geoflewis

Nicely done Andy, the main features are well seen. It looks like you had better seeing for the set that comprise the 2nd annimation after the GRS has transited Jupiter's meridian.

I don't use SharpCap, for planetary imaging, but you'll find it under camera controls/capture area... Good luck.

That's a nice 1st (2nd) attempt. As you already indicated, I'd definitely add a barlow in future. You capture spped of ~31ms seems a bit slow, so perhaps try something more like 10ms. Can you set an ROI less than your existing 3008x3008 as that would help with faster frame rate. I can't advice on dew control for your scope, but probably a shroud might help, if not some form of heater.

An excellent image Avani. As other UK residents have said, we feel your pain as the weather in the UK has been pretty rubbish too, though to be fair my location on the east of the UK seems to have fared a bit better than other UK regions recently.

Thanks Kostas, it's definitely a tough one to call, so it's good to have your feedback.

I did an overlay and then used the Game recorder to record me changing opacity to show how well what might be Uranus's rings align with the graphic. It looks pretty close to me. Also looks like there's a pixel of noise which just might be Miranda.... Affinity Photo 2023-11-12 17-06-46.mp4

So I stacked 20k frames from the 30k available, so 66% and applied a huge curves stretch in Affinity Photo - what do you think....? I don't see anything when I apply curves to the raw 20k stack, so I'm wondering whether the ring is just an artefact from the wavelets applied in Registax, especially given the dark ring between Uranus and the potential rings.... 🤔🤷‍♂️

Thanks Stuart, I don't usually do Jupiter's moons wide FOV, but decided that I should give them a try. That's not far off as wide FOV as I can get with the C14.

That's the understatement of the century Stuart. I have no clue how Kostas does it....🤷‍♂️

Thanks Stuart, the skies and atmosphere have certainly been kind to me recently.

Thanks Kostas, what a great tool, thanks for sharing it.

Kostas, That's brilliant knowing the dreadful conditions that you had for this. It really is fun seeing Uranus's moons nearly 150m km away, especially when you realise that the largest of them, Titania, only has a diameter of ~1,576 km. Miranda, which is the smallest of the 5 main moons and which I have yet to capture, is not much more that a piece of space rock at a mere ~472 km, about 3/4rs the north to south dimension of England.

So what if I just stack a higher % from that 15m SER?

Thanks Neil, As Kostas commented, it was very clearly seen in the IR image, so here is a crop to show it.

Thanks Kostas, I only got this far because of you excellent guidance, thank you. I did keep stretching the IR image to see if any hint of the rings was there, but nothing. I really have no clue what I'd need to do to capture them, is it longer duration SER, faster or slower capture speed, different gain, etc., etc.

Thanks Pete, effectively yes, almost native FL, but I do still have the ADC in train (mainly because I've got everythinf dialled in as is), so the rig is operating at between F12-F13 rather than the C14's native F11 (which with a moving mirror for focus is never really F11 anyway).

Thanks Reggie, The only previous time I've captured Uranus's moons was with a DSLR camera back in 2014. https://www.astrobin.com/136156/ As the capture notes show that was using DSO capture techniques of nearly 3/4 hour in 3m exposures. Of course Uranus itself was completely overexposed and saturated white.

Thanks Pete.

I hope that you do it, would be great to see it 👌

Thanks Paul, this was in the early hours of this morning, actually the capture stradelled midnight, with a central timestamp of 00:05am. As you probably saw on Sky Safari, Ariel is now on the other side of Uranus between Oberon and Umbriel. I was going to head out again, but it was cloudy, so I'm enjoying a glass of red wine instead 🍷

After a lot of encouragement by Kostas @Kon, I'm pleased to share with you my first image of Uranus showing both it's polar hood and surrounded by 4 of it's moons. This is an IR-RGB image, with the best 5000 frames from a 15m SER captured at 30ms provising all the detail. It's applied as a luminance layer to the best 2000 frames froma a 5m colour SER also captured at 30ms. As usual for my recent planetary images, this was captured with the ASI462MC camera through my C14 XLT.

Thanks. Yes, the IR was so sharp that I had to dial back my normal processing a couple of times. As you say, the methane band is interesting, but I'm still learning that filter.

Thanks Steve

Thanks Kostas, I am using the ZWO CH4 filter that came with the camera - not sure what bandwidth that is. EDIT: it looks like it has a bandwidth of 20nm centred on 890nm.

Another night here of good seeing allowed me to capture 3 different channel (RGB, IR & CH4) views of Jupiter with GRS, plus for a change a wider FOV colour image showing Jupiter with 2 of it's moons, which are Europa to the left and Ganymede, showing some surface features, to the right.. Usual equipment - C14, ASI462MC and ADC. I'm still learning how to capture and process CH4 data, this one being a derotated stack of TIFFS for best 60% from each of 7x2m SERs at 100ms (10fps). Thanks for looking.