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Old 26-10-2023, 09:44 PM
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CoolhandJo (Paul)
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Saturn

My first real image of Saturn. Second light my skywatcher Maksutov - Cassegrain 102mm and svbony 2 x barlow and ASI 224mc planetary cam. 30 sec vid capture stacked.
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Old 26-10-2023, 11:01 PM
Dave882 (David)
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Nice work Paul. Thatís great for a first capture of Saturn! Note that you can capture 3min videos with Saturn without rotational blurring and even longer if you derotate. With more data you can select more Ďgoodí frames and your noise will be reduced.
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Old 27-10-2023, 06:30 AM
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Nice work Paul. Thatís great for a first capture of Saturn! Note that you can capture 3min videos with Saturn without rotational blurring and even longer if you derotate. With more data you can select more Ďgoodí frames and your noise will be reduced.
Good to know Dave. It's a good feeling to do some planetary for a change. I'm definitely going to try and get better at it. BTW do you recommend ADC to correct the image? My FL is over 1300
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Old 27-10-2023, 05:00 PM
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If used correctly, an ADC will give an improvement (although since Saturn is quite high in our sky it will be very small difference). Itíll make more of a difference for Jupiter. But having said that my suggestion would be to keep it simple and get your basic capture parameters right first and then add the adc for that extra boost. Just my 2c

Iím by no means an expert, but hereís a few general tips:
- Seeing/transparency is #1. If itís so blurry that youíre struggling to focus itíll be impossible to get that fine detail.
- Makes sure your scope is acclimatised. Iíve got my sct wrapped and donít turn the dew heater on.
- Perfect collimation. Get this dialled in on a night of excellent seeing.
-Perfect focus. Focus on the planet regularly. Fire capture / ASICAP can manipulate the screen contrast/brightness to help you. Take your time. But if the conditions are crap itíll be hard to get it spot on.
- Set the histogram carefully. Donít let it go above approx 60% or youíll blow out the bright areas.
- Set the fastest frame rate as possible by reducing your ROI, use usb3. Iíve found ASICAP give me the best frame rate but others prefer Firecapture.
- Capture 1-2min for Jupiter, 3-5min for Saturn. If at top of this range youíll need to derotate with Winjupos.
- Best results can be had by capturing multiple images over the space of say 15-30min and detrotating and combining these together in Winjupos. Thereís some good info online to help with this.

Hope some of that helps you out
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Old 30-10-2023, 08:13 AM
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CoolhandJo (Paul)
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Originally Posted by Dave882 View Post
If used correctly, an ADC will give an improvement (although since Saturn is quite high in our sky it will be very small difference). Itíll make more of a difference for Jupiter. But having said that my suggestion would be to keep it simple and get your basic capture parameters right first and then add the adc for that extra boost. Just my 2c

Iím by no means an expert, but hereís a few general tips:
- Seeing/transparency is #1. If itís so blurry that youíre struggling to focus itíll be impossible to get that fine detail.
- Makes sure your scope is acclimatised. Iíve got my sct wrapped and donít turn the dew heater on.
- Perfect collimation. Get this dialled in on a night of excellent seeing.
-Perfect focus. Focus on the planet regularly. Fire capture / ASICAP can manipulate the screen contrast/brightness to help you. Take your time. But if the conditions are crap itíll be hard to get it spot on.
- Set the histogram carefully. Donít let it go above approx 60% or youíll blow out the bright areas.
- Set the fastest frame rate as possible by reducing your ROI, use usb3. Iíve found ASICAP give me the best frame rate but others prefer Firecapture.
- Capture 1-2min for Jupiter, 3-5min for Saturn. If at top of this range youíll need to derotate with Winjupos.
- Best results can be had by capturing multiple images over the space of say 15-30min and detrotating and combining these together in Winjupos. Thereís some good info online to help with this.

Hope some of that helps you out
Great. Very helpful. Thanks!
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