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After seeing this thread from Grinde, I'm not sure I should be posting this... I was quite happy till I saw his I borrowed a PST from Jon to use during the transit. I didn't get to use it then, but I woke to blue skies and just had to have a go. I'm still working through 16Gb of AVI's that I took but here is a couple of images that I've processed. The whole disc (well mostly whole) was taken with the DMK with the lens cell of a 2x barlow screwed into 1.25" adapter - giving around 1.5ish increase. It also meant that I could reach focus without any butchering of stuff. As you can see this is a mosaic of around8 or 9 panes. I do have the bit for the middle but it was very poor quality and actually makes the image worse when it's added. I'm annoyed about the limb missing though... more care next time. Also the joins are clearly visible, so again lots to learn and to try and put right for next time. I've added the Earth to give a sense of scale. The next image is same set up but this time I've removed the 2x barlow cell and added in the 2.5 Televue powermate. This was again around 2000 frames with about 1000 used in the stack. Both images have been made "colour" in PSCS5 along with a little play with curves. A slightly larger Earth is again added for scale. Hope you like? Ant
I have a second (used) PST on its way to me, so before I get to the typical mods like replacing the objective, I was wondering if there was anything useful I can try with two PSTs first? The thought occurs, could I extract the etalon from the 2nd one and add it to the 1st? Double stack on the cheap. I'm not 100% sure on the threads but could it screw in series with the existing one? But would the positioning in the optical train be thrown out enough to make this unworkable? I'm not sure how much tolerance I have to work with here...