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tomato

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tomato last won the day on August 13 2023

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    Shropshire

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  1. That’s interesting, my experience has been the opposite, ie all the dust motes that show up on the image reside on the sensor window rather than further up the optical train. My evidence for this is that flats taken with LRGB filters all show the same dust pattern.
  2. I stayed out for 4 hours last night hoping a cloud front would clear so I could capture some new data, but no luck, so here is a combination of some existing Esprit 150/ASI178/IMX571 data, just to keep my hand in. 8.68 hrs combining the data in APP then further processing in PI and AP. The main aim was to preserve the dust detail in the core which I think is OK, but the fainter outer reaches have suffered accordingly.
  3. Nice M101. I prefer the second image, the fainter spiral arms are much more distinct.
  4. Is this OSC data or separate LRGB channels? If it’s the latter, do the separate R,G and B stacks look OK?
  5. Any scope that’s located somewhere that gets 200+ clear nights a year. I’m working on it…
  6. You have done a great job, but I share your frustration on the lack of new imaging opportunities. You can only revisit old data so many times.
  7. The view on the imbedded link above is a bit misleading, as it isn’t from a Seestar, that video is higher up the thread, and somewhat less impressive.
  8. tomato

    M51

    Very nice, I love the detail and subtle colours.
  9. Fabulous image, glad to see it entered into the Deep Sky Survey competition. It’s inspired me to change cameras and have a go at something similar, assuming I can get a clear night and and the dome operational.
  10. Great images, the Ha regions in the spiral arms are spectacular.
  11. My Pulsar dome is currently powered by a 14 month old 12V 13Ahr Lead acid gel battery. The most recent imaging session aborted due to low battery volts after about 4 hrs, this is a safety feature to ensure there is always enough power left to safely close the shutter. @Tomatobro put it on test with a 1.9 amp current drawand here is the result: So I have finally embraced 21st century battery technology and ordered an equivalent LiFePO4 battery, inc charger. Over double the price of the LA variety so it looks like the scarcity of UK clear sky is now pushing up other indirect costs of imaging.
  12. Yup, the RASA(s), have done a fine job. It is indeed pleasantly surprising how much of a close crop these RASA8/IMX571 OSC will take.
  13. I do find that some tilt adjustments are needed every time the camera goes on the lens, but the camera support facilitates this operation. I wish it was as easy to adjust tilt on my RASA8 set up.
  14. I’m sure @Tomatobro will supply details but basically a m42 male adapter is screwed to end of the existing Sony lens adapter, as in the photo. As emphasised previously, this thin, plastic adapter is attached to the lens body by three small screws, and will not take the weight of an Astro camera alone, some form of additional camera support is required.
  15. You beat me to it Michael. I was about to ask where is the pinion for that rather impressive circular rack? Looks like a product of AI design software, got the flavour but no engineering principles evident.
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