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Old 22-09-2018, 11:06 AM
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cometcatcher (Kevin)
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My first RGB planet image

This is my very first RGB image of a planet. My new filter set arrived yesterday so thought I'd give it a try with my also new ZWO ASI183mm Pro. I've never liked the thought of imaging planets with a mono camera, but in reality it's really not that hard. Just take three sets of AVI's rather than one. I was surprised how well the red spot showed up on the green and blue filters.

I wound the gain up a bit so I could reach 50fps and used 800x600 ROI. The scope was a deforked Meade LX90 ACF 8" F10 SCT on a HEQ5 Pro. Camera was at prime focus as this seemed to suite the 2.4um pixels the best.

Oh and this was also taken before sunset as I have obstructions to the west lower down. The wind was blowing a gale so killed off 50% of frames to 500 per channel. Io and Europa can be seen on the left.

Captured in Sharcap, aligned in PIPP, stacked in Registax and processed in Photoshop.
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  #2  
Old 22-09-2018, 12:01 PM
Dennis
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Good work Kevin, in fact very good considering its your 1st RGB and the les than optimal conditions.

You seemed to have climbed the RGB mountain and tamed it.

Cheers

Dennis
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Old 22-09-2018, 12:44 PM
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cometcatcher (Kevin)
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Thanks Dennis. Jupiter will be too low for more images now so this might be my last Jupiter for the season. Have to try Saturn next, but the wind is forecast to keep blowing for the next week. Then it's back to deep sky for me.
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Old 22-09-2018, 02:45 PM
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RickS (Rick)
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That's an excellent result for your first RGB planet, Kevin!
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Old 22-09-2018, 06:14 PM
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That's an excellent result for your first RGB planet, Kevin!
Thanks Rick. The filters seem parfocal and density matched which makes it easy.
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Old 22-09-2018, 07:56 PM
foc (Ross)
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Very nice Kevin,
If your images are this good on Jupiter under bad conditions you will be showing us some tremendous Mars and Saturn shots very soon.
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Old 22-09-2018, 11:17 PM
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Very nice Kevin,
If your images are this good on Jupiter under bad conditions you will be showing us some tremendous Mars and Saturn shots very soon.
Thanks Ross. Yes I must have a go at Mars with this setup before it gets too small. Saturn too.
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Old 23-09-2018, 05:02 PM
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Wow.
You are a natural.
First go...amazing.
I bet you are really happy with the new gear.
Alex
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Old 23-09-2018, 09:31 PM
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Thanks Alex. Yes really happy with the ASI 183mm Pro. Beats everything else I've tried.
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Old 24-09-2018, 06:56 AM
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Very nice Kevin, the red spot really stands out. I'm looking at getting a new guide cam (mono) my osc at times isn't sensitive enough with the oag, I wonder if screw in filters would be too fiddly for a bit of planetary?
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Old 24-09-2018, 11:04 AM
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Very nice Kevin, the red spot really stands out. I'm looking at getting a new guide cam (mono) my osc at times isn't sensitive enough with the oag, I wonder if screw in filters would be too fiddly for a bit of planetary?
Thanks Rick. I've been using screw in filters up until I got my filter wheel for deep sky. That wasn't a problem since DSS can rotate or register the RGB frames. But DSS doesn't work with planets. If you can compensate for field rotation from slight misplacement when you drop the camera assembly back in you would be okay.

By the way manual filter wheels are pretty cheap on ebay.
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Old 26-09-2018, 08:10 AM
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Originally Posted by cometcatcher View Post

By the way manual filter wheels are pretty cheap on ebay.

It still all adds up, $70 filter wheel, $150 filter set and $500 mono cam.....halfway to the cost of a ZWO ASI294MC cool, might just have to rough it a bit longer, planetary is a just a filler for moon light nights anyway.
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Old 26-09-2018, 10:31 AM
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cometcatcher (Kevin)
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It still all adds up, $70 filter wheel, $150 filter set and $500 mono cam.....halfway to the cost of a ZWO ASI294MC cool, might just have to rough it a bit longer, planetary is a just a filler for moon light nights anyway.
It does add up. I decided to go mono because I like to experiment. I also wanted finer resolution than something with the bayer matrix would give.

Same here with planets being a filler. Though you can still image in narrow band with moonlight using a mono. Stupid sky is almost always clear when there's a full moon.
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