To fix the newton ring problem when do ha solar imging!

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marc whitsett
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Joined: Mon Apr 24, 2017 9:08 pm

Re: To fix the newton ring problem when do ha solar imging!

Post by marc whitsett » Mon Apr 24, 2017 9:17 pm

I have been doing solar imaging for a number of years. The Newton ring issue is real and a pain, and is unpredictable with many theories re: its genesis, etc. I have purchased 5-6 video imaging cameras, and whether they are expensive or cheap it doesn't seem to matter.

I have a TeleVue Pronto for full disc imaging and I have never had Newton's rings with ANY of the cameras.

However, my TV 102 has it with EVERY camera I have tried.

These rings are a nuisance in and of themselves just by the virtue of being there. I hate seeing them visually, and yes you can process them gone, but it is less than aesthetically appealing.

My answer has been solved with the T2 tilter for my ASI 120mm. It works like a charm, and at ~ $38 USA is well worth it for me.

Thus changing the imaging angle against the plane of the telescope lens has fixed the issue. And yes, I am smiling much for that.

Thank you ZWO [this is not a paid ad] for offering this product.

Denababy
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Joined: Tue Jul 25, 2017 9:32 am

Re: To fix the newton ring problem when do ha solar imging!

Post by Denababy » Thu Dec 14, 2017 10:00 am

There is a very good video on YouTube by Wise Imaging that lasts for just over 51minutes.

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Sam
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Re: To fix the newton ring problem when do ha solar imging!

Post by Sam » Fri Dec 15, 2017 7:49 am

Denababy wrote:There is a very good video on YouTube by Wise Imaging that lasts for just over 51minutes.
please share with us
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Denababy
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Joined: Tue Jul 25, 2017 9:32 am

Re: To fix the newton ring problem when do ha solar imging!

Post by Denababy » Fri Dec 15, 2017 10:13 am

Hello there the video shows a picture of part of the Sun and is by Wise Imaging, I do not know how to add a link as I am using an Apple iPad. So the best I can do is suggest you go onto YouTube site and search for Wise Imaging, I think there is only one video by them/ him !!! The video goes from start to finish explaining data acquisition to processing.

bart1805
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Joined: Wed May 30, 2018 9:44 pm

Re: To fix the newton ring problem when do ha solar imging!

Post by bart1805 » Thu May 31, 2018 9:05 am

Another solution is the use of a wedge prism or an Atmospheric Dispersion Corrector. I mostly use a 2 degrees wedge prism and no Newton Rings at all.

Rojoyinc
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Joined: Wed Jul 26, 2017 11:44 pm

Re: To fix the newton ring problem when do ha solar imging!

Post by Rojoyinc » Tue Jul 31, 2018 9:06 pm

ASICAP_2018-04-22_14_14_10_439_g4_ap2321_convflat2.jpg
When I first tried solar with my 1600MMC it had a horrible morie ring pattern. I ordered a tilt adapter plate and a ASI174M.
I tried the 174 and never went back to even try the 1600 and tilt plate.

The 174 had no ring issue.

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Sean.Wang
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Re: To fix the newton ring problem when do ha solar imging!

Post by Sean.Wang » Mon Oct 15, 2018 1:53 pm

skywatcher wrote:where can i download this version 2.5.02 beta ?
Check it on Firecapture home page.
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Don't face one's fate, can't be a real man;
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homegubble
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Re: To fix the newton ring problem when do ha solar imging!

Post by homegubble » Sat Nov 03, 2018 2:53 pm

Sam wrote:many amaturs have this problem when do ha-solar imging.
the image show like this:
Image

this is because the sensor and the ha-filter is not parrallel.
a T2 Tilt-Adjuster can help to solve this problem.
you can find it in TS or OPT
Image

Here is a image from David Cortner show how it works
Image

More info please visit David's blog
http://www.davidcortner.com/slowblog/20130513s.php
Thanks for the link.

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Sean.Wang
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Re: To fix the newton ring problem when do ha solar imging!

Post by Sean.Wang » Mon Dec 10, 2018 7:33 am

You are welcome!
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Location:lon=120.6 lat=31.3
SuZhou China

motto:
Don't face one's fate, can't be a real man;
Don't know manners, can't be gentle;
Don't know meaning behind the words, can't understand man's heart.

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