DSLR + Colour Filter Wheel?? for DSO

[zakkhogan]

Just a random thought,

Obviously a DSLR images in full colour but would there be any benefit of using a LRGB filter set while imaging?

Ta

Craig

[Thalestris24]

Um, I don't think so!

Louise

[Spikey]

I can think of a few disadvantages !  LRGB filters are usually placed in front of a monochrome chipped device.

[ollypenrice]

If you really like being under the stars and working on the same image they would have the advantage of making your capturing pleasures last about twice as long!

The L filter would let the camera function more or less normally. The red would blind the camera's green and blue pixels and the blue filter would blind its green and red ones.

A DSLR already has colour filters in front of each pixel, usually RGGB. The pair of G filters, in daytime, fulfill the luminance (all colours at once) function quite well because of the way reflected light and the human eye behave. In terms of emission objects from space a true luminance filter including blue and red is more efficient. We may see some LRGB chips appearing soon instead of the Bayer RGGB. This ought to be a good thing, in principle, for astrophotgraphers.

Olly

[ecuador]

If you have a lot of light pollution, a filter wheel with narrow band filters (Ha, OIII, SII etc) might make some sense for some targets. But not an LRGB wheel.

[zakkhogan]

Nice one guys,  wont being trying that one in a hurry then

Thanks all for the input.

Craig 

[Zakalwe]

If you have a lot of light pollution, a filter wheel with narrow band filters (Ha, OIII, SII etc) might make some sense for some targets. But not an LRGB wheel.

No point in trying Ha unless the camera has been modded. As standard DSLR are very insensitive to Ha.

[ecuador]

No point in trying Ha unless the camera has been modded. As standard DSLR are very insensitive to Ha.

Well, yeah, they are even less sensitive to S-II, Ha/SII narrowband is only for modded dslrs.

[laser_jock99]

We may see some LRGB chips appearing soon instead of the Bayer RGGB. This ought to be a good thing, in principle, for astrophotgraphers.

Olly

Fuji have been making CCD's with a separate luminance pixel for years......

http://en.wikipedia.org/wiki/Super_CCD

I like them for astro work.

What would be nice would be a built in array of narrowband filters!