I just can't resist an obscure globular so had a go at Terzan 9 again (which I imaged before with the ToUCam) but I didn't realise until now just how beautiful a field it lies in! There are some nice streaks of dark dust across the area, and I found 2 planetary nebulae in the image too which was a nice bonus.
I didn't process the data until now because it was actually taken under moonlight on 29th May so I thought it might not yield much but I was certainly mistaken. I'm surprised how much the camera picks up even with the Moon nearby
I'm still experimenting with the spacing for the coma corrector, so stars in the corners are not perfect but fairly close.
Link to large version (70% scale, 2MB) is here: http://www.pbase.com/rolfolsen/image/144014839/original
Date: 29th May 2012
Exposure: LRGB: 80:25:25:25m, total 2hrs 35mins
Telescope: 10" Serrurier Truss Newtonian
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
About the image:
This image shows the heavily obscured globular cluster Terzan 9 in Sagittarius. It has been determined that Terzan 9 lies within the Milky Way's central bulge at a distance of 23,000 light years. Shining with a magnitude of 16 this cluster is a difficult target in most amateur telescopes, but it is relatively easy to photograph. The cluster is significantly reddened and heavily obscured by the massive interstellar dust clouds in the direction of the Milky Way centre. A solid dark dust lane nearly covers the cluster but still its faint combined glow of thousands of stars reach us from a place near the galactic centre.
Also visible in the upper right is the bright blue planetary nebula IC4653 at a distance of 10,500 light years. A little below IC4653 another tiny purple planetary nebula is seen; ESO 521-14 which at 27,000 light years lies much further away than even Terzan 9.
Hope you enjoy, comments and critique is welcome as always.