NGC5139 (Omega Centauri)

Conditions: aquired in Barraba, a small town in New South Wales, Australia; no moon, passing haze and clouds, the target was fairly low in the sky (alt=27 deg)

Setup: Borg 100ED F6.4, DF-2 focusser, CFW-8, L(IR reject)+R+G+B filters, ST10XE, Takahashi EM-10 mount (here's a picture of this setup)

Exposure time: 1x2 mosaic consisting of L: 7x200 sec and 4x10 sec (1x1 binning); R,G,B: 3x180 sec (2x2 binning)

Processing (Mira, MaximDL, Registar, Photoshop): dark subtracted, flat fielded, de-bloomed, registered, median/avr combined, DDP, color balanced, combined as LLRGB, repaired de-blooming artifacts using short exposure frames, cropped and reduced 50% for web format


Here's my main page where you can see more of the pictures I have taken so far.


Comments greatly appreciated! (mikael@leif.org)