Lagoon Nebula - First Light DSI III

[CoolhandJo]

Hi, recently upgraded from DSI II pro to DSI III Pro. This is my first night out with it. Lagoon Nebula LRGB 40:30:30:30, 2min subs through SW ED80. Guided dsi through LX200 10". No flats, auto dark subtract.

Post processing in photoshop - curves, sharpening.

Higher res version here:

http://s594.photobucket.com/albums/tt21/coolhandjo/?action=view&current=lagoon-dsi-iii-max-18-7-09.jpg

Thanks for viewing

[peter_4059]

Nice first light with the DSI III Paul. I'll be interested to see what you think of it compared to the DSI II pro. The one shot colour sure sounds appealing.

Peter

[Hagar]

Nice image Paul. It does look a little black in the background (clipped). You might want to keep an eye on the histogram during processing but all in all a pretty pleasing image.

[spearo]

well done
will be interesting indeed to see comparison shots of DSI2 and 3.
This is a nice pic. Good tracking , focus might be just a tad soft just a bit. but with that many exposures of long duration it could have changed overtime too so might be worth checking focus after a few sots, say every 1/2 hour or so?
well done
cheers
frank

[telecasterguru]

Pretty good for an initial run with the new imager.

Frank

[Tamtarn]

Very nice first light Paul,as Doug has said above the background is a little dark, but the DSI 3 has captured some good data in this image.
Well done

[CoolhandJo]

Thanks to all for the replies.

The issues with the image are apparent as follows:

1. Not centred. Unfortunately I knocked the scope after the Lum and couldnt get it recentred. So its cropped.
2. 1/3 of the subs were a bit out (Perriodic Error). Should of tossed em out but ran out of time so left them in. This results in an out of focus look
3. The Lum is actually too stretched. I did it on laptop and didnt realise until I viewed on my calibrated screen
4. Used Carbonies PS tools. This image should have been processed by setting the corect tonal range first, colour balanced, etc etc. When I get time I will reprocess myself.
5. My Bartinov mask was hard to view on the blue channel so it was a bit hit and miss. Resulted in blue being slightly out of focus.

Having declared all that, the DSI III PRO performed perfectly, in that it has low noise, and the larger chip hides a lot of the above issues well. It also has demonstrated, to me, that it is capable of exhibiting very high detail if used correctly.

[CoolhandJo]

As per my last post, I tested to see if this was the case. I processed only the RGB (which had less pec issues and was centred). I also tried not to clip the background and not to overstretch.

Result attached.

[Matty P]

Great first light Paul. The reprocessed version is excellent. Nice detail and colours.

Looking forward to more. :)

[peter_4059]

The repro looks much better Paul.

Apologies that I mis-read your initial thread, for some reason I though it was the OSC version??

Peter

[Tilt]

Impressive first light with the DSI III, well done.

Michael