NGC1499 California in narrowband

[jcmoreno]

HI,

I continue processing the winter photos, and finished the process of a California nebula taken from Barcelona city with narrowband filters.

The equipment: SkyWatcher 80ED + reductor WO 0.8x + HEQ5PRO
Camera: Atik 314L+

Exposures:
H-alpha: 58 x 300s
O-III: 23 x 300s bin 2x2
S-II: 20x300s bin 2x2

Color combination:
R: H-alpha
G: 0.3*OIII + 0.7*SII
B: OIII

In the next i will try other channel combination recommended by Lex  .



I'll apreciate a lot your comments. Thanks.

[Lex]

Hi Juan,

Hehe, your picture is really nice in terms of background/object differnciation! Well done on this.
Nevertheless the nebula internal differences could be boosted a little bit with wavelets 

Btw I earned the PM formulas from the forum, from Juan beeing precise 

Best

[jcmoreno]

Hi,

I generated a new version with ATW enhancement of nebula details. I must to master the star masking technique due to a non perfect masking of stars.

To protect stars I used a combination of StarMak and RangeSelection to select stars and non-nebula regions and sum with PixelMath. Is a lot of time of trial and error.



Regards,