The Elephant Trunk Region in Cepheus

The Elephant Trunk region is a large emission nebula

composed of ionized gas.  The Elephant Trunk is the

pillar of dust and gas above the bright central star.

Erakis, at left, is known as the Garnet Star.

Hover over the picture for an annotated version

Date:  26, 31 July and 10 August 2024

FOV:  Approximately 4° 10' × 2° 47'

Telescope:  Askar FRA300 pro (300mm f/5 Petzval)

Guiding:  ZWO ASI120MM mini mono guide camera,

Stellarvue F050G 50mm guide scope

Computer:  ASIair pro Raspberry Pi

Mount:  ZWO AM5 harmonic drive

Camera:  ZWO ASI6200MC Pro Cooled (-10°C) Color CMOS with gain 100

Pixel size:  3.76 μm

Resolution:  2.594 arcsec/pixel

Frames:26July 202442 × 240 seconds × 100 gain,

31July 202451 × 240 seconds × 100 gain,

10 August 202415 × 240 seconds × 100 gain

Filter:  Optolong L-eNhance filter 26 and 31 July 2024,

Optolong UV-IR cut filter 10 August 2024

Stacking:  one hundred and eight 240 second frames using Pixinsight

Total Time:  7 hours 12 minutes

Processing:  Pixinsight – SPPC, DBE, SPCC, BlurXT, NoiseXT, DynCrop → Linear

MStr, GHS, HST, PMath MStr + GHS + HST → Stars, Sat,

StarXT, MStr, GHS, HST, PMath MStr + GHS + HST → Starless,

HDR6488PhLm, Sat, PMath ~(~Stars*~Starless) → Blend, scale

Location:  Darling Hill Observatory near Vesper, NY