Sharpless-173 HII region

Nebula and cluster

Constellation- Cassiopeia

Right Ascension: 22h 56m 31 s

Declination: +62° 35' 39"

Distance: ? light years

Visual Brightness: --- mag

Apparent Dimension: ~ 30 arc minutes

Image information-

Date taken- September 9, 2005

Telescope/Focal length/Camera/Temperature- Takahashi FS-78 @ f/8.1, ST-8XE NABG @ -15C, on a NexStar11 GPS autoguided with CCDSoft Ver. 5.0

Integrations- Ha = 12 x 900 seconds binned 1x1

Processing- Flats and darks, aligned and combined in CCDsoft Ver 5.0