M97 Owl Nebula in RGB + Duo Narrowband and manual dithering

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Menno555
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Joined: Mon Apr 20, 2020 2:19 pm
Location: The Netherlands
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M97 Owl Nebula in RGB + Duo Narrowband and manual dithering

#1

Post by Menno555 »

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.

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turfpit
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Joined: Mon Feb 13, 2017 8:13 pm
Location: UK
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Re: M97 Owl Nebula in RGB + Duo Narrowband and manual dithering

#2

Post by turfpit »

Menno

Nice shot of a tricky object. looks like you have some good PS knowledge.

Dave
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