Kon

It feels ages since we had that amazing night in UK. I have not done any Jupiter imaging since that session! I reprocessed the image. After careful analysis it seems that derotation did not help, even between two continuous captures; lost quite a bit of details. This is the best single capture. First image is the new version and the second is the original I posted on 9th September. Let me know your thoughts.

Yes an overkill. As Mandy said you will not get more out of it you just amplifying the bad conditions more. If you unscrew your barlow and scew the lens on your camera it will roughly be 1.5x. Keep an eye on the maps and try when it's higher up. Make sure you cool the telescope too. I let mine cool for 1hr.

It is unlikely you will get anything decent tonight. Look at the Jetstream. That will cause havoc in your seeing. Scotland hot red, Wiltshire a bit better. I am not getting out with this map😜 What you describe is fine. Regarding focus, it takes time. Until this weekend, I had a box standard focuser. I just upgraded. You will get a feeling when it is good focusing. Try overxpose the planet a bit but go back to a 60-70 histogram for capture. F10 is the native focal ratio? You need to be at 5x the pixel size, maybe x7 under excellent seeing, optimal f15 for your camera. If you are at F10 native, then a x1.5 barlow will do.

I said amongst other parameters. 😉. What you have posted above is decent. Assuming all fine and only seeing, then it is awful seeing you have and I usually don't bother with capture. Exposure time will have an effect together with FPS, f ratio, camera (I am not familiar with svbony) , focusing, sorry seeing, processing. If you want help, try listen to us. As you can see we are all trying to help you out. I started serious planetary imaging in 2022 so not a seasoned imager as others here but I listen to advise and experiment.

I think we are going round and round this topic. We discussed it before and seeing among other parameters is a major player. I image quite a lot and a friend of mine 20miles from me can have better or worst seeing than me. I'll give you an example and rest my case. Jupiter taken by the same user, me, the same equipment (don'g forget I am all manual nothing fancy no ADC either), the same location, enough processing experience. Jupiter under bad seeing and under excellent seeing for uk skies. 8" Dob.

Very nice. Excellent processing and good details.

Just badly resolved SEB at the limb, nothing more.

Excellent image and processing. Nice details despite the conditions.

Thanks Stuart. Indeed, better control on focus. I felt that even under bad seeing I was able to focus a bit better. Let's see what I get with Jupiter , if clouds ever clear at night.

I got a new dual speed focuser for my 200P and I test drive it with Venus this lunch time. I found the focusing a lot easier but I still need to work out a few things. Some details on the UV clouds are coming through. False colour UV and IR filters. 8" Dob, manual, asi462mm, 2.5x TV powermate, IR and UV pass filters.

Nice. Try keep the white balance for consistent colour. The last frame seems the sharpest. Worth processing further.

Thanks. I will give it a rest 😁 as you are all saying that it is nothing to worry about. And you are right the mirror clips are larger than a tiny screw. I just need a star test to finalise the collimation.

Thanks David. It was the 'new' view through the new focuser installed last night, thus my query. I will try Venus at lunch time and see what I get. If the weather holds I will be doing a star test tonight.

Thanks Mandy. I thought so, it was just unusual and since I do a lot of planetary imaging I wanted to make sure it is all ok.

Thanks, we both posted at the same time. I took a better focused one.

It is this screw here. It never showed on my previous focuser. It may be nothing but I wanted to confirm as the others are not showing.

I just got a new focuser (a dual speed low profile crayford) for my 200P and I started collimating it. I noticed that one of the spider vein screws is showing on my primary. I did not have this with the previous focuser. I measured their length and they are equal. Do I need to sort it? I follow astrobaby's collimation and there two screws there. Nothing to worry about? It is between ~ 7 oclock. Collimation needs more tweaking as there is a tiny bit of tilt.

Nice set of images despite the conditions Martyn.

Excellent animation! Nice processing.

Thanks. I have done it so many times that seems a routine process now. How are you getting along with ISS imaging? I remember you had some issues earlier this year.

Thank you both. I am not sure my setup has the resolving power even under excellent seeing.

I had a nice ISS imaging session with my 8.5 year old son tonight. It has been a while due to the times but at 749pm it was perfect. He was in control of the laptop and he was telling me if ISS was on the sensor, which was great help. He also managed a look through the finderscope and was amazed at the speed. Awful seeing with jetstream but using an IR pass filter we got some decent shots. Not my best but always special to capture them with my son. 8" Dob, manual, asi462mm, IR pass filter, 2.5x TV powermate.

The only time I have seen something like it was with Jupiter when I got the reference date/ time wrong; sometimes it calculates it for me but others not so I I had used an old reference. It might be the cause. Others might have better ideas.

I completely missed your post on Venus. What cracking set of drawings and details you managed to pull visually. Regarding your last observation, you are spot on. This was my UV image yesterday, and you can see the brighter limbs that you referred to. Hats off to your observing skills and sketches.

Nice set of images. Good details when I zoomed in.