NGC 6520 & BARNARD 86 OPEN CLUSTER & DARK NEBULA

Sagittarius

 (ra: 18,03.4 / dec -27:54)

DATA

TYPE: Open Cluster & Dark Nebula

VISUAL MAGNITUDE: 8 for NGC 6520 N/A for Barnard 76

SIZE: 6 arc minutes

DISTANCE: 7,000 light years

OBJECT DESCRIPTION

IMAGE INFORMATION

SCOPE: Celestron SCT 8 Inches riding in a Vixen GPDX with Sky Sensor 2000 

SKY CONDITIONS: limit visual magnitude 4.5

CAMERA: Starlight Xpress SXVF H9

FILTERS: Astronomik Type 2. IDAS LPS II for Luminance - Atik filter wheel

EXPOSURES: LRGB (15,15,15,15)

IMAGE ACQUISITION: ASTRO ART V 3.0 CCD Control Interface Plug In V 3.72

Calibrated: Images Plus (no darks & no bias subtracted) 40 flats applied. PROCESSED: Photoshop CS