NGC2237 - The Rosette Nebula

[cjr]

Hi all,

I have gotten around to processing my data for the Rosette Nebula. I think its come up OK, I could probably stretch the data some more. This one has been done in Gimp but I am now trying to get my head around StarTools so I am keen to process this one again. I need to get onto doing Dark Frames and fixing up some satellite trials. Coma is quite bad, but I have since spaced it out so its better (not yet perfect).

It looks like i might have that red hue again as per recommendations in my other post. I am white balancing on a corner but it looks like i might need to pick a spot further in to get the RGB to line up correctly.

Equipment

Equipment list is as follows
Skywatcher EQ6R-Pro
Skywatcher 130P

Nikon D5600 (I've removed the stock IR Filter)
ZWO IR Cut Filter
Baader Coma Corrector
Guiding I'm using a Skywatcher 9x50 finder scope that i made up a sensor housing for with an IMX291 sensor

Acquisition

Capture details were as follows (Using BackyardNikon)

60 x Light Frames 360 seconds @ 200 ISO

I used a master BIAS & FLAT set when stacking. Flats could've been better by the looks of it.

Stacking

I have used DSS to stack the images

Processing

Post stacking I put the image into gimp, cropped & scaled it. Stretched the levels > white balanced the levels > did a star reduction by fuzzy selecting the stars and using the value propagate function > performed some curve adjustments > removed gradients > added a little bit of saturation > final white balance tweaks.

The same as my other post. Any comments/feedback would be much appreciated. Would love to improve where I can.

I thought I'd upload this one to AstroBin so i could include a higher resolution image. Link available here https://astrob.in/anj332/0/
Cheers,

Cody

[jahnpahwa]

Looks good to me, Cody. Nice one!!

[raymo]

Lovely job Cody, but for me it looks too monochrome. The Rosette being already predominantly red stands out much better when using an unmodded camera.
raymo

[PKay]

Great result Cody.

Way better than my first effort (not that long ago).

Well done!

[Nikolas]

For a first effort it looks great in terms of the detail withing the nebula, however there is a strong magenta cast as highlighted in the stars.

This can be toned down in processing.

[cjr]

Thanks guys great input, working on doing a revision now with these onboard. Cheers

[LostInSp_ce]

Very good first effort and some clean processing using GIMP. Well done. :thumbsup:

[Anth10]

The central core in the high res looks good with the dust lanes standing out and the star spikes centre’s attention to this region/ look forward to seeing what your reprocess brings out whilst taming the red a fraction.
Nice work.
Anth

[Craig_]

Great detail in this :)

[Zuts]

A lovely image. I haven't shot the Rosette yet but wish to. Where are you located, I am in Sydney and didn't think it was high enough at the moment for me to have a try?

[Robert_T]

likewise keen to give the rosette a go. Looks great here, lots of fine detail. How far above your horizon?

[cjr]

Thanks for the replies guys and sorry for the delay. I am located in southern country Victoria, my imaging is in a bortle 4 zone. I can get a few hours of data each night at the moment from about 1am to 4:30am. I won't touch it until its 30 degrees over the horizon. Ideally later in the year ill go at it when its 45 degrees and above. I'm working on getting my head around startools still at the moment. I am working on an orion dataset from when i started imaging. The data isn't the best but it seems to be a great one to attempt in startools I'm going to post up a first attempt of that shortly. Once i get my head around that i'm going to give the rosette another go.

[DavidTrap]

I think you can move yourself out of the Beginner Astrophotography section with that effort ;)

DT