NGC 6946 Firework Galaxy

[Star101]

SGPro, ZWO ASI183mm Pro, Mesu 200

PHD2, ZWO OAG and Lodestar x2 for guiding.

40 x 120s Lum

20 x 120s RG&B 

Processed in Pixinsight

Thanks for looking

 

 

[Star101]

Getting the correct title may help ?

Fixed

 

 

[Star101]

NGC 6946 Reprocessed. It's amazing what a good night's sleep can do

I used photometric colour calibration and avoided too much processing elsewhere.

The file was too large so reduced it. Full image here .

Thanks for looking.

 

[sloz1664]

Hi David,

Nicely processed image on what can be a difficult target, as is M101. I don't know if you used Ha in this image, if not, adding Ha would bring out the red spirals. I see you are using Pixinsight, try using the MorphologicalTransformation process to shrink the stars. This will show the galaxy in a better light. BTW M101 is my nemesis.

Steve 

[Star101]

Hi Steve, 

The image does not have any Ha.

I only took 3 x 300s Ha and then had some problem with amp glow while processing them. Maybe wrong Darks used! so decided not to use. I will get some more Ha data and try that. Thanks.

A couple of weeks ago, Astroimmaging channel had Adam Block showing a new method of star reduction. I may go try both his method and MorphologicalTransformation. 

[Star101]

Used MorphologicalTransformation to remove a lot of the stars.

I used a star mask to reduce the stars only half way then created a new star mask to finish with this image.

I need to go over Adam Block's new method ....could be a while  Hence MorphologicalTransformation will have to do for now ? 

 

[sloz1664]

That looks a lot better. You can see the galaxy, instead of looking through a myriad of stars

Steve

[des anderson]

It`s surprising what a lot of difference can do when you play around with some processing, and I`ll agree with Steve the last image is so much better with smaller stars. From good to GREAT. Des

[Star101]

I managed to add 7 x 600s Ha 

 

 

[Star101]

duplicate delete