Eastern Veil Nebula Canon 450D unmodded.

[Ouroboros]

Another one of my attempts at a difficult and unsuitable targets for an unmodded Canon 450D DSLR.   

I’m quite pleased with the green/blue portion of the nebula. The red is a little under represented as you’d expect. I had a go at reducing the stars but it didn’t look right. Anyway, they’re there and are what the camera “sees” so I’m happy to leave them be. 

13 Sep 2020. 40 x Lights (300s, 800ISO) plus Flats and Bias. No darks. Guided.   Evostar 80ED.  Processed in PixInsight. 

[Seelive]

43 minutes ago, Ouroboros said:

... I had a go at reducing the stars but it didn’t look right. Anyway, they’re there and are what the camera “sees” so I’m happy to leave them be ...

 

It's a very star rich area and removing the stars does somewhat retract from the visual beauty of that area of the sky.

[Ouroboros]

25 minutes ago, Seelive said:

It's a very star rich area and removing the stars does somewhat retract from the visual beauty of that area of the sky.

I agree. I also tried deconvolution but that didn’t contribute anything to the image either. But at least I learned what deconvolution is and how to do it. 

Actually it was quite an interesting image to process because the nebulous area is fairly dim and very unlike processing a bright galaxy.  I had fun fine tuning range masks.  

[Budgie1]

I wanted to try this one but didn't think it was worth it with an un-modded DSLR. I wish I had now.

As a comparison, I finally had a go this month as first light with a modded EOS 1300D on a ED100 with 0.85 reducer/flattener fitted. It's interesting the see how much more blue you have compared to mine, maybe I need more data.

This is 25x 300s at IOS800 using flats & bias but no darks, processed in PI.

[Ouroboros]

1 hour ago, Budgie1 said:

I wanted to try this one but didn't think it was worth it with an un-modded DSLR. I wish I had now.

As a comparison, I finally had a go this month as first light with a modded EOS 1300D on a ED100 with 0.85 reducer/flattener fitted. It's interesting the see how much more blue you have compared to mine, maybe I need more data.

This is 25x 300s at IOS800 using flats & bias but no darks, processed in PI.

Interesting! That’s a nice image though. My red was stronger before I applied photometric colour calibration. But that improved the overall colour balance, albeit with a brighter blue and less red. How did you do your colour calibration?

On this subject I have never had a problem with photometric calibration before. On this occasion though neither the Cambridge (U.K.) nor French server would accept my image.  However a server in Canada (Toronto?) worked fine and applied the correction. I checked the parameters used and RA and Dec of the image but the more local servers kept finding an error. I can’t now recall what the error was. 

Edited November 27, 2020 by Ouroboros

[Budgie1]

35 minutes ago, Ouroboros said:

Interesting! That’s a nice image though. My red was stronger before I applied photometric colour calibration. But that improved the overall colour balance, albeit with a brighter blue and less red. How did you do your colour calibration?

On this subject I have never had a problem with photometric calibration before. On this occasion though neither the Cambridge (U.K.) nor French server would accept my image.  However a server in Canada (Toronto?) worked fine and applied the correction. I checked the parameters used and RA and Dec of the image but the more local servers kept finding an error. I can’t now recall what the error was. 

I'm still on the learning curve with PI, as I only bought it a few weeks ago, so I'm trailing different techniques. I normally use Photometric Colour Calibration with the CDS server in France but for this image I followed the colour calibration in the video below and it seems to work quite well.

 

[Ouroboros]

@Budgie1 oh yes, dear old Mitch. I like his videos. I’m still learning PI even though I’ve used it for sometime. It’s always a bit of an adventure every time I process an image.