IC5070 - The Pelican Nebula (Ha:OIII:OIII)

18:39 5/9/2008 UTC

I got a short window of opportunity to collect OIII data for the Pelican I started yesterday. I was in good pace exposing nice series of 600s exposures when a thick cloud cover cut the session short. OIII is incredibely dim and there really isn't that much data to change the appearance of the nebula. But still, there is some. By this method of combining the channels (OIII both green and blue), OIII active regions mostly are desaturated a bit compared to the bright ionisation front which is brightly red from H-alpha. My daughter calls this a Fish Head Nebula. In fact I've always had difficulties seeing a Pelican here, but fish head is quite obvious to me...

NGC/IC Object List:
IC5070 gaseous nebula RA:20h50m48.0 Dec:+44°11m'00" BMag: 8.0, LBN 350 Pelican Nebula

Camera: Modified Canon EOS 350D | Telescope: Skywatcher ED80 Pro 80mm f7.5 refractor, William Optics 0.8x focal reducer | Mount: Vixen GP-D2, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: Astronomik H-alpha 13nm 2", Astronomik OIII 13nm 2", Astronomik EOS L UV/IR Insert Filter | Guiding: The Imaging Source DMK 21AU04.AS CCD camera, Orion ShortTube 80mm f5 refractor, Stark-Labs PHD Guiding | Exposure: Ha: 9x600s (1h30m) ISO800 f6, 17 darks, 10 flats, 0 bias; OIII: 8x600s (1h20m) ISO800 f6, 17 darks, 10 flats, 0 bias | Software: Stark-Labs Nebulosity 2 | Location: 60°31'N 26°52'E (Koivula/Kotka,FI) | Image Field: 2.234 x 1.696 degrees | Image Center: Ra 20h50m34s Dec +44°11'50" |