Hi All,
Completed NGC 2539 yesterday with a clear night on Friday.
I added Ha data to duoband data. I'm pleased the way the star colours came out. Despite the number of stars the Nebula still came through.
I wonder if the ZWO Duoband having a wider bandwidth allows a greater colour range than more restrictive bandwidth making it more suitable for a colour camera? However it is interesting to see how much more efficient the 3.5nm Ha filter is than the duoband (filling the sensor wells with only the desired bandwidth). Would I get the same effect with just 3.5nm Ha and 3.5nm Oiii ?
14 x 600 seconds ZWO Duoband filter
8 x 600 Seconds Ha Antlia 3.5nm filter
Esprit 100
ASI 183 MC Pro
HEQ6-R
ZWO OAG AS1120mm
The narrower the band the more it only allows that colour in as my understanding goes. I should see if I can push it out to 600 sec subs, I think we're near each other as it doesn't look like a lot of light pollution.
You did well with that faint object and a 183mc . I would be happy with that.
In narrowband mono with Ha Oiii Sii or other filters you can assign the filter bands to any colour you choose to suit your purpose of illustrating the structure or even age of parts of an object if you are a scientist.
With a colour camera you are using the filtering process for a different purpose but could still assign the subs to any colour you choose. Usually to amplify the detail of the Nebulosity in different frequency bands by screening everything else in most of the subs. You could still assign your Oiii and Ha to Hoo for example and get a similar result but it is not narrowband where it also mixes RGB. I have combined Ha and Oiii with the Unfiltered 183mc image and it does give more detail and it is very interesting.
