Most CMH lamps have the following halide (Apart from mercury): Sodium, Thallium, Dysprosium, Holmium and thullium.
In the spectrum of the CMH, the wide green line right to the mercury green line is of thallium, and like the sodium D line, the thallium green line also shows boardening and self absorbing.
Self absorbing of the green thallium line, and also the two blue and violet indium lines (Not included in CMH lamps) can be seen in the european Osram Powerstart HQI-TD and HQI-T compact MH lamps, and in overdosed green and blue MH lamps.

Strong Indium lines are found at 451nm and at 410nm. Most of the stock digital cameras don't pick up the violet area of the spectrum very well, (this includes the 405nm Hg line) so you need to buy a modified camera, modify it yourself, or use a film camera. Film records this area nicely. Black & white film also records the 365nm area (Hg complex)..in the ultraviolet!

In CMH lamps, there is no indium. The blue line that you see at 410nm, is probably of the rare-earths.
Digital cameras can see UVA light as well as IR light.
My camera can see blacklight fluorescent and UV LEDs much brighter than they are anyway.

Very interesting pic, thanks for sharing with us!

@dor123 Yes there's no indium in the spectra above. And, CMOS chips that are inside all digital cameras are sensitive to a wide portion of the spectrum from the violet to the far IR. The stock filter in front of the chip, that which is always found in most off-the-shelf digital cameras, restricts what can be recorded from 420nm to 635nm... For our purposes, this is a bit constrictive.

A correction for my former comment: The 410nm line is mercury, not rare-earths. the mercury have two blue lines: a blue one and a violet one which is less notable with the unaided eye.