Helix with Baader narrowband o3 filter

[tornado33]

Did this tonight, lots of moonlight about.
Only did 2x10 mins, was curious to see what it would look like using the o3 filter. Would look better with more exposures. This is where monochrome Astro CCD cameras come in handy as they get all the pixels, wheeras I was only getting green and a little bit of blue.
Scott

EDIT oops might help if I post the image
here it is
Scott

[Astroman]

look better if we could see the image lol.

[citivolus]

I agree with the OP, it would look substantially better with more exposures :)

I am eager to see this one, as I have one of these on order.

[Alchemy]

its a little dark i feel. color balance however i cant fault,no noise present, interesting composition though .did you dark subtract this, one should also consider flats and a bias to improve this particular image:rofl:

good to see :hi:

having a chuckle at your expense:D

[h0ughy]

Hey Scott - Umm, I thing the moon glow was a bit too much for you............

[seeker372011]

are you fellows seriously suggesting you cant see it?

[Astroman]

if I squint whilst standing on my head I think I can make it out. :)

Man the suspense is killing me..... cant wait to see it now..

[mill]

What they all are saying is --------------------->>>>> a picture or link would be nice.

[mill]

When sleepy it is not a good idea to post a picture it could turn out blank:whistle:

[tornado33]

image posted now

[Ric]

Nice image Scott, is it the OIII filter that gives it the ghostly appearance.

Cheers

[citivolus]

I agree that with a colour camera and an emission filter that you are only getting light on 1/3 of the pixels. I wonder if it would make a difference in processing at all to convert it as b&w and then drop the red and blue channels?

Edit: RGB cameras are what, rggb these days? In that case, it would be half the pixels.

[tornado33]

Actually thats how I process monochrome pics with narrowband filters. With red HA filters I delete the green and blue channels (and the noise that accompanies them) as theres no signal to speak of. With the O3 shot, however there is about 1/2 the signal in blue as is green, so I reduce the blue by 50%, green 100%, red is completely deleted.

technically the colour digicams are indeed rggb
http://en.wikipedia.org/wiki/Bayer_filter

more green then red or blue pixels

This sensor type sounds like a good design, but sadly doesnt yet seem to outpace current DSLR sensors
http://en.wikipedia.org/wiki/Foveon_X3_sensor

[jase]

Good effort for 20 mins worth of narrowband data. Perhaps triple the exposure next time to see a better result.