Rosette nebula experiments : ASI224MC + Samyang 135mm (Ben)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: NGC 2239 · NGC 2244 · NGC 2252 · Rosette nebula · The star 12Mon

Rosette nebula experiments : ASI224MC + Samyang 135mm, Ben

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Rosette nebula experiments : ASI224MC + Samyang 135mm

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Rosette nebula experiments : ASI224MC + Samyang 135mm

First pic with ASI224MC + Samyang 135mm

- ASI224MC is really nice. The amp glow can be greatly reduced with darks.

- ASI224 image is only 1300 pixels large. Ha extracted from red channel is about 650 pixels large. I drizzled the 3 bands to get 1300 back. Mono camera needed :p

- guiding would be nice for this setup (work in progress)

- a few Sii only (clouds came)

I made 4 different band blending and I applied the same processing for each pic.

Original) stacked Ha

B) stacked Oiii

C) stacked Sii

D) SHO

R = Sii

G = Ha

B = Oiii

E) HOS

R = Ha

G = Oiii

B = Sii

F) HOO alternative

R = 0.76 * Ha + 0.24 * Sii

G = Oiii

B = 0.85 * Oiii + 0.15 * Ha

G) HOO "classic"

R = Ha

G = 0.65 * Oiii + 0.35 * Ha

B = 0.8 * Oiii + 0.3 * Ha

Final) Reprocessed without Sii (too weak) and a bit sharper :

R = Ha

G = 0.9 Ha + 0.1 Oiii

B = Oiii

I

Description: Reprocessed

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Samyang 135 f/2

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Rosette nebula experiments : ASI224MC + Samyang 135mm

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Rosette nebula experiments : ASI224MC + Samyang 135mm

Rosette nebula experiments : ASI224MC + Samyang 135mm

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