Hi All,
I realise that in the past 2 years, there was little to image on the sun. Now the sun is coming to life, I have managed (with advice from you all) to improve my technique and imaging.
Today, I was trying to adjust my ZWO tilt adjuster to reduce or eliminate Newton Rings, but after over 1 hour, I gave up. I then used Firecapture to capture data, and was making progress (with flat field calibration), I was starting to do a full disc with over 10-15 images (I have not counted yet), and the last few panes was affected by tree branches blocking the sun !!
Anyway, I think there is more cloud coming up, so maybe there is plenty of time to do solar later in the year.
I did a quick process of one of the images (there are total 100 GB from 2 days imaging).
I think NRs are mostly removed but still affect my resolution and detail. NR are removed with ImageJ. I am now waiting for a GSO focuser and ASI174mm all the way from USA. Maybe the 1.40 USD exchange rate will work in my favour despite the postal fee of 50 USD.
I may get the Daystar eliminator if I get NRs with the ASI174 camera.
Quark Chromosphere/ED70/0.5x focal reducer/ASI120mm-S/AS!3/ImageJ/ImPPG/Photoshop
Thanks for looking.
Magnus
The Sun 22nd April 2021
- Radon86
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The Sun 22nd April 2021
Solar: H-alpha": Quark Chromosphere filter; Baader white light filters
Scopes: Altair Astro Travel ED70mm (F 420mm, D=70mm);; Skywatcher 90mm (F 910mm D=90mm); GSO focuser;;Altair Astro 60mm guidescope (D=60mm,F=225mm)
Cameras: ASI120mm-S,ASI174mm
Mount: SW HEQ5 Pro, SW EQ3 Pro Synscan (SW = Skywatcher),Vixen Polarie tracker (portable setup)
Accessory: SW Auto-focuser
Scopes: Altair Astro Travel ED70mm (F 420mm, D=70mm);; Skywatcher 90mm (F 910mm D=90mm); GSO focuser;;Altair Astro 60mm guidescope (D=60mm,F=225mm)
Cameras: ASI120mm-S,ASI174mm
Mount: SW HEQ5 Pro, SW EQ3 Pro Synscan (SW = Skywatcher),Vixen Polarie tracker (portable setup)
Accessory: SW Auto-focuser
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Re: The Sun 22nd April 2021
That's an excellent pair of images Magnus - showing so much detail.
Well done and thanks for sharing
Terry
Well done and thanks for sharing
Terry
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Re: The Sun 22nd April 2021
Looks good, Magnus.
I'm unfamiliar with the ASI120. In my case, the sweet spot on the tilting adapter (with an ASI174) is the most minor of tilts (just a small nudge of its non-tilted position), which removes the NR's completely. So once you get the ASI174, it should be fairly easy to solve.
I'm unfamiliar with the ASI120. In my case, the sweet spot on the tilting adapter (with an ASI174) is the most minor of tilts (just a small nudge of its non-tilted position), which removes the NR's completely. So once you get the ASI174, it should be fairly easy to solve.
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Re: The Sun 22nd April 2021
Lovely Magnus.
I suffer from NRs and abandoned my tilt adapter. I found it too fiddly especially when the NRs only
seemed to appear when I pushed the processing. I had reasonable success with plastic bag flats and more so
with allowing drift ( if possible ). If all else fails I use the FFT solution in ImageJ/Fiji but that is not always easy.
NRs are a big pain.
Best wishes,
David
I suffer from NRs and abandoned my tilt adapter. I found it too fiddly especially when the NRs only
seemed to appear when I pushed the processing. I had reasonable success with plastic bag flats and more so
with allowing drift ( if possible ). If all else fails I use the FFT solution in ImageJ/Fiji but that is not always easy.
NRs are a big pain.
Best wishes,
David
Making the possible difficult and the difficult impossible.
Photos : https://www.flickr.com/photos/daviddench/albums/
Photos : https://www.flickr.com/photos/daviddench/albums/
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Re: The Sun 22nd April 2021
Fantastic activity on just a small area of the disc, what a shot!! Newton's rings are the biggest pain in Halpha
Alexandra
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Re: The Sun 22nd April 2021
Nice shots, interesting about the exchange rate...
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!