M97 Owl Nebula in RGB + Duo Narrowband and manual dithering
Posted: Sat May 30, 2020 5:06 pm
Got an Optolong L-eNhance filter yesterday, so of course had to try it. Decided on M97 since I had that already in RGB from 2 weeks ago.
Had to use AutoStakkert for stacking of the Narrowband cause there was too little data for DeepSkyStacker to work with.
Looked for the methods for RGB + Narrowband but those didn't work: most of them are based on mono camera's. So I used the Narrowband as layer on the RGB in PS and blended them as good as possible.
The end result is way more defined in comparison to the RGB alone. Don't know if the colors are correct but this looked logical for me
Also tried manual dithering for the first time: after each 5 captures I slewed the mount a tiny bit. Seems to work.
Ioptron CEM25EC mount, no guiding
Meade LX65 8” f/10 ACF OTA
Optec Lepus Standard 0.62x reducer
Baader Neodymium filter (RGB)
Optolong L-eNhance filter (Narrowband)
Zwo ASI385MC camera
Capture in SharpCap:
RGB: 68 x 90 sec / Gain 190 (of 600)
Narrowband: 63 x 90 sec / Gain 220 / manual dithering every 5 captures
Stacking:
RGB: DeepSkyStacker
Narrowband: AutoStakkert
Photoshop: Curves and Levels, RGB + Narrowband blend, color saturation, noise reduction.
Had to use AutoStakkert for stacking of the Narrowband cause there was too little data for DeepSkyStacker to work with.
Looked for the methods for RGB + Narrowband but those didn't work: most of them are based on mono camera's. So I used the Narrowband as layer on the RGB in PS and blended them as good as possible.
The end result is way more defined in comparison to the RGB alone. Don't know if the colors are correct but this looked logical for me
Also tried manual dithering for the first time: after each 5 captures I slewed the mount a tiny bit. Seems to work.
Ioptron CEM25EC mount, no guiding
Meade LX65 8” f/10 ACF OTA
Optec Lepus Standard 0.62x reducer
Baader Neodymium filter (RGB)
Optolong L-eNhance filter (Narrowband)
Zwo ASI385MC camera
Capture in SharpCap:
RGB: 68 x 90 sec / Gain 190 (of 600)
Narrowband: 63 x 90 sec / Gain 220 / manual dithering every 5 captures
Stacking:
RGB: DeepSkyStacker
Narrowband: AutoStakkert
Photoshop: Curves and Levels, RGB + Narrowband blend, color saturation, noise reduction.