Eta Carina Neb

LightningNZ (Cam) · #1 20-04-2014, 06:53 PM

Here's what will hopefully be the last image from my AT65-EDQ using my trusty but old and annoying Canon 300D. The adapters for my Nikon D5100 still haven't arrived yet but I couldn't resist spending a night outside imaging through the shocking light pollution of Belconnen.

Mixture of 20 second (ISO 400) and 30 second (ISO 200) subs for a total of 30 minutes exposure (this was an attempt to control streaking from poor polar alignment).

Not the greatest framing and a beast to get colour balanced. Hope you like it all the same.

Cheers,
Cam

carlstronomy (Carl) · #2 21-04-2014, 05:14 PM

Cam that's a nice image with some great detail. If you can balance some of that red out it would really pop.

Carl

LightningNZ (Cam) · #3 21-04-2014, 09:51 PM

I don't know whether I can. The background is balanced in RGB - the background is a perfect grey. I'm pretty sure the light pollution has nerfed this in an unrecoverable way.

I've given a repro a go. If you could give me any pointers it'd be much appreciated.

ZeroID (Brent) · #4 22-04-2014, 08:10 AM

Second image is def better IMHO. More depth in the detail and more subtle definition.

jsmoraes (Jorge) · #5 22-04-2014, 10:25 AM

the image is wide field. With Canon. And Canon 300D. it is very nice, at least to me. I prefer the first. I use Canon and I feel it boost the red color. I see photos of Eta Nebula with many different color: some full red, others full blue. With color camera is very difficult to equalize the color channels.

LightningNZ (Cam) · #6 22-04-2014, 10:31 AM

Thanks for the feedback guys. It's a modified camera too, so that really boosts the red channel, though I'm imaging through some shocking light pollution here and I think that's the real reason the colours just look a bit poked.

Cheers,
Cam

jsmoraes (Jorge) · #7 22-04-2014, 09:23 PM

Quote:

some shocking light pollution here

I have this problem here and the solution to minimize it was to use skyglow filter.

Quote:

It's a modified camera too

Perhaps you can use a new WhiteBalance file with the camera. With this modified camera to shot terrestrial is necessary this new whitebalance. Why not try this resource with the sky ?

LightningNZ (Cam) · #8 23-04-2014, 10:00 AM

Thanks Jorge, good thinking on the custom white balance.