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AbsolutelyN

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AbsolutelyN last won the day on October 3

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About AbsolutelyN

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    https://www.tristancampbell.co.uk/astrophotography

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    Harrogate
  1. We had a couple of hours of clear skies tonight though it soon clouded over. This time I tried just using the 3x barlow rather than the 5x. It gives a smaller but brighter image allowing much faster frame rates. 250pds with 178mm - 20% of 10,000 frames per filter.
  2. Seeing wasn't good here either though you'd get brief moments where it was reasonable - this was best of a batch of images taken over about 3 hours.
  3. Thanks. Nice to see there are others up here in Northern England ... so many seem to be down south
  4. The skies finally cleared briefly here for I think first time since opposition. Managed this quick image on what seems a rare gap in the weather at the moment. Best 20% of 5000 frames (per filter). 250pds and zwo 178mm.
  5. Thanks. Blue channel was complete mush, barely had a defined edge, green better and red best.
  6. Mars under not so good seeing very early this morning. Unfortunately blue channel in particular was impossible to get sharp but red was reasonable. 178MM with 250pds + 5x barlow.
  7. Brilliant, you captured a serious amount of detail here, excellent image.
  8. Wow, that's absolutely amazing. Thanks for all the info, on astrobin as well as here. I need a bigger scope
  9. I think it's the same sensor as the zwo 462mc. I don't think you can go too far wrong with it, very good camera.
  10. Thanks Craig. Only a couple of hours clear last night so was experimenting. The 462 is a very impressive camera, certainly feels a step up from the 224 in capture speed, it's an absolute speed demon in IR, had almost 200 frames per second. I also suspect the colour is more accurate from the colour camera but the mono gives an almost three dimensional feel in comparison which I really like, just more aesthetically pleasing to my eye. So I think I'm going to stick with the 178 for Mars for bit and push it as far as I can. Would have got a 290 but no stock anywhere and I like the wider field for lunar. I'm struggling with focus, very hard to see any difference with small focus changes so am guessing seeing just is not good enough.
  11. Great idea, didn't think of that. Will have a play later. Thanks
  12. Great image, some good details coming thorough. I'm finding that getting the image scale up gives better results with one shot colour cameras.
  13. The weather forecast was spot on tonight, clouded over on cue just before midnight. Managed a few images with both 462mc and 178mm but Mars was not as high in the sky as it could have been if it had stayed clear. From the data I got the 178MM easily wins for me personally. The 462mc attains far faster capture speeds. Had it at 220 frames per second compared to just 150 with red on the 178 dropping to just 60 for blue. In IR the 462 was easily more than 2.5x the frame rate of the 178 making the 462 superb for IR. The 462 had a slight yellow fringe at the edge. Not sure on the cause. It does however seem a lot more sensitive to blue than the 224mc. Both captured with 250pds, 5x explore scientific barlow at 6000mm. No derotation, all from 20% of 5000 frames. 178mm is 5000 per filter. 178MM IR-RGB (20% of 5000 frames per channel) 462MC RGB (single image 20% of 5000 frames) 462MC RGB derotated 5 images (20% of 25,000 frames) 462MC IR (single image 20% of 5000 frames) Final composite of IR-RGB https://www.astrobin.com/c3d30l/?nc=user
  14. I'm not sure if that's 600mm with the barlow or without. In any case I'd see if you can get a bit more magnification. An 80mm scope will be limited by its small aperture. This is a nice image showing roughly what you might expect from it with Jupiter. https://www.astrobin.com/241764/?nc=user I'm far from the best person on this forum to make suggestions as I've only done a bit of planetary but I'd suggest these points: Make sure your scope has been cooled outside for a while before you start Position it on grass and try not to observe when the planet is above a nearby roof where heat may be rising Try to ensure the planet is as high in the sky as possible so you're looking through less atmosphere Wait for good seeing with steady atmosphere Take your time focusing
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