Date
1 - 20 of 28
High Res Planetary imaging with the AP1100
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Rouz
Hi everyone,
Just wanted to share a few images taken with the AP1100 and C14 at about 0.1 arcseconds/pixel. The planets were tracked for several hours and lots of data was recorded with the best frames stacked and derotated.
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Rouz
Some more of Jupiter:
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Thomas Giannaccini
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Roland Christen
Those are really great. I assume you used a small Cmos color camera?
Rolando
-----Original Message-----
From: Rouz <rbidshahri@...> To: main@ap-gto.groups.io Sent: Fri, Sep 24, 2021 2:40 pm Subject: [ap-gto] High Res Planetary imaging with the AP1100 Hi everyone,
Just wanted to share a few images taken with the AP1100 and C14 at about 0.1 arcseconds/pixel. The planets were tracked for several hours and lots of data was recorded with the best frames stacked and derotated. -- Roland Christen Astro-Physics
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Robert Chozick <rchozick@...>
Wow. Incredible.
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Roland, you need to come up with a telescope the gives views like that 😀 Robert
On Sep 24, 2021, at 2:41 PM, Thomas Giannaccini <tgiann3@...> wrote:
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Wow! Gorgeous shots! Karen AP
From: main@ap-gto.groups.io <main@ap-gto.groups.io>
On Behalf Of Rouz
Sent: Friday, September 24, 2021 2:41 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] High Res Planetary imaging with the AP1100
Some more of Jupiter: -- Karen Christen Astro-Physics
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dvjbaja
These are amazing. How different Jupiter looked one year ago. jg
On Fri, Sep 24, 2021 at 12:41 PM Thomas Giannaccini <tgiann3@...> wrote:
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Bill Long
Rouz's planetary images are always wicked good. 🙂
From: main@ap-gto.groups.io <main@ap-gto.groups.io> on behalf of Rouz <rbidshahri@...>
Sent: Friday, September 24, 2021 12:40 PM To: main@ap-gto.groups.io <main@ap-gto.groups.io> Subject: Re: [ap-gto] High Res Planetary imaging with the AP1100 Some more of Jupiter:
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Dale Ghent
2.9um pixels so I'm thinking either a IMX290 or IMX462 chip. I'll bet it's the latter for its NIR sensitivity when used with a CH4 filter.
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Amazing images for sure and at not even half-way up in the sky for him. I wish I had seeing like that.
On Sep 24, 2021, at 15:45, Roland Christen via groups.io <chris1011=aol.com@groups.io> wrote:
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Jeff B
Wicked awesome like you read about.
On Fri, Sep 24, 2021 at 3:58 PM Dale Ghent <daleg@...> wrote: 2.9um pixels so I'm thinking either a IMX290 or IMX462 chip. I'll bet it's the latter for its NIR sensitivity when used with a CH4 filter.
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Luca Marinelli
Excellent detail, Rouz! Really fantastic images.
Luca
On Sep 24, 2021, at 4:04 PM, Jeff B via groups.io <mnebula946@...> wrote:
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Rouz
Thank you all, for the kind words.
Had I known you guys enjoyed planetary images, I would have posted them sooner :) Yes all these are with the ASI290mm. I used a PIerro Astro ADC to counter some of the effects of the low attitude. I used the excellent AP barlow at 1.8x to 2x depending on seeing. The C14 was modified a bit with extensive insulation, internal flocking, mirror locks and an external focuser. There was a lot of data gathered to get one good image. Seeing isn't as good as one would think but it's more of a numbers game. Its typically some 300k to 500k frames per night but there would be many nights that result in no useable data.
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Rouz
Jupiter on a very good night:
https://www.youtube.com/watch?v=bK1Yq_ZG5IY Saturn with poor seeing: https://www.youtube.com/watch?v=txtNSpRK1bs
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Rouz
On exceptional nights, you can get the polar hexagon with IR filters and RGB data.
This is probably my favorite of Saturn.
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Roland Christen
Yes all these are with the ASI290mm That's a mono camera, so you employ filters for color. Do you change filters every few seconds or how long between each filter?
Your seeing must be excellent. Around here I cannot get this quality of image with larger apertures. A C14 is almost totally useless, my 17" Astrograph produces mush and the best images seem to come with my 10" Mak or an 8" refractor. The best seeing I have ever experienced was in the Florida Keys and at the tip of Baja California in Mexico. Both sites are surrounded by water and have laminar air flow.
Rolando
-----Original Message-----
From: Rouz <rbidshahri@...> To: main@ap-gto.groups.io Sent: Fri, Sep 24, 2021 3:52 pm Subject: Re: [ap-gto] High Res Planetary imaging with the AP1100 Thank you all, for the kind words.
Had I known you guys enjoyed planetary images, I would have posted them sooner :) Yes all these are with the ASI290mm. I used a PIerro Astro ADC to counter some of the effects of the low attitude. I used the excellent AP barlow at 1.8x to 2x depending on seeing. The C14 was modified a bit with extensive insulation, internal flocking, mirror locks and an external focuser. There was a lot of data gathered to get one good image. Seeing isn't as good as one would think but it's more of a numbers game. Its typically some 300k to 500k frames per night but there would be many nights that result in no useable data. -- Roland Christen Astro-Physics
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Roland,
Yes its 60s per filter, and that's RGB-RGB-RGB on loop for a few hours. You have to use an ADC even with a mono camera. You'll need autostakkert3 to pick the best 20 to 30% of the frames to stack each 60s batch (about 6000 frames for each 60s). And Winjupos to derotate and stack the already stacked 60s frames (complex).
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Rouz
Funny you should mention Florida, I was asked to design a system for the Nasa center there and put together something that should work well with a similar imaging train. Just finished it after several months of work and is being shipped of soon.
Its using the AP 2x barlow.
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Rouz
Its with the CDK20 and 2 refractors for solar and DSO live streaming.
https://www.youtube.com/watch?v=rfqWWxE77CY
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Roland Christen
Well, you're way ahead of me for advanced planetary imaging. I do have a few good images of Saturn with my 10" Mak when the planet was higher in the sky. I'll see if I can dig them up and post if I can find them.
I sure wish I could get decent images out of our 17", but the skies just won't co-operate here.
Rolando
-----Original Message-----
From: Rouz <rbidshahri@...> To: main@ap-gto.groups.io Sent: Fri, Sep 24, 2021 4:21 pm Subject: Re: [ap-gto] High Res Planetary imaging with the AP1100 Roland,
Yes its 60s per filter, and that's RGB-RGB-RGB on loop for a few hours. You have to use an ADC even with a mono camera. You'll need autostakkert3 to pick the best 20 to 30% of the frames to stack each 60s batch (about 600 frames each 60s). And Winjupos to derotate and stack the already stacked 60s frames (complex). -- Roland Christen Astro-Physics
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Rouz
Yes the main challenge is trying to find good frames that the atmosphere hasn't turned to mush!
Also, when you have a lot of frames and very high SNR, deconvolution works like magic. But you'll need a lot of data for it to work well. Derotation is another key. Without it you are limited to a couple of minutes because of the planet's rotation. Even 3 minutes x 6000 = 18,000 frames, when you pick the best ones it isn't much data to work with.
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