The Crescent nebula

I collected another 100 subs last night, this time using the Sii/Oiii Altair filter. I've now reprocessed the Crescent to produce a SHO image. Processing largely as before but I used the Setiastro script to produce RGB stars from the two narrowband masters. I've now collected 6 hours 40 minutes just with the two filters.

I'm still on 2 minute exposure as a mount update has changed the guiding settings and I haven't yet found the new ones for Phd2! I'm hoping to sort that out this evening and also capture some actual RGB stars which will replace the synthetic ones.

Click on the image to get a closer view

The Crescent nebula SHO

Anne Startup