Elephant's Trunk Nebula (HOO), 2018

Date / Location

24th December 2018 & 8th January 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

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 composites and sensitivity

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

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

Total Integration Time

3hrs 32mins

Calibration Frames

25 Darks, 20/20 Flats for Ha/OIII

Software

PixInsight 1.8 Core

Photoshop

SharpCap