Caldwell 004 Iris Nebula

Open star cluster and reflection nebula

 

Exposure Details

 

Lens Celestron Nexstar 6SE

Focal Length 1500mm

Focal Ratio f/10

Mount Alt Az fitted with wedge

Camera Nikon D5300 (unmodified)

Exposure ISO1600, 218x30sec, 24x45sec

(total exposure 127min)

Calibration 40 darks, 40 flats, 40 bias

Date 12th June 2021

Location Southampton, UK

Sky Bortle 5

Done