Quote:
Originally Posted by netwolf
how do you do narrowband with a OSC camera?
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Hi,
It’s simple, just use ha Sii or oiii filters and capture the target in long exposure, like for example I did 5 minutes of ha, 10 minutes of oiii and 20 minutes of sii,
After that using photoshop or pix insight, you extract the Color channel. for ha and sii it is red channel. Oiii I combine green and blue channel.
Covert them to grayscale and colour map your target , I use Hubble palette style for the lagoon.
This may sound like a lot of work, but there is many tutorials and techniques on YouTube to follow
One more note* since it’s a -30 below ambient cooling camera, noise is not so bad for long exposures, you will still get noise from any cooled ccd but you can subtract from darks.
I hope this helps,
Regards,
Girit