Heart Nebula, SHO, 2019

IC 1805

The Heart Nebula in SHO. 3 hours and 29 minutes of Hydrogen-α, Oxygen III and Sulfur II using 5nm and 3nm Astrodon filters and a monochromatic CMOS camera sensor.

Tech Card

Date / Location

Middle of Februrary 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" 3nm Astrodon OIII, 1.25" 3nm Astrodon SII

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

70 x 120" Ha subs (Gain 200, Offset 50/16, Binning 2x2)

73 x 120" OIII subs (Gain 200, Offset 50, Binning 2x2)

66 x 120" SII subs (Gain 200, Offset 50, Binning 2x2)

Total Integration Time

3hrs 29mins

Calibration Frames

25 Darks, 20/20/30 Flats for Ha/OIII/SII

Software

PixInsight 1.8 Core

Photoshop

SharpCap