DMK41 advice sought

[mattifor]

Advice needed

I am contemplating buying a DMK41 to use with my Lunt solar scope.

What is the advantage of mono version against the colour version please

[Ben Ritchie]

The advantage of the monochrome CCD is that you're imaging in monochromatic light - the Lunt will pass only the H-alpha wavelength.

[mattifor]

Sorry Ben,

Does that mean that Mono is best to capture from the Lunt.

I am new to imaging so need all the help I can get

Ivor

[Merlin66]

Yes is the answer!

I think what Ben was trying to say is that there is no colour to record...the light is only at one wavelength Ha - there is nothing else.

I use the DMK21 and DMK41 for my solar work...great cameras.

[Ben Ritchie]

I think what Ben was trying to say is that there is no colour to record

Yeah, sorry, I was a bit brief.

With a monochrome camera all pixels are sensitive to all incoming light, whereas with a colour camera there is a built-in matrix that splits pixels into red, green and blue. However, with H-alpha imaging there is *no* blue or green light, the etalon removes it - you're just getting the H-alpha line in the far red (6562.82 Angstroms, with a passband of under an Angstrom across it). So those blue and green pixels are wasted.

edit: if you're thinking "ah, but all those H-alpha and CaK images show the sun in lovely golds and blues", that's added afterwards in Photoshop when you're imaging in mono.

[mattifor]

Thanks very much both of you I now understand. Now looking for best price.

Ivor