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About markarian

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  1. I think it's just another way of saying "processed". Literally all I do is take 3x180s images for each filter of an object (that exposure works for me), calibrate them with flats, darks, bias, stack the 3 images and that's it. I also update a couple of items in the FITS header that helps processing (FILTER and EXPTIME if it's not there - DATE-OBS should already be set). Upload to the HOYS server and go through a short amount of processing there. M
  2. Yes @markse68 is right. Just calibrated but stop before you start doing the stuff we astro-imagers like to do to make the images pretty I try and automate as much of the workflow as possible to make it easier and more consistent. I wrote an article about it on the HOYS website here: https://hoys.space/a-hoys-participant-perspective-4/ Basically use a script in SiriL that does all the processing if you put your data - lights, flats, bias, darks - in the right directories. 20s later the stacked and calibrated files pop out at the end. Hope it's useful. Mark (P)
  3. Really good - as usual. I've been doing HOYS for a few years now (almost at 500 observations uploaded) and I'm part of the HOYS coordinating group. If anyone would like to get into contributing to the project and needs any more info or help then I'm happy to provide more guidance. I think it's a fantastic project for amateurs to get involved with leading edge astronomical research and flows on naturally from our imaging activities. I'd got to the point where I wasn't satisfied with just taking "pretty pictures" anymore and wanted to move on to something else. There are also many ways
  4. I don't know if anyone's seen this but the HOYS project (Hunting Outbursting Young Stars) has got time on the Las Cumbres Observatory telescopes and is sharing it out with amateurs to work on the project. It's really aimed at people who wouldn't normally get involved because they don't have the right equipment, or people who might want to get involved in the project in the future. It's Citizen Science with a telescope. Anyway details are here: https://hoys.space/get-involved-in-research-into-star-and-planet-formation/ I've been contributing to the project for a few years now and
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    Talk by John I. Davies, Senior Researcher & Principium Editor, The Initiative for Interstellar Studies i4is Project Glowworm – near term low earth orbit demonstration of laser push technology Visitors are welcome at our meetings, but because of the popularity of our talks, visitors must register for a free ticket as visitor spaces are limited. Visitors can also leave after the main talk or are welcome to stay on for the rest of the meeting. Tickets will go live 1 month before the event. https://www.astronomyedinburgh.org/event/first-steps-to-interstellar-probes/ Also at
  6. until
    Talk by Dr Richard A. McCracken, Research Fellow Heriot-Watt University Institute of Photonics and Quantum Sciences The discovery of an planet orbiting a Sun-like star in 1995 sparked a quarter-century of research. In this talk we will look at how we hunt for exoplanets, some of the incredible systems observed so far, and what the future holds for this exciting field. Visitors are welcome at our meetings, but because of the popularity of our talks, visitors must register for a free ticket as visitor spaces are limited. Visitors can also leave after the main talk or are welcome to sta
  7. markarian

    Hello everyone

    Hi - also from Edinburgh. I'm a member of the Astronomical Society of Edinburgh and it's a good way to meet other astronomers and learn about astronomy. Next meeting is Friday 5th July and you'd be very welcome. https://www.astronomyedinburgh.org/event/charles-piazzi-smyth/ There are other members in Balerno too (at least 4 that I know of) and I'm not far away. Maybe see you there? Cheers Mark
  8. until
    Talk by Prof. Andrew Lawrence, Regius Professor of Astronomy at the Royal Observatory Edinburgh. Celebrating the 200th anniversary of Edinburgh’s forgotten astronomer Charles Piazzi Smyth. In 1856, Charles Piazzi Smyth, together with his scientist wife Jessie, and a crew of sailors and Spanish helpers, changed the way we do astronomy. They traveled to Tenerife, lived on the mountain in stone houses they built themselves, and made amazing measurements that proved that observations were much better – clearer, sharper, deeper – than from smoky cities like Edinburgh. Piazzi Smyth believed tha
  9. I find I still need one even though the RGB filters take some of the LP out. L definitely needs it. I just keep my IDAS P1 in front of everything. Don't know if that's correct or not but it seems to work for me. Without it my images fog too quickly. Mark
  10. This I took last night shows much better stars without the MPCC than with surprisingly. Even stars in the corners look pretty good.
  11. Definitely not going to use it - and it seems the 10 inch newt really doesn't need it. As Louise says - the sensor size probably means I gets away with it. In fact the MPCC was doing really weird things to the stars - even at the correct spacing. Not sure what was going on there. It worked fined for the 8 inch newt.
  12. Ahh didn't know that. Thanks Definitely a rat to me
  13. Never heard of it? Me neither - but after imaging the Christmas Tree Cluster NGC 2264 in narrowband it will forever be known as the Rat's Head Nebula - to me at least... Can you see it or is it just me? 250mm f4.8 Newtonian Atik 460EX Baader Ha, OIII, SII SHO colour mapping 10x300s each band
  14. Well I've finally decided that it is caused by the MPCC and the Baader filters together - even at the correct spacing there's still some effect. The really weird thing is that my images look far better without the MPCC. I only used it because it was necessary with my 8 inch Newtonian, but this 10 inch seems not to need it at all - and it certainly gets rid of the the horrible reflections / artifacts. Thanks again for everyone's help and suggestions. Mark
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