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ChrisLX200

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ChrisLX200 last won the day on November 27 2016

ChrisLX200 had the most liked content!

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About ChrisLX200

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    White Dwarf

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    http://www.astrobin.com/users/ChrisLX200/

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    Macclesfield

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  1. I may be able to help - send me a PM ChrisH
  2. ChrisLX200

    M90

    Excellent M90, and you're right - not often seen ChrisH
  3. Perhaps I read it too simply - but the further away from the Pole you are imaging then the greater the apparent movement will be over time and hence increased potential for drift (tracking error) to show up on your sensor. Also, if your OTA is not orthogonal then this should show up during a modelling run after the meridian flip, pointing errors on one side of the mount will differ (be offset) from the other side and you'll end up with 22 modelling terms instead of 11 (the mount has detected there is a difference between East and West sides of the pier and modelled each separately). I alw
  4. I've always left dual-tracking enabled and not seen a problem, I also always use the maximum number of points available (97+3) well spread across my visible sky to generate the model. I had noticed a couple of years ago when testing various models that an apparent lower RMS may be obtained using fewer sample points but the better performance was to be had with the most complex model - so even though your RMS may be slightly higher using more points the resultant model is probably more realistic. With the refractor I get around 3 arcsec (best 2.5), my ODK12 is usually double that but still usab
  5. The supprise to me was that, thanks to seeing your image, it might be real data rather than an artifact I needed to get rid of This is not a dark site I image from (the main reason I stick to narrow band normally) so I would not have attempted to target such a faint wide-band feature on purpose. Just goes to show there are still new things to be captured from your average back yard though! ChrisH
  6. It's good to see this! I was struggling with background noise with the Lum channel on the centre part of this area so I reprocessed to enhance the faint stuff. The structures I see are similar to those you show so it must be IFN - real rather than artifacts Doesn't help with the colour channels though - adding those makes a right mess with this degree of stretch. So this is just my Lum channel to show those faint filaments are in the same place (relatively). ChrisH
  7. Dunno about fish - looks a lot more like a pteradactyl than a seagull to me though ChrisH
  8. I like that - almost makes me want a OSC camera because every time I've done a comet with a mono camera it's never turned out well You seem to have a few red spots though! ChrisH
  9. Thanks, and yes - worst season I can remember! ChrisH
  10. Well what a dreadfull season it's been for astrophotography! It's been weeks since I last managed a decent session. This is my first (new) image for ages - a wide-field Seagull Neb in HST palette. 11.5 hrs total integration (started in January!). Full res here should you be inclined to lokk http://s970.photobucket.com/user/ChrisLX200/media/Astro - Images G4-16000/ic2177 HST 005_zpsjgqsqtkf.jpg.html ChrisH
  11. I also get some reflections around the edge but it's not too distracting. This vid is last Friday's RGB disaster, I'm hoping for better tonight - if not I'm giving up on RGB from here! ChrisH
  12. Good result Gina, you obviously have a darker sky than I do - Milky Way very obvious in your capture! I tend to use 8sec exposures with this Fujinon lens and that's good enough to show the quality of the seeing - I'm just processing last Fridays imaging run which was ruined by high Cirrus, the camera showed the potential problem well enough but I stupidly ignored it and went for RGB on M42. Captured data was useless sadly. I'll post the animation when it's uploaded to YouTube. I tend not to use a Dome with this lens as it seems to be sensitive to reflections and distortions, so I just pus
  13. You're right Sara, the Ha makes for a poor Lum channel on M42 if used alone - the Running Man certainly is unrecognisable as can be seen in my current effort: http://i970.photobucket.com/albums/ae183/ChrisLX200/Astro - Images G4-16000/HDR ST PI PS_zpsicy3s8t1.jpg~original However, it does appear to add something when layered on top, in desperation I nicked your LRGB data to play with! (I won't post the result though...) ChrisH
  14. Brilliant Sara, could never be bored with an image like that. I'm jealous because you also have exactly what I've been trying to get should this cloud ever go away.. excellent RGB data! ChrisH
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