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  #21  
Old 16-09-2021, 08:48 AM
Hans Tucker (Hans)
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Originally Posted by multiweb View Post
Received the ZWO ADC. It's the cheapest of the ADCs. Most are in the $500 ball park. Top of the range goes up to 3000 euros. The ZWO has good reviews so will give it a go next clear night on Mercury and Venus. I also took the AR window off the camera and I intend to shoot in 16bit SER which is needed to tame noise and be able to record those elusive clouds.
The Tak looks right sexy with a Moonlight Focuser ... bring out the green.

Top of the range ADC goes up to 3000 euros ... and then some. http://gutekunst-optiksysteme.com/.

The ZWO ADC does a good job but I wonder what the go is with the leveling bubble.
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  #22  
Old 16-09-2021, 09:37 AM
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multiweb (Marc)
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The Tak looks right sexy with a Moonlight Focuser ... bring out the green.

Top of the range ADC goes up to 3000 euros ... and then some. http://gutekunst-optiksysteme.com/.

The ZWO ADC does a good job but I wonder what the go is with the leveling bubble.
Yeah it has to be leveled with the horizon so the two prism zero with the level. One goes up and the other down by the same angle until you find the sweet spot.
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  #23  
Old 16-09-2021, 09:41 AM
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Great work there Marc, most shots I've taken of Venus over the years have looked like a white blob! I didn't know it was possible to achieve surface details with amateur equipment. Thanks for enlightening me!
Mine do too mate in IR. I barely seen a tinge of darkness but it could be me wanting to see things. UV is very obvious in comparison but seeing affected a lot more. I'm shooting in 16bit next and I reckon I'll get something with the wider dynamic range when I stretch. Next trial will be over 900nm in IR but I need to turn a filter cell for that one first. It's a a small 10nm bandwidth 12mm filter I got from EO years ago. Too small to mount on anything I have. Should work if I keep it just in front of the sensor.
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  #24  
Old 16-09-2021, 10:42 AM
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Oh my gosh, how did I miss this ?!!!
Amazing work Marc.

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  #25  
Old 17-09-2021, 10:39 AM
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Oh my gosh, how did I miss this ?!!!
Amazing work Marc.

Thanks mate. Sunday night looks clear. I'll be back at it.
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  #26  
Old 22-09-2021, 04:39 PM
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venus

Excellent work Marc, I do enjoy the info you provide too. Having a go tonight on the same planet but its lower on the horizon and no filters so expect blobbiness!!
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  #27  
Old 22-09-2021, 09:33 PM
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Excellent work Marc, I do enjoy the info you provide too. Having a go tonight on the same planet but its lower on the horizon and no filters so expect blobbiness!!
Thanks Graham. Go for it. UV is what gives me the best details but supposedly IR should do too. I'm still to get any though. I can get hint of shades but that's about it.

Got some good signal tonight. Both in IR and UV. I removed the AR window of the camera and shot in 16bit rather than 8bit this time. Made a significant difference with SNR and easier to stretch during processing.
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  #28  
Old 22-09-2021, 09:46 PM
Dave882 (David)
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That’s a really great result Marc. Definite improvement. I had a go this afternoon as well but a bit of a bust for me.
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  #29  
Old 23-09-2021, 06:28 AM
N1 (Mirko)
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That's your best one yet Marc, excellent!
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  #30  
Old 23-09-2021, 08:09 AM
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That’s a really great result Marc. Definite improvement. I had a go this afternoon as well but a bit of a bust for me.
Bummer. Tonight's clear again with likely better conditions so you can give it another go.

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That's your best one yet Marc, excellent!
Yeah that was a bit of a surprise. I could see the UV details in the feed so I reckon removing the AR window played a big part. 16bit vs. 8bit definitely improves contrast as well. My concern was file size and the frame rate is halved but it's the way to go.

Because of increased SNR and lack of noise I'll check if I can possibly detect any cloud motion or rotation with the other streams.

Still no signs of protomolecule though.
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  #31  
Old 23-09-2021, 09:40 AM
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Well nothing seems to be really moving. Might have to try over a longer period of time tonight again and see what I can get. I can't see any large shift in the pattern. Distortion also makes it hard to visualize.

Animated GIF is here.
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