Stefan12
26-01-2015, 05:27 PM
https://www.dropbox.com/s/ito0waokfnd7rmb/Vela%20edit%20PS%20final%20image.jp g?dl=0
See link)
This image took me 5 nights and is a stack of 43, 10 minute exposures through my Hydrogen Alpha and Oxygen III filters, which equate to 14 hours of imaging time.
Unfortunately on the first 2 nights I encountered a few annoying wisps of high cloud, but the sky soon cleared beautifully and the atmospheric seeing was very good.
This is by far the longest time I have spent imaging on one Deep-sky target. It was also a great test for my new Losmandy G-11 mount and 50mm Guider.
Note: I also collected H-beta subs, but I was unhappy with the colour produced when I added them to the RGB channels in photoshop. I settled with just using the same OIII subs in both the Green and Blue channels. I'm not sure if this is cheating, or correct way to do things, but I was pretty happy with the colour
constructive criticism always welcome. Feel free to download the image and have a play around with it :)
Cheers Stefan
Image details:
Telescope: William Optics 90mm Refractor w/0.8x WO field flattener/ reducer
Camera: QHY9 Mono
Camera sensor temperature: -20 degrees
Guide camera: QHY5 2.0 seconds. Maxim DL guiding
Camera filters Narrowband 1.25"
H Baader Hydrogen Alpha 43x10min (7hrs,10min)
B Baader Oxygen III 43x10mins (7hrs,10mins) Sub total 14hrs
See link)
This image took me 5 nights and is a stack of 43, 10 minute exposures through my Hydrogen Alpha and Oxygen III filters, which equate to 14 hours of imaging time.
Unfortunately on the first 2 nights I encountered a few annoying wisps of high cloud, but the sky soon cleared beautifully and the atmospheric seeing was very good.
This is by far the longest time I have spent imaging on one Deep-sky target. It was also a great test for my new Losmandy G-11 mount and 50mm Guider.
Note: I also collected H-beta subs, but I was unhappy with the colour produced when I added them to the RGB channels in photoshop. I settled with just using the same OIII subs in both the Green and Blue channels. I'm not sure if this is cheating, or correct way to do things, but I was pretty happy with the colour
constructive criticism always welcome. Feel free to download the image and have a play around with it :)
Cheers Stefan
Image details:
Telescope: William Optics 90mm Refractor w/0.8x WO field flattener/ reducer
Camera: QHY9 Mono
Camera sensor temperature: -20 degrees
Guide camera: QHY5 2.0 seconds. Maxim DL guiding
Camera filters Narrowband 1.25"
H Baader Hydrogen Alpha 43x10min (7hrs,10min)
B Baader Oxygen III 43x10mins (7hrs,10mins) Sub total 14hrs