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pipnina

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Everything posted by pipnina

  1. I'm more than a little surprised a post I made five years ago has been referenced this week! Even I forgot I even made that one! Thanks for the memory trip and for the beautiful astrograph!
  2. Hmm. I did notice a little bit of softening at the furthest edges of my Nikon, but I presumed my coma corrector was not quite perfectly positioned. How have you gotten on with your ASI1600? I would be interested in imaging places like the flame nebula so I am very concerned by the reports of microlensing effects, have you noticed them prolifically in the images you've taken?
  3. I have been on the fence about diving into a proper astrocam for months now. I am at the limits of what is possible with my Nikon D3200. The prospect of the ASI 1600mm PRO and Atik Horizon's ability to do video and long exposure (i.e. multi-purpose planet and DSO imagers??) and their relatively good price point for the resolution and sensor size, is attractive, but I hear about micro-lensing and amp glow from these CMOS sensors, and possibly reports of unusual colour balance compared to the CCDs, and I start to wonder if I can justify spending £1500 on a camera which still has many flaws.
  4. My nikon isn't modded at all, and I have gotten this effect with refracting optics too. I have done some imaging with normal camera lenses in the past which showed this. I cannot however say what causes it.
  5. Hmm. I'm not sure a filter will help you since the light looks very white which would make filters useless (the whole spectrum is polluted). Because of the location of the lamp, would it be possible to connect a large sheet (like a water-proof blanket used for covering lawn furniture) to the house and fence to shade the scope?
  6. I think my flats were probably wrong somehow. I never seem to get them right but I don't know what I'm doing wrong. I don't get this pattern when I use no calibration frames.
  7. Nice report and I'm glad you got yo make use of the recent clear spell! That second photo makes me think of the year 1968 for some reason...
  8. Hello and welcome! It's best to convert finished images to jpeg or png so that it can be viewed more easily.
  9. I posted the result of my 4 hour data the other day, but as the conditions were good last night I figured returning to the same subject wouldn't hurt. Still got some issues in processing. Flats look like they're overcompensating though I kept the histogram within the recommended range and they appear to correct properly when used on a single raw image in rawtherapee. I'm pretty happy with this over all however.
  10. An excellent explanation! Kappa-sigma always gave me better results than the more plain methods in DSS, but I never knew what the settings were for. Thanks for taking the time to write that!
  11. So if I get this right, kappa=1 would throw away all but the most consistent 33% of pixel values? While kappa=3 would only throw away 0.27%? And if that's by 5 iterations, it throws away 0.27% five times? Does this mean, for purely hot pixel removal, it's best to use kappa=3 and iterations 2-5? Does low kappa severely limit benefits of stacking for "going deep" into images or preventing faint details from emerging?
  12. The good weather continues and so I recharged my camera's batteries and set sights for M81 and M82 last night. I hoped to get in the order of 6 or more hours of images from it but at some point the 130-PDS impacted the tripod leg and it lost tracking, then the camera battery ran out, so I got just over 4 hours in the end. I'm relatively happy with the result though, looks relatively clean and free of my camera's usual defects (I shifted the mount by a minute or so after 2 hours). I should probably look into investing in pixInsight to get pictures like this in a better state since I think editi
  13. Excellent! Thanks! I don't know what happened to my manual since the kitchen redo in January moved just about everything else in the house too ha. Thanks again and hope you're all well.
  14. It's very convenient that the handset can slew to catalogued targets automatically, but for a lot of pictures I'm trying to frame two objects at once. Is it possible to dial in a specific set of RA/DEC coordinates straight into the SynScan handset so I can reach the same location repeatably? I know people do it with the computers but I can't plug mine in (no adaptor)... I can't find anything in the menus of my HEQ5-PRO to do this with... Help!
  15. Had a few technical issues with the mount but I got it to a mostly satisfactory condition after an hour or two. Unfortunately i forgot to charge my double battery holder in my nikon so it only lasted about two hours into the imaging session and I had to cut it short Hope the rest of you are getting some luck with the sky at the moment. Summer fast approaches and I for one hope to make the most of galaxy season
  16. I think I've improved it... I got the "polaris position in scope" and the other stat it gives you after setting date/time/lat/long so I put polaris on the wrong side of the polar scope... Still, I didn't think it would make that big of a difference...
  17. I just set up my HEQ5 to catch some snaps while the weather is good. But despite double checking the balance of both axis and that the clutches are tight the scope still drifts noticably (can almost watch it!) in very little time. What possible other causes could there be? I'm fairly certain my polar alignment cant be that bad! At this rate I'll loose another night of imaging to equipment issues Any ideas to test welcome! Thanks!
  18. It seems I never updated my profile when I got the imaging setup earlier this year, I'll have to edit that! I have a HEQ5-PRO and a 130-PDS with Baader Mk3 coma corrector that I currently use for photography. My 250PX sits on a dob and I use that for visual, though I've tried to get a few sneaky planet photos through it.
  19. Hi guys! I am hoping to move into proper astrocam imaging this winter and have been looking at the different options available. The Atik Horizon and ZWO ASI 1600MM-pro have caught my eye due to having fair sized sensors for the price, but which makes more sense to use? They both seem to have the same size sensor with the same pixel size, though the ZWO is cheaper in mono form than the Atik. I have heard that ZWO equipment can also be operated wirelessly with another attachment, which could make adding a guiding cam even more convenient if I got a ZWO + ZWO? My current camera is an ol
  20. ALMA can have a 16KM diameter with its movable telescopes. Perhaps I'm misunderstanding something or this video has overlooked it?
  21. Guiding is definitely something I need to look into! Thanks for reminding me. I suppose I could leave the mount itself outside between nights with a cover. But it being soft ground I do wonder if it might be at risk of shifting over time (I don't have a good concrete space to put it), also the risk of theft while mild given my area and the setup location always lingers in the mind. But I'll definitely look into those covers! If there isn't a good dedicated system for remote telescope control, maybe I could use a Raspberry PI to control the whole setup (Guiding/Mount movement/Camera)
  22. I always like seeing the brown dust around this nebula! A wonderful photo.
  23. Hello! I've been gone for a while but now that the dark nights are upon us again I have been thinking more and more about my dusty astrophotography setup, especially since my coworkers recently saw my previous astro pics and wanted more! Sadly the weather over the last month has not been welcoming but I hope to become ready for the winter and spring ahead! Currently I have a fairly simple HEQ5-PRO, Nikon 3200, and 130-PDS. I have been thinking about possible upgrades to this which would make it either out right better or easier to setup, but I felt I should ask for ideas from the experts!
  24. My usual summer astro drought continues. In the last 4 months I've basically only had 1 look at Jupiter and Saturn.
    Sad, but the longer nights will come back soon and the garden is doing well in the mean time.

  25. Well, he already wants a tool shed. Maybe I can propose an "extension"
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