Spiders Web

Atmos (Colin) · #1 07-12-2018, 03:07 PM

A few days ago while going through one of my backup drives I found some data that I'd calibrated and briefly looked at but never processed so I figured I'd have a bit of a play.

I've been doing some non-scientific testing between PixInsight and AstroPixelProcessor and Bayer Drizzle. Between the two of them, APP is growing on me because it can be more click and forget for a while. I'm not a fan of PI BPP as it doesn't allow a lot of tweaking so I find myself doing everything manually. I will continue to do all of my calibration but I am thinking I may do my stacking in APP and then subsequent processing in PI again.

First off I have some data taken over two nights 3 months ago with my unmodded Nikon D810 and Sky Rover 130mm.
Processing has been nothing other than colour calibration, MaskedStretch and then a slight histogram stretch to brighten the field and then some arbitrary saturation.

NGC 2070 RGB

This afternoon I remembered that I had some OIII and Ha data on my laptop from this region and thought I'd have a play in combining the two together. Attempted combining the Ha and OIII into the RGB while in linear and wasn't happy with the complete abolishing of the fainter stars with nebulosity.

Decided to do something that Placidus suggested a while ago and that was to combine after stretching. This is what I ended up with, processing was the same as with the RGB, just colour calibrating, stretching and saturation.

NGC 2070 HaRGBOIII

I'm reasonably happy with how the narrowband and RGB have combined together.

multiweb (Marc) · #2 07-12-2018, 04:39 PM

Very cool Colin. Love #2! Great colors

Atmos (Colin) · #3 07-12-2018, 06:24 PM

Quote:

Originally Posted by multiweb

Very cool Colin. Love #2! Great colors

Thanks Marc, I’m tempted to get it printed as a 24x24”

gregbradley · #4 07-12-2018, 07:33 PM

Yes, love the colours of #2. Its hard to get those colours with filtered imaging.

Greg.

Atmos (Colin) · #5 08-12-2018, 01:27 AM

Quote:

Originally Posted by gregbradley

Yes, love the colours of #2. Its hard to get those colours with filtered imaging.

Greg.

Thanks Greg, I’ve given up on trying to get even half reasonable Ha with my unmodded DSLR. It’s a great camera but lacks the Ha sensitivity.

Placidus (Mike and Trish) · #6 08-12-2018, 02:26 PM

Lovely! So much to see.

Atmos (Colin) · #7 08-12-2018, 10:45 PM

Quote:

Originally Posted by Placidus

Lovely! So much to see.

Thanks MnT, doesn't quite have the detail or contrast of your 20"

RickS (Rick) · #8 13-12-2018, 09:41 AM

#2 is excellent, Colin! I have just over an hour of Ha and an hour of Oiii from the FSQ-85ED with reducer and all attempts to add any further NB or RGB data have been frustrated by cloud. I might have to bite the bullet and just do the best I can with what I have...

Benjamin (Ben) · #9 13-12-2018, 12:07 PM

HaRGBOIII sounds a bit like a long forgotten Star Wars droid... pic 2 is fabulous

Atmos (Colin) · #10 13-12-2018, 05:02 PM

Quote:

Originally Posted by RickS

#2 is excellent, Colin! I have just over an hour of Ha and an hour of Oiii from the FSQ-85ED with reducer and all attempts to add any further NB or RGB data have been frustrated by cloud. I might have to bite the bullet and just do the best I can with what I have...

Thanks Rick.
You get a nice wide field with that FSQ-85

Quote:

Originally Posted by Benjamin

HaRGBOIII sounds a bit like a long forgotten Star Wars droid... pic 2 is fabulous

Thanks Ben, just need to pop in a number or two

Benjamin (Ben) · #11 13-12-2018, 05:43 PM

Quote:

Originally Posted by Atmos

Thanks Ben, just need to pop in a number or two

Could try HaRGS2B03 :-)

ChrisV (Chris) · #12 13-12-2018, 06:52 PM

Very nice Colin. Love how the mix works.

Stevec35 (Steve) · #13 13-12-2018, 10:00 PM

The second one is my favourite too Colin. It's a very nice view of this nebula complex.

Steve

Atmos (Colin) · #14 14-12-2018, 07:49 AM

Quote:

Originally Posted by Benjamin

Could try HaRGS2B03 :-)

Have to drop the S2 out of this one I’m afraid but it could be H1RGBO3

Quote:

Originally Posted by ChrisV

Very nice Colin. Love how the mix works.

Thanks Chris, not sure how accurate the colour balance is, the stars are right but I’m not sure about the Ha and OIII.

Quote:

Originally Posted by Stevec35

The second one is my favourite too Colin. It's a very nice view of this nebula complex.

Steve

Thanks Steve. Have you ever shot SN1987A? It shows up in this field but it’s nothing more than a red fuzzy blob wedges between two stars.