NGC5139 Omega Centauri Globular Cluster

 

Date: 27 December morning, 2003. Just before dawn.

Telescope: Borg 76ED (grade B), piggybacked on C8, on Gemini G-41 mount

Guiding: Unguided, PEC enabled (PEC trained by ST-4).

Camera: Genesis KAF1602E, with Astronomik Luminence filter behind a Televue 0.8x reducer

Location: Tai Mei Tuk, Hong Kong

Exposure: 10 x 5mins + 1 x 4mins + 1 x 2mins (The short exposures were trial exposures)

Software: Image acquisition by Astroart, calibration and auto-alignment by Astroart, sigma-combined by Sigma, L-R deconvolution and smooth background in AIP4WIN, and median filtering and final brightness adjustment by Astroart.