Yellow stars and Purplish Gradiant -help

[StevieO]

Hi all, Haven't been on for a long time, a long cloudy summer here in Somerset with few, or no, opportunities to get out, I've been finding other ways to amuse myself. However, the best way to rekindle an interest is to spend shed loads of money on it, so I did that and have found me mojo again.

So last night I got the chance to give my new Quattro 10" its first light on M1. The nebula has come out nicely in Hubble pallette, but the stars are yellow and there's a purplish background gradiant. I've been wrestling with it for ages but don't seem to be making much progress. . There's 90 min of Ha, and 78 min each of OIII and SII with darks flats and bias. Any tips for improving the background would be very welcome.

 

[michaelmorris]

On the subject of the background, do you have Photoshop?  If you do, I would recommend that you get a copy of the excellent GradientXterminator  plug-in.  

http://www.rc-astro.com/resources/GradientXTerminator/

That will sort out the background in just a few clicks.

[StevieO]

Thanks for the advice, I've followed the link on and bought GradiantXTerminator, which I've been meaning to do for a while, but this has given me the push I needed.

I downloaded and unzipped the file, which according to instructions I should place in the 'filters' sub-folder in the Plug-ins folder in Photoshop. However I have recently 'upgraded' to Photoshop 2017 and there's no 'filters' subfolder in Plug-ins, just something called Generator. I can't find a folder for filters anywhere, tried putting GXT in Plug-ins, but it doesn't work.

I wonder if anyone else has had this problem and what the solution is?

 

StevieO