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Post your 8” Planetary results.

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#126 GEC

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Posted 17 October 2020 - 06:22 PM

Mars on 17 October 2020 at 0422 UT with the Celestar 8 and Neximage 5.  Tried the TV 2x barlow this time.  Based on measuring the image, I calculated the focal length at about 4600 mm or about F/23.  

 

CM ~ 209.  D ~ 22".

 

Cheers

 

  

Attached Thumbnails

  • 2020-10-17-0422_1-RGB_pipp_C8F23_l6_ap58_conv+registax+gimp1.jpeg

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#127 rkayakr

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Posted 17 October 2020 - 08:03 PM

Got out and imaged Mars with an old C8, TeleView 2.5X and an ASI178mc. Stacked 4% of 10,000 subs in AS!3 and used the 1.5x drizzle/reduce. Processed in ImagesPlus. South polar cap in upper right.

 

Mars_011836A.jpg


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#128 GEC

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Posted 18 October 2020 - 02:13 PM

Nice image rkayakr. The older C8s are capable scopes.



#129 Tim J Fowler

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Posted 18 October 2020 - 05:48 PM

From last night. I'm just beginning to learn how to image and process planets, and it shows, but I'm still happy with the results because they're better than the last pics I took.

 

Meade 8" LX90 Alt/Az mount

Celestron Omni 2X Barlow 

Canon T3i shooting 1920X1080 @ 30FPS 5X movie mode

Processed using PIPP, Autostakkert, Registax, Gimp and a fossilized version of Paint Shop Pro.

 

 

 

 

Attached Thumbnails

  • Jupiter 10-17-2020 1915 pm est (2).jpg
  • Mars 10-17-2020.jpg
  • Saturn 10-17-2020 2043 pm est.jpg

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#130 Sinemetu63

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Posted 19 October 2020 - 03:23 AM

Just a couple of jupiter's pictures on 10-17-2020. Both with the 8" and 9 mm EP projection, but the second one with the new IR-UV cut filter. Quite surprised by the colour change. I prefer the first picture color-wise but the second is more detailed, this although similar processing in RS6. I'll keep on making experiments as long as jupiter will be visible in acceptable conditions.

CS

Paolo

Attached Thumbnails

  • Giove SC+9 2_17-10-2020_19_45_15_lapl4_ap4_conv-cropped.jpg
  • Giove SC+9_iruv_17-10-2020_20_07_10_lapl4_ap6_conv-res-cropped.jpg

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#131 hyparh

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Posted 20 October 2020 - 02:10 PM

Hi! Very nice thread... the 8" club laugh.gif

 

Here's my best Jupiter result from 2012.

 

C8, 2.5x Powermate, Astrolumina RGB filters, Basler Ace acA640-100gm

 

31.12.2012.jpg

 

...and one from 11.06.2018

 

10-11.06.2018.png

 

RGB Venus 20.03.2020

 

20.03.2020.png

 

 

From here on I'm using ASI290MM.

 

21.09.2019:

 

123-1.jpg

 

 

Mars in C8's prime focus (10.10.2020), 1.5x Drizzle:

 

10.10.2020.png

 

 

Here in very good to excellent seeing last night.

C8, 2.5x Powermate (reduced to 2.0x via extension tube), Astrolumina RGB filters, ASI290MM.

 

Big_Mars.jpg


Edited by hyparh, 20 October 2020 - 02:33 PM.

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#132 russ75

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Posted 20 October 2020 - 04:46 PM

Here's a montage of Saturn, Jupiter, and Mars. The images were taken from Rodeo, New Mexico on October 10, 2020. Jupiter and Saturn were low in the southwest (20-25 degrees above horizon) in smoky haze. Mars was rising in the east about 40 degrees above the horizon. Seeing was poor-very poor. Equipment: Celestron C8 (203mm f/10), 3X Barlow, ZWO ASI224MC.

 

gallery_30736_10501_15580.jpg


Edited by russ75, 20 October 2020 - 09:05 PM.

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#133 Foc

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Posted 21 October 2020 - 04:18 AM

I have been waiting a long time to add a nice C8 image but the weather has not been kind.  This year being located to the East of the Great dividing range seems to have meant being divided out from good seeing or even clear nights and the coming week continues a pattern of rain and cloud.   Many of you have also suffered from getting bad picks in the 2020 seeing lottery and thus would know how happy I was to get a few hours of fairly clear sky and within that window a half hour of modest seeing which allowed me to capture the following.

 

 

Attached Thumbnails

  • Mars 2020.jpg

Edited by Foc, 21 October 2020 - 04:19 AM.

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#134 russ75

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Posted 21 October 2020 - 12:24 PM

Hi Foc,

 

Nice image of Mars. It seems we captured the same region but ten days apart.

 

Just for fun, I took my Mars image from the montage above rescaled it and adjusted color balance and levels.

 

Pretty similar results?  What equipment are you using? I see we are both using a C8.

 

 

Attached Thumbnails

  • mars_101020_russ_foc_compare.jpg

Edited by russ75, 21 October 2020 - 12:45 PM.

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#135 Kiwi Paul

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Posted 21 October 2020 - 02:31 PM

Hi Foc,
We have a similar issue in that we live near or just to the lee of ranges/mountains. I too have been frustrated with poor seeing, much of it caused by winds. We get our share of jet stream winds - pretty common with all the travelling fronts we experience at this time of year (can’t wait for summer when these are to the south of us but the planets will be gone!) Anyway, I keep an eye on the low level winds as well. I suggest going to windy.com and under winds and ‘more layers’ try a level around 925hPa. When these are light along with the jet stream you have a fighting chance of good seeing. The low level flow over the mountains creates turbulence (density differences). After light winds in the low levels, if I see this level strengthening, I know my seeing will deteriorate.
Cheers Paul
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#136 Foc

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Posted 21 October 2020 - 05:44 PM

Hi Russ,

 

We have a similar name as mine is Ross!  And yes I have a very similar image to yours taken from the other side of the world. My image was larger because I drizzled, which I have just started doing although Mars has not given yet me much to really take advantage of that technique.  I am using the ZWO 462mc fitted with ADC (as Mars was roughly in the region of about 45 degrees altitude) and a Antares 1.6x barlow to better match the 462mcs smaller pixels.

 

Hi Paul,

 

I have seen many of your posts and I know that you have been troubled by this years weather as well.  Lately I have been having to grab any night with cloud breaks.  I have missed some better seeing near dawn because I have parental responsibilities in the mornings.  But if I get a stack of clear nights predicted I will take your suggestion for winds and as yes as well as the big range to the East I have a local hill just behind me at the South.



#137 Kiwi Paul

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Posted 21 October 2020 - 07:36 PM

Foc. Good luck with that good weather working out. I would think that the big range to your east would be your main spoiler in larger scale low level (and higher level) air flows. I don’t let a poor looking forecast stop me from having a look but at least you know what might be coming - ‘hope springs eternal’!
Cheers Paul
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#138 russ75

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Posted 22 October 2020 - 09:05 AM

Foc,

 

What a coincidence. Similar names, similar equipment, near-identical images of the same region of Mars. We also share one more similarity. Like you and Kiwi Paul, I too suffer from unending bad seeing here in Oklahoma USA. That's why we traveled to New Mexico USA in search of steady skies for Mars' opposition and close approach week. Unfortunately, our search was futile. While the nights were clear for the entire week, the seeing was very unsteady, usually very poor-poor (bubbling undulating images, difficult to focus on large scale features). On the night of October 10th, however, there were a few short minutes of improved seeing to what I'd call poor-fair. During that short interval I was able to capture the video sequence that produced the image posted above. Here's a snippet from that sequence.

Attached Thumbnails

  • Mars_055726_101020c-min.gif

Edited by russ75, 22 October 2020 - 09:05 AM.

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#139 Kiwi Paul

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Posted 22 October 2020 - 01:44 PM

Hi Russ,
Looks like you had fighting chance of at least getting something. I would think you probably got a half decent image after processing.
I’ve had a couple more disappointing nights with wind boiling images so last night I experimented with cranking up the Frame rate with exposure at 2.5ms I managed about 240 FPS and I thought to heck with it, went for 5 minutes for a total of about 66,000 frames! I’ve never collected that many before. My old laptop will likely buckle under that load!
Cheers Paul

#140 russ75

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Posted 22 October 2020 - 04:42 PM

Paul,

 

If your laptop survives, I think you might get something. To get the video above, I had to crank the frame rate up to approximately 190 FPS and exposures around 3 ms to beat the boiling mess. Good luck. Let's hope you can harvest a good image from those 66,000 high speed frames.


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#141 Kiwi Paul

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Posted 22 October 2020 - 04:53 PM

It looks like AS!3 has already fallen over. I don’t think it can take a file that big. May have to split it in two. I think the file was 9.5 Gb!

cheers Paul 



#142 russ75

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Posted 22 October 2020 - 05:09 PM

You choked it. You may need to feed it smaller bytes. shocked.gif



#143 aeroman4907

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Posted 22 October 2020 - 05:36 PM

It looks like AS!3 has already fallen over. I don’t think it can take a file that big. May have to split it in two. I think the file was 9.5 Gb!

cheers Paul 

Try a 120GB file for a lunar video!  It takes my laptop 4 hours to stack that video, but I did apply the1.5 gaussian blur both horizontally and vertically in the analysis portion.  I also had 30,000+ AP points.  If I didn't apply the gaussian blur to the analysis portion, it might have taken a paltry 3.25 hours.



#144 kisstek

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Posted 22 October 2020 - 08:21 PM

It looks like AS!3 has already fallen over. I don’t think it can take a file that big. May have to split it in two. I think the file was 9.5 Gb!

cheers Paul 

My lunar 16GB file took about 1 hour last night and again this morning. Most of that time it's "Allocating essential memory". Like 30-40 minutes of the total processing time!



#145 Kiwi Paul

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Posted 22 October 2020 - 09:10 PM

Wow. My file did process on the end. It took 1 hour 40 mins and although the seeing was really poor - about 3-4/10 this image using 6000 out of 66600 frames was a little better than slower speed captures:

 

Mars 20201023_23_55_59_3xdz_lapl4_ap27_6000f.jpg

 

Not great eh?

 

Cheers Paul


Edited by Kiwi Paul, 22 October 2020 - 09:15 PM.

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#146 aeroman4907

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Posted 22 October 2020 - 09:24 PM

My lunar 16GB file took about 1 hour last night and again this morning. Most of that time it's "Allocating essential memory". Like 30-40 minutes of the total processing time!

I am desperately waiting for Emil to release AS!4.  Even if it only decreases the processing time by half I would be very pleased.



#147 Kiwi Paul

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Posted 22 October 2020 - 09:32 PM

Yes. I watched his 1 hour and something interview where he talked about AS!3 and the next version 4. He did say it was considerably faster and will be out soon. I was thinking it would be nice to be able to save the quality ranking from the first section before moving onto stacking. This would allow one to play with a smaller quality ranked file. (Perhaps this is possible and I don’t know about it?)
Paul

#148 kisstek

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Posted 23 October 2020 - 12:20 AM

I am desperately waiting for Emil to release AS!4.  Even if it only decreases the processing time by half I would be very pleased.

If there was a Mac version, that would cut my time in half by eliminating some of the copying of the video files. But I'm grateful I have AS!3 at all so not too much belly aching.



#149 Foc

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Posted 23 October 2020 - 07:16 AM

IMAGING UNDER A CLOUD

 

It was a murky night, last night!  But the thickening clouds were thin enough to image through for about 4 or so hours.  It was not a nice thin stable haze, imaging was done through varying amounts of mobile cloud as if a turbulent muddy river was passing over the planets..  When I first went to Mars it looked in firecapture like a feeble shadow of Kiwi Pauls above post on Mars in poor seeing  I lost a bit of heart as I already have a great collection of Mars images captured in poor seeing.  There was a bit more detail than appeared on the firecapture surface but I did not know that at the time and so went for a bit of a ramble to the nicely grouped Saturn, Jupiter and the moon.  Saturn had a weird albino appearance in firecapture causing me to keeping checking that color was on when I was not recording. Its soft ghastly white hues arose because of the cloud.   Jupiter showed a pale murky brown image and was worth a second look due to the interest of the GRS.  However subsequent Jupiter captures were not as nice.   Its perhaps the last GRS transit I will catch this year as Jupiters time in our night sky is shortening quickly.  Almost certainly in any case the last GRS transit for October here if the forecast can be believed and so it was nice to still see a little detail including a hint of the BA oval.

 

In contrast the nearby moon had a small piece of quite nice seeing for bagging Posidonius. 

 

The combination of cloud and light pollution made Uranus too troublesome to find.  So it was back to Mars to try and catch one or more of its moons . I caught one and possibly the second but even when the image is inverted they only show as extremely faint smudges against blob of overexposed Mars, appearing like some psychology ink blot test. 

 

Then I tried an IR-bypass filter with the ZWO 290mm which did give me some more definite and cleaner albedo features to try to focus on.  But I am not a huge fan of this black and white Mars and so went back to my color cam, needing exposures of 3 and subsequently even over 4ms to get the histogram to the 50% mark in these conditions so as to add the views of  Syrtis Major moving across the face of Mars to my never to be repeated 2020 Mars Opposition journey. 

 

Hope that some of these images are of some interest to the rest of you as well as you enjoy your own Solar System adventures.

Attached Thumbnails

  • October 22 2020 combination.jpg

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#150 Kiwi Paul

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Posted 23 October 2020 - 04:53 PM

Hi Foc
I enjoyed reading your story laced with a little nostalgia. Your Mars shots are very detailed and Jupiter still looks good with a good colour palette. I noticed yesterday that it is now about 37 arc sec which is a full 10 arc seconds small than a opposition. Your Posidonius is excellent. I think I will be doing more lunar imaging as the planets fade away for this year.
The clouds finally have largely stayed away for the last 4 nights but persistent low level wind flow has kept seeing poor like the image I recently posted just above. But 5 nights ago we had cloud and no wind and I had setup hoping for a break in the clouds and I got a 5 min break late evening and was able to capture one 4 minute clip in 7-8/10 seeing. I am reposting it here. It may well be the last really good shot I get, especially of Syrtis Major:

cheers Paul 

Attached Thumbnails

  • 65E60D89-C332-4A94-85EE-276F0079D52B.jpeg

Edited by Kiwi Paul, 23 October 2020 - 04:55 PM.

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