sensor with its slow readout. I wonder if a cooled ASI174 might not be a lot better for this purpose.

[Merlin66]

Michael,

For the spectral scanning of non-solar objects, the key to success is obtaining a usable SNR.

The instrument requirements therefore, are much different from the SHG. Wider slit gaps, and shorter spectrograph focal lengths can be used giving a wider bandwidth.

The SHG needs a fast frame camera capable of producing an AVI file.