Hi all,
My first attempt at using narrowband filters for a colour image. IC 1318, the nebulae around Deneb.
60 min H-alpha, 60 min SII, 18 min OIII, processed with Ha as red S as green and O as blue. 300mm f/3.8 Tamron zoom lens at 300mm. SBIG ST8XE.
A couple of problems with it. The zoom was slightly different for the Ha. I forgot to check it after changing the filter. (SBIG CCDs will not focus if you try to use a filter wheel with a standard camera lens.) As a result, the Ha images do not quite match. The other problem is that I used a Lumicon OIII filter and it appears to have an IR leak. As a result, the stars are bloated with that filter. I will need to piggyback an IR blocking filter with that one.
Cheers,
Maurice
My first attempt at using narrowband filters for a colour image. IC 1318, the nebulae around Deneb.
60 min H-alpha, 60 min SII, 18 min OIII, processed with Ha as red S as green and O as blue. 300mm f/3.8 Tamron zoom lens at 300mm. SBIG ST8XE.
A couple of problems with it. The zoom was slightly different for the Ha. I forgot to check it after changing the filter. (SBIG CCDs will not focus if you try to use a filter wheel with a standard camera lens.) As a result, the Ha images do not quite match. The other problem is that I used a Lumicon OIII filter and it appears to have an IR leak. As a result, the stars are bloated with that filter. I will need to piggyback an IR blocking filter with that one.
Cheers,
Maurice
Attached Image:
* Teach a man to fish and you feed him for a day.
* Teach a man to use the internet and he won't bother you for weeks.
