The Witch's Broom - NGC6960

This is a bi-color image (Ha and OIII) of the Witch's Broom Nebula a.k.a. Western Veil Nebula.

 

I wanted this to be an HSO image, but my laptop ran out of battery after only two SII frames. So I decided to make this a bicolor.

 

Equipment details:

- Mount: Astro-Physics Mach1 GTO

- Imaging scope: Explore Scientific 102mm Apochromatic Refractor

- Imaging camera: ZWO ASI1600MM-Cool

- Guide camera: QHY5III178M

- OAG: ZWO OAG

- Other: HoTech SCA Field Flattner

- Filter wheel: ZWO EFW

- Focuser: MoonLite MiniV2 motorized focuser

- Filters: Astrodon 5nm Ha, 3nm OIII filters

 

Actuisition details:

- Camera set to -17C at Unity Gain

- Lights:

-- Ha: 25 x 240s Bin: 1x1

-- OIII: 27 x 240s Bin: 1x1

- Darks: 40 x 240s Bin: 1x1

- Biases: 100x Bin: 1x1

- Flats: 25x per filter

 

Software:

- Acquisition: Sequence Generator Pro

- Mount Control: ASCOM, Stellarium, Stellarium Scope

- Guiding: PHD2

- Drift Alignment: PHD2 Drift Align

- Processing: PixInsight

 

Channel mapping:

- R: Ha

- G: 70% OIII + 30% Ha

- B: OIII

 

Total integration time (approx): 3.5 hours

Done