NGC7000 by ASI183MC & VR3XII Filter

I was pointing the scope to the sky under the July 4th fireworks-anywhere situations last night. I wanted to verify how VR3XII filter worked with OSC camera.

First, a following was my last test with ASI183MC and LPS-V4. As shown below, B/G were much stronger than R. Since the controller has no WB function, I think this was the native color output through LPS-V4 from a camera, if my understanding is correct.


ASC183MC + LPS-V4, probably 1 minute exposure

So I wanted to attenuate B/G more.


ASI183MC + LPS-V4 + VR3XII, 4 minutes

This was what I expected and as a result, fortunately VR3XII allows me to increase longer exposure while reducing B/G saturation. The above was 4 minute exposure at my backyard under the bright sky.

Final image result? No good and various image processing errors. But I gave up further efforts and spending more time any more. This is the result anyway…… This pushes me back to take DSLR again. DSLR’s image processor or Adobe Image RAW does very good job to create color reproduction, seems to be so at least to me and my skill. I like to continue by that way. But 183MC camera will be still needed for small galaxies anyway.


BORG 55FL F3.6 +ASI183MC + LPS-V4 and VR3XII filters, 28 x 4′ dithered by SS-one KODO

This test purpose was to suggest you one of options how it “optically” adjusts the color balance instead of “electrically”.


SS-one KODO and ZWO Image Capture DX side-by-side for dithered imaging


~ by tedishikawa on July 5, 2018.

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