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  #21  
Old 21-11-2014, 05:39 PM
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Shiraz (Ray)
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I think that your neximage is a colour camera, which limits what you can do with filters. If you can possibly remove the built in IR filter, you could probably get good results using a 25a red filter, since the Bayer filters that produce the color all leak light at wavelengths just beyond visible and you will get an image in all colour channels.
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  #22  
Old 21-11-2014, 08:30 PM
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OzStarGazer
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Yes, it is a colour camera, although you can also take videos in black and white in iCap (but it's obviously not the same).
Unfortunately I don't know how to remove the IR fiilter. I have never opened or modified a camera and don't want to ruin it... But filters are pretty cheap so I can give the 23A a go. Hopefully it will improve it at least a bit.
Thanks for the advice!
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  #23  
Old 15-12-2014, 09:32 AM
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OzStarGazer
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Finally!!!! Last night I could not sleep. At some stage I got up and went past the balcony. The moon was up there, so I gave it a go. Finally the turbulences were not so bad. It was actually the first time I could get nice images with the NexImage even with no binning, and this was the closest I have ever been to the moon. The craters were huge. With 2x binning the images were even better (most of them don't even need post-work).
After that I even had a couple of hours of sleep in the morning!
At any rate with no binning the magnification is huge. I think it works as a 5-7mm eyepiece with 2x binning, but without binning it is probably like a 3mm eyepiece???
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  #24  
Old 02-01-2015, 07:53 AM
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OzStarGazer
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A couple of days ago ("first quarter" moon) I wanted to give it a go, but when I opened the door of the balcony it was like feeling a hair drier on my face... It was a hot day, very bright and windy too, and the turbulences were enormous. I decided to test the red filter with the NexImage... It improved the turbulences just a little bit, but at the bottom of the images there is a dark stripe. Transparent, but darker than the rest of the image? Is it normal when using a colour filter with the NexImage? Thanks.
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