California Nebula HaRGB 2019

California Nebula, HaRGB, 2019

NGC 1499

1,000 light years away, the rich of hydrogen nebula NGC 1499 burns like an eternal flame in the constellation of Perseus, an Ancient Greek demigod, founder of Mycenae.

Tech Card

Date / Location

26th & 27th February 2019, Bedworth, GMT+0, United Kingdom, Bortle Class 5 ~SGM: 19.57 mag./arc sec2

Equipment

Camera: ZWO ASI 1600MM-PRO USB 3.0 Mono (Type CMOS)

Sensor Cooling Temperature: -15C

Filters: 1.25 5nm Astrodon Ha, 1.25 Astrodon LRGB Gen2 E-Series Tru-Balance Red, 1.25 Astrodon LRGB Gen2 E-Series Tru-Balance Green, 1.25 Astrodon LRGB Gen2 E-Series Tru-Balance Blue

Imaging Telescope: Takahashi FS-60CB

Correcting Lens: Takahashi Reducer 0.72x (composite focal length at 264mm and focal ratio at f/4.9)

Mount: iOptron CEM25EC

Image Quality

12Bit ADC (FITS)

Exposure time per image / number of composities and sensitivity

25 x 180 Ha subs (Unity Gain, Gain: 139, Offset: 21, Binning 1x1)

13 x 180 Red subs (Unity Gain, Gain: 139, Offset: 21, Binning 1x1)

9 x 180 Green subs (Unity Gain, Gain: 139, Offset: 21, Binning 1x1)

9 x 180 Blue subs (Unity Gain, Gain: 139, Offset: 21, Binning 1x1)

Total Integration Time

2hrs 48mins

Calibration Frames

20 Darks, 20 Flats (Ha flat for Ha, and Luminance flat for RGB

Software

PixInsight 1.8 Core

Photoshop

SharpCap

DEEP SKY

Deep Sky photographs

STARSCAPE

Starscape photographs

SOLAR SYSTEM

Solar system photographs