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Jupiter and io with its shadow

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#1 moonwatching ferret

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Posted 24 May 2018 - 12:31 AM

for some wierd reason in one image the disk came out much better and the moon worse and its opposite in the other image  16f7  asi 224mc 2x barlow and adc. one is 800 or 900 i forget the other is full screen

2018-05-24-0232_2-L_AS_f3000_g6_ap51_2.jpg

2018-05-24-0255_4-L_AS_f5000_g6_ap53_3.jpg

 

 


Edited by moonwatching ferret, 24 May 2018 - 10:31 AM.

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#2 siriusandthepup

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Posted 24 May 2018 - 12:52 AM

lol - I was just out watching that.



#3 tommy10

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Posted 24 May 2018 - 12:58 AM

Great photo, just got in from watching the transit com my backyard, thanks for sharing.

 

for some wierd reason in one image the disk came out much better and the moon worse and its opposite in the other image  16f7  asi 224mc 2x barlow and adc. one is 800 or 900 i forget the other is full screen

attachicon.gif 2018-05-24-0232_2-L_AS_f3000_g6_ap51_2.jpg

attachicon.gif 2018-05-24-0255_4-L_AS_f5000_g6_ap53_2.jpg



#4 Kokatha man

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Posted 24 May 2018 - 03:24 AM

Not bad Ferret. waytogo.gif

 

When you see that ring artefact around the moon's shadow you know that you have sharpened (btw, that means either by decon or wavelets wink.gif ) too much...you could get the best of both worlds (get the pun?) by following one of my CN tutes to avoid this & "pull the moon off of Jove for a 3-D effect" as well, as I put it on another forum last night...but I won't put a link to it knowing how much you hate actually reading my stuff..! rofl2.gif


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#5 lukasik

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Posted 24 May 2018 - 09:46 AM

Nice captures!



#6 happylimpet

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Posted 24 May 2018 - 09:53 AM

Possibly Io is blurred on the second image as it moved substantially during the capture relative to the limb, and AS locked onto the limb, blurring Io. When its on the disk its the most high contrast object so AS locks onto it and it doesnt blur.  Just a theory!

 

Also - if that ringing is from using deconvolution, its a sign that you have the radius/FWHM set too large.


Edited by happylimpet, 24 May 2018 - 09:54 AM.


#7 moonwatching ferret

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Posted 24 May 2018 - 10:10 AM

Not bad Ferret. waytogo.gif

 

When you see that ring artefact around the moon's shadow you know that you have sharpened (btw, that means either by decon or wavelets wink.gif ) too much...you could get the best of both worlds (get the pun?) by following one of my CN tutes to avoid this & "pull the moon off of Jove for a 3-D effect" as well, as I put it on another forum last night...but I won't put a link to it knowing how much you hate actually reading my stuff..! rofl2.gif

don't ever think I hate reading your stuff its just that I happen to be an extremely busy person at the moment. I was non stop all day yesterday working mostly on a huge motor home under a hot Florida sun. visiting mom in the nursing home in the evenings/ which I passed on last night being to tired. all i wanted to do is set up my scope to image mars but decided this morning at 4am i needed rest more then another blurry image of mars that hardly anybody will care about aside from a handful of people on this forum.

as for over sharpening yes i do realize that's what that ring means. it also creates that ring around the planet also called gibs effect ? also creates f ring effect lol from my f ring post last year when I thought i captured saturn's elusive f ring, I feel like a dummy posting an over sharpened image after lecturing on 2 recent threads DON'T OVER SHARPEN foreheadslap.gif ' however it was late and i was tired so the image was posted lol 

 

 you need to get your own custom smiley face cartoon of a smiley face strangling a ferret lol . it would be nice to post a link to your tute I would appreciate it and red it



#8 moonwatching ferret

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Posted 24 May 2018 - 10:39 AM

I would like to still say it was bad seeing or at least not the typical seeing. I had issues with trying to keep io's shadow as a solid disk without it breaking apart fom turbulence i re processed the image a bit softer  also noticing a ring around the shadow almost immediately after raising radius even slightly, here is an over sharpened and a some what softer image I also tweeked Jupiters orientation

2018-05-24-0255_4-L_AS_f5000_g6_ap53_3.jpg

2018-05-24-0255_4-L_AS_f5000_g6_ap53_2.jpg

 


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#9 moonwatching ferret

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Posted 24 May 2018 - 10:44 AM

as for color . i noticed when looking in the scope with a actual eyepiece a 13 nagler Jupiter is indeed very pale. the equitorial bandss arent red its like with my Saturns images when people want to hit that rgb balance and it turns saturns rings blue. when i look at saturn its all yellow ???? , its another thing i notice is allot of people want to over color there Jupoiters images this is the most color i could get aside from giving it false color with to much saturation this is the best i could do



#10 Kokatha man

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Posted 24 May 2018 - 08:06 PM

...yes, Saturn is creamy-yellow & Jove much paler in ep's Ferret - I think we have to appreciate that a stacked & processed image captured by a cmos or ccd sensor is a different kettle of fish to that through an ep: forgetting about anything else it is first & foremost an "enhanced" image compared to the ep view so one line of thought would be that it is quite rational to see a somewhat different appearance...one can only wonder at what sort of impression folks would get looking out a porthole as we begin to approach these planets! bigshock.gif

 

I personally have a leaning towards those types of images that reflect what we see in our own cloudscapes here on Earth...& often say to Pat as we're driving along "that looks like those patterns you see on Jove's blah-blah..." or somesuch.

 

I very rarely achieve it - & they're certainly not our most detailed images - but this variety of image is a reasonable example of what I hope for as a sort of Jovian view as we start to see it from further out as our space-ship approaches. lol.gif (which does of course have the specific atmospheric conditions at capture as well as the processing as part of it's "appearance") 

 

http://momilika.net/...rgb_dpmTILT.png

 

Obviously here we've just broken out the vino in celebration & are having trouble looking at it squarely - & it might be why it's a tad blurry also..! rofl2.gif

 

Anything I say is just commentary with my weird sense of humour, as I'm sure you appreciate Ferret...it can be very hard to process moons & shadows on the disk in a balanced way, just as it can be to get Saturn & the rings correct in the self-same processing...& why something like P/shop can be valuable using "mask layers" where you can make an image for the disk & another for the rings or moon & shadow & sit them on top of each other.....you essentially rub out the parts where you want the better parts of one processing to show through onto the other - I'm pretty sure GIMP has that function also.

 

I posted the layer mask approach in a set of images etc here on CN a year or 2 back now...& I think it was earlier this year I did one here on Jovian moon selection & enhancement...it is essentially increasing the clarity of the moons when they are on Jove's disk by selecting them & applying a slight increase in sharpness & contrast but not letting this process displaying any adverse effect on the disk afterwards - very easy tbh, but I must get all those tutes I only posted on CN etc & put them on my website...but it's a real p.i.t.a. finding them sometimes.

 

You're doing fine Ferret! waytogo.gif waytogo.gifwaytogo.gif  

 



#11 moonwatching ferret

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Posted 24 May 2018 - 10:11 PM

 thanks daryl.it means allot to me lol I was going to venture out tonight but the sky does not look to promising and more rain over the next few days. doesnt look good. iIf my ferret memory serves me correct last year after Jupiters opposition I didnt get a decent chance to image Jupiter till your Jupiters looking rustic thread. so I hope i can get some decent images of mars but florida it=s a tropical place with t storms everyday which means bad seeing oh well just have to keep my paws crossed


Edited by moonwatching ferret, 24 May 2018 - 10:12 PM.



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