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Post by Deleted on Jun 17, 2014 21:34:36 GMT
Hi, Yesterday I was able to get a look at the sun with my new ZWO-ASI120MM camera for its first light. Sun very low down as we approach the shortest day, and seeing very poor. Anyway, here is one shot a single BMP image snap from several sequences, FireCapture used on a fast machine. Took some video clips as well but not done anything with that yet. Certainly plenty of action on the sun. I did notice the Newtons interference rings at a higher magnification, which I will post later and ask for comments. I did use another make of mono camera as well without seeing the Newtons rings, so a topic for discussion later. Clear skies... Shevill
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Post by Deleted on Jun 17, 2014 22:14:32 GMT
For a single shot thats not bad at all Shevill. It does show an uneven field illumination across the central part of the image, but the detail is there, and you have captured the surface and proms in one shot. The ASI120 is nknown for newton rings with solar, but apparently flats will remove them. I look forward to seeing more from this combo as you get more accustomed to using it.
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Post by Deleted on Jun 17, 2014 22:21:53 GMT
Hi, Yesterday I was able to get a look at the sun with my new ZWO-ASI120MM camera for its first light. Sun very low down as we approach the shortest day, and seeing very poor. Anyway, here is one shot a single BMP image snap from several sequences, FireCapture used on a fast machine. Took some video clips as well but not done anything with that yet. Certainly plenty of action on the sun. I did notice the Newtons interference rings at a higher magnification, which I will post later and ask for comments. I did use another make of mono camera as well without seeing the Newtons rings, so a topic for discussion later. Clear skies... Shevill Not done much solar work other than with a DIY filter, but looks pretty darn good to me!
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Post by johnno on Jun 17, 2014 22:33:05 GMT
Shevill, I think there is a topic on the ASI forum about newton rings, but overall that's a dam good image with that camera,
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Post by Deleted on Jun 19, 2014 0:48:58 GMT
Shevill, I think there is a topic on the ASI forum about newton rings, but overall that's a dam good image with that camera, Yes, thanks, got some excellent feed back from Sam.
Clear skies... Shevill
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Post by Deleted on Jun 19, 2014 18:20:02 GMT
Looking good Shevill! Looking forward to seeing more from this cam and the usb 3.0 cam if you get one!
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Post by Deleted on Jun 19, 2014 20:27:25 GMT
Looking good Shevill! Looking forward to seeing more from this cam and the usb 3.0 cam if you get one! HI, well, it's a start with a new camera. I will have to use a different processing technique to get rid of the Newtons interference fringes-very obvious in the higher power shots which I did not post.
At the same time I was also testing another very small USB 2.0 machine vision mono camera, just arrived direct from China, I still have some manufacturer contacts who are prepared to do me one off sales for evaluation. At least with this one there are no Newton rings (interference fringes) issues.
Yes, I have placed an order for the ZWO ASI USB 3.0 Colour camera, as a tester, so looking forward to it arriving with some clear skies??
Clear skies... Shevill
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Post by Deleted on Jun 19, 2014 20:33:47 GMT
For a single shot thats not bad at all Shevill. It does show an uneven field illumination across the central part of the image, but the detail is there, and you have captured the surface and proms in one shot. The ASI120 is nknown for newton rings with solar, but apparently flats will remove them. I look forward to seeing more from this combo as you get more accustomed to using it. Hi,
Yes, I will have to do some extra processing on the Ha images from this camera to remove the interference fringes. Reminds me of my days making elliptical flats and testing with monochromatic green light to see how many & shape the fringes were. I see now why the AutoStakkert 2 software is included on the CD.
The uneven illumination occurs when I put the extra 50mm DS unit on, which is not good, something else I need to find out about and what if any the fix is for it?
Clear skies...
Shevill
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Post by Deleted on Jun 19, 2014 20:36:01 GMT
For a single shot thats not bad at all Shevill. It does show an uneven field illumination across the central part of the image, but the detail is there, and you have captured the surface and proms in one shot. The ASI120 is nknown for newton rings with solar, but apparently flats will remove them. I look forward to seeing more from this combo as you get more accustomed to using it. HI,
well, it's a start with a new camera. I will have to use a different processing technique to get rid of the Newtons interference fringes-very obvious in the higher power shots which I did not post.
Clear skies...
Shevill
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