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Moon @ 8.75 Days - Sept 4,2022

Discussion in 'Astrophotography and Imaging' started by Ed D, Sep 7, 2022.

Moon @ 8.75 Days - Sept 4,2022

Started by Ed D on Sep 7, 2022 at 6:12 PM

11 Replies 664 Views 2 Likes

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  1. Ed D

    Ed D Well-Known Member

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    Three days ago I was lucky to have pretty clear skies. I took advantage and shot 40 frames with my DSLR through the 10" Dob, no tracking. Looking through the individual frames I saw several that were really good. I'm really happy to see what I can do with the big Dob and DSLR on a good night.

    This first image is a resized version of the full image. I had to resize it because the full size image is HUMONGOUS and cannot be uploaded:

    2022 09-04 Moon resized.jpg
    Moon - September 4, 2022

    This image is a small area crop of the original image. I'm posting this crop to give you a feel for the level of detail and the immensity of the original image.

    2022 09-04 Moon Area Crop.jpg
    Small Area Crop - Retained Detail is Very Good

    The following are the immaging session notes:

    SUBJECT: Moon

    LOCATION:
    Miami, Florida 25.61N 80.42W (Bortle 9 White Zone)
    Date - 2022 09-04
    Time - 10:00pm EDT
    Moon - 8.75 days
    Sky Conditions - Clear with a lot of dust and moisture

    EQUIPMENT:
    Imaging Camera - Canon T3i
    Lens - 10" Dob @ 750mm

    ACQUISITION:
    40 frames total
    ISO 200
    Shutter Speed 1/320

    PROCESSING:
    Best 25% frames stacked in AS!3
    GIMP used to desaturate gold color from dust, and to increase exposure
    No sharpening was done to the image

    Ed D
     
    Last edited: Sep 7, 2022
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  2. Mak the Night

    Mak the Night Well-Known Member

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    Nice shot of the 'Wall' (Rupes Recta) Ed.
     
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  3. Ed D

    Ed D Well-Known Member

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    Thanks, Mak. I'm thrilled with what I can do with the big Dob and the DSLR on the moon. Jupiter is now visible just over my neighbor's roof in the later evening. I want to try imaging Jove, which is big and bright, with this setup.

    Ed
     
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  4. Mak the Night

    Mak the Night Well-Known Member

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    You're welcome Ed. The shadow detail is really good in that Moon photo. That big Dob' sounds great. I saw Jupiter earlier at about 22:00 BST. Jetstream has shifted though.

    jetstream.jpg

    Basically covering the whole country. When it does this the seeing is poor. Sometimes the jetstream misses the entire UK. I had brilliant seeing just a few days ago. I think it's starting to shift towards Scandinavia now.
     
  5. Nebula

    Nebula Well-Known Member

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    The first image was done with no tracking at all? Gee it's very clean and sharp!

    To more images for your collection!
     
  6. Ed D

    Ed D Well-Known Member

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    Didn't need tracking. Because the moon is so bright, and the scope so big, my exposure speed was super fast. By taking 40 frames I knew I would get at least one really sharp image. Sky conditions were very good and I got 10 sharp images.

    For planets it's a different story, which is why I got the tracking platform. I already tried using the DSLR in the Dob, but only got a little disk for Jupiter. I will need my planetary cam (ASI290MC) and maybe Barlow lenses to get detail.

    Ed
     
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  7. Nebula

    Nebula Well-Known Member

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    @Ed D I was NOT aware that it was possible to shoot the bright moon at fast exposure speed, I really learn new things every day. It makes perfect sense too.

    Your first picture is impressive, premium grade.

    I might try to sketch Jupiter tonight with my manual 12", the amount of planetary details is incredibly superior then with my tracking 8".. so. I am thinking about an EQ platform like yours later, same brand.

    When I bought my 8" it took 3 observations for me to be very excited even even euphoric it was like a free gift to me. With the new 12", its not the same kind of joy, it's more like a technical joy caused by the upgrade then the sheer initial joy of owning a first good telescope and seeing all these things for the first time.

    I am less tempted to go on a spending spree around the 12 and feel like it needs to be used for a couple of months or even years first. Strange :confused:

    The ASI290MC looks like a cool color camera device. Must be fun to get results on a Dob with EQ platform, it's an economical solution and the results are great +1.

    I will look at your picture when it's available.

    Jupiter is kind of high currently in the middle of the night. Details were not too impressive for me with my 8" last evening, BUT there was an flashy brown barge visible in the middle of the north equatorial belt. Because of that, It's enough to characterize the planetary observation as a success after all!

    To be continued tonight.
     
  8. Ed D

    Ed D Well-Known Member

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    Nebula, the platform I bought is pushing it for a 10", plus I had to fiddle with it to get it right. For a 12" I wouldn't recommend it.

    I believe the ASI290MC has been discontinued. However, the ASI224MC is still available and is a really good planetary cam. How does your 8" track? is it a motorized Dob base? Not sure if field rotation is an issue with the short times involved in planetary imaging.

    If you want to image planets with your 12" you can do it without any tracking: https://www.iceinspace.com.au/63-201-0-0-1-0.html
    This is just one article. A Google search will turn up how-to articles for imaging with a Dob.

    I have imaged Jupiter with my 10" Dob manually:

    Jupiter 2019 07-20 final.jpg
    Jupiter image taken with a 10" manual Dob in 2019

    Astro imaging can turn into a really deep rabbit hole, if you let it. A suggestion would be to pick up a T-thread to 1.25" adapter so you can use your DSLR with a Barlow. You would also need a T-Ring for your DSLR. This is only for a DSLR. The ZWO planetary cameras have a 1.25".

    Ed
     
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  9. Mak the Night

    Mak the Night Well-Known Member

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    Nice shot of Jupiter with a transit shadow Ed.
     
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  10. Nebula

    Nebula Well-Known Member

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    Ahh yeah pretty nice shot of Jupiter and it's beating what I can see. You have plenty of blue clouds there in the Equatorial zone, I have not seen any so far but I have seen white ovals.

    I wrote a message to the guy who built your equatorial platform, he can build one for a 12" +-85 lbs with latitude 46 degree, I don't know if it's exactly the same as yours, that's a good question.

    Do you believe that the design is not suited for the 12" globally even if the platform is a bit larger and adapted?

    My 8" is on a EQ5 for sketching but I also have a 6" newtonians which I can mount on the same EQ5 mount. The 6" F5 this could probably work well to take some shots! I have a RA tracking only, single axis tracking system only.
     
  11. Ed D

    Ed D Well-Known Member

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  12. Ed D

    Ed D Well-Known Member

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    These are a couple of Jupiter images I did with my 6" Mak and ASI290MC in 2018 . This should give you an idea what the ASI224MC and a 6" scope can do.

    Jupiter 2018 06-25 RGB.jpg

    Jupiter 2018 07-01 RGB24.jpg

    Ed
     

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