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Recently I bought a ZWO ASI178MM for planetary/lunar/deep-sky imaging and last weekend i had clear skies so I was able to capture videos of the moon in two panels. I have already processed the videos in AutoStakkert, I used 3x drizzle because I intend to print the image so now I have two 120MB TIFF images that i would like to combine in a two panel mosaic. I tried doing it in Hugin, a free panorama stitcher but the program crashes due to the file sizes being too large. I have searched for tutorials on using DynamicAlignment in PixInsight but it seems to me that i'll need a reference image to be able to create mosaics in PixInsight. Is there any way to go about this, I feel like this should be a pretty straightforward job but I am not very experienced in PI so I would really appreciate some advice.
I tried using DynamicAlignment as you can see in the attached screenshot but the result was just a cut version of the target image, aligned perfectly to the source image. It would be perfect if it didn't cut off the lower part of the target image.
I'm not experienced with LRGB imaging, so thought i'd give it a go on M81. However, when i combine the 4 individually processed integrations i end up with horrible colour hues across the image - they're all aligned and wotnot. Am i running into the issues of light pollution (inside the M25), which i can only remove with aggressive DBE application? Individual files attached.
Hi, I have taken mono LRGB images of M51 with my new ASI1600mm-PRO.
I have a mix of 30s, 60s, 120s subs. 100 darks, and 100 flats for each filter. About 4 hours total.
I Used DSS for alignment and stacking, then Pixinsight for LRGB combination.
My issue is that i'm not happy with the colours, the stars all appear white and the background is strange.
I have attached the Aligned LRGB images.
Can anyone point me in the right direction? Thanks!
Green.TIF red.TIF Lum.TIF B.TIF
Here's my first shot at M35. Primaluce 72ED, Astronomik CLS-CCD filter, ASI 178MC, Pixinsight. Only 20 lights of 30 sec. Biases & flats applied. There's definitely some weird things in there (a line of small red dots towards the bottom right hand corner, about an inch or so in from each edge). I don't think its a processing artefact, because it appears in the first integrated image. I tried to upload 16 bit darks but PI is again not letting me do that for some reason (but it does let me load 8 bit darks). I'm thinking it could be hot pixels (?) but wouldn't they be removed by the biases? I tried processing the lights with both 8 bit darks added, and no darks, and the image was better without the 8 bit darks. In both cases that little pattern is there. Does anybody have ideas where that's coming from (or has anyone experienced that before)?
(PS: that weird motif is best seen by zooming in on the image. And then you can see it appears in other parts of the image too. It seems to already be in the image after integration, but before any other processing is done. Is there such a thing as a stacking artefact - if so, how could I avoid that? Thank you!)