Nebula

Messier 20, Trifid Nebula – First Attempt

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M20, Trifid Nebula - distance 5,200 light years
M20, Trifid Nebula – distance 5,200 light years

Frames : 8 x L x 3min , 4 x R x 5min, 4 x G x 5min, 1 x B x 5 min (duplicated x3), 8 x Ha x 10min)

M20

Crescent Nebula

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NGC 6888, Crescent Nebula – distance 5,000 light years
NGC 6888, Crescent Nebula – distance 5,000 light years

Frames : 7 x Ha x 12 min, 8 x OIII x 15 min

Palette mix : R = 0.9*Ha+0.1*OIII, G =0.1*Ha+0.9*OIII, B = OIII)

Crescent nebula

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NGC 6888, Crescent Nebula - distance 5,000 light years
NGC 6888, Crescent Nebula – distance 5,000 light years

Frames : 7 x Ha x 12 min, 1 (duplicated 4 times) x OIII x 15 min

Used formula iif(OIII > 0.5, 1-(1-HA)*(1-(OIII -0.5)), HA*(OIII +0.5))  to make synthetic green (from http://lightvortexastronomy.blogspot.com/2013/03/tutorial-nebulae-pixinsight-guide-for.html)

Palette mix : R = Ha, G = synthetic Green, B = OIII)

Messier 57 – Ring Nebula

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M57 - distance 2,300 light years
M57 – distance 2,300 light years

LRGB 8 x L, R, G, B x 2 min

M57 - narrowband
M57 – narrowband

Frames: 20 x 1 m Ha, SII, OIII

Mix R= 0.50*Ha+0.50*SII   – G = 15*Ha+85*OIII – B=OIII

M57

Messier 16, Eagle Nebula in narrowband

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M16
M16

 

Frames :

SII : 5 x 25m  2 x 20m

Ha:  7 x 10m ,  4 x 25 m

OIII: 9 x 25m, 3 x 20m

Mix = R= S, G=0.50 H + 0.50S , B =O

 

Messier 16, Eagle Nebula in narrowband

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M16
M16

Frames : 12 x Ha x 15 min , 8 x SII x 20 min, 8 x OIII x 20 min (3 consecutive days of imaging)

Palette  (R = 50%Ha + 50% SII,  G = 15%Ha + 85%OIII, B = OIII)

Pillars of Creation
Pillars of Creation

Messier 17 Omega Nebula

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M17 Omega Nebula – distance 6,000 light years (Hubble palette)
M17 Omega Nebula – distance 6,000 light years
(Hubble palette)

Frames 4 x Ha x 10 m, 4 x OIII x 12 m (2×2 bin), 4 x SII x 15 min (2x2bin)

 

M17 in natural color
M17 in natural color

Screen Shot 2014-06-22 at 11.02.57 PM

M16 in Hubble Pallete

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Pillars of creation
Pillars of creation
M16 in Hubble pallete
M16 in Hubble palette (80*SIII+20*H, H, O)

Messier 16, Eagle Nebula

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M16 Eagle Nebula - distance 7,000 light years
M16 Eagle Nebula – distance 7,000 light years

Frames 4x Ha x 10 min, 3 x S II x 15 min, 3x OIII x 15 min

Rosette Nebula

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Rosette Nebula - distance 5,200 light years
Rosette Nebula – distance 5,200 light years

Taken 1/25/2014 – Frames: 3 x Ha x 20m, 3 x OIII x 10m, 3 x SII x 10m ( OIII ,SII not enough exposures/time for true color) – Hubble palette

Rosette