NGC5128 Centaurus A Galaxy

[EzyStyles (Eric)]

Took this a few days ago. Terrible weather down in Melbourne for the past week. Managed to grab a few shots when the clouds were cleared up just. Plenty of dew and a very very cold night. Was 10 x 2 minute with Meade DSI. Stacked in Registax processed in Photoshop CS2.

[RB (Andrew)]

Good one Ezy,
Nice colours and very nice image scale.

[Itchy]

Hi Ezy,

A nice shot with great colours. There appears to be a fair degree of vignetting, or at least a blue gradient. Do you have the opportunity to apply flats to your DSI raw images, or are they combined "on the fly"?

[EzyStyles (Eric)]

Thanks for your reply guys. Haven't had any opportunity to apply flat fields yet Tony. Need to bang myself a box first or is there an easier way to do flat fields?

[Itchy]

Originally Posted by EzyStyles

Thanks for your reply guys. Haven't had any opportunity to apply flat fields yet Tony. Need to bang myself a box first or is there an easier way to do flat fields?

I use a white shirt, draped/stretched over the scope with the same optical congifuration as I used with the lights.
This is done during the day (usually the next mornng) using natural light in the house. I set the camera in "P" mode using ISO100 and let it do its bit. I rotate the scope a little after each exposure and then average combine about 20 frames. This seems to work well, giving a histogram spike 1/3 to 1/2 way across the graph when viewed on the camera's LCD.

Cheers

[tornado33]

Thats a nice deep shot there showing the full extent of the dust lane.
Scott