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jjosefsen

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About jjosefsen

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  1. Hi, I doubt this is vignetting, your images should be getting darker not brighter around the edges. Try calibrating without flats, does your issue persist? I'm going to guess that they are - because I have the same problems with the same camera. It seems to be in the dark frame calibration and for me it is only a problem with broadband filters.. But I would love to see what happens if you try to calibrate without flats and compare, and without darks and compare.
  2. Hi, I am shooting LDN 1235 at the moment, and I was considering just doing R,G,B and forgoing luminance and just creating a synthetic luminance from the R,G,B subs later. I've done similar things before with pretty good results: https://www.astrobin.com/full/412663/B/?nc=user I really want to catch the faint colors of the reflection nebulae and the brown dust in this object, and was thinking that going really deep on all the color channels would do that, and possibly not missing much as it doesn't appear there is too much fine contrasty detail to be had.. Opinions would be very welcome. :)
  3. Good lord that is something else!
  4. I am a fan of Musk and SpaceX normally, but not when it comes to this. However if SpaceX weren't first, it would just be someone else... At least SpaceX seem to be willing to do "something" to alleviate the problems associated with the reflectiveness of the satellites. The real problem is that there are no global regulation on this...
  5. Woah that's an impressive image! The amount of detail is mesmerizing!
  6. Sorry to barge in here on this old thread. But I thought it was worth mentioning that V1.10 of NINA (https://nighttime-imaging.eu/) has a "file camera" function. It basically just means that you can use cameras that are not supported by an SDK which enables it to be used directly in astro software, almost as if it was connected. It just requires that you can trigger exposures through some other utility or intervalometer and automatically move the files from the camera to a folder on the pc. The gain is that you can use autofocus, platesolving, auto stretching, inspect images and statistics, dithering, etc.. Thought it was worth mentioning.
  7. I would suspect seeing as well. Had the same experience on Sunday night. Went from clear spiral arms on the galaxy I was imaging, to only being able to see the core. Mean ADU had also risen almost 1500.. Stars were still visible but it was like a faint veil had been pulled over..
  8. Hi Ash, You could have a look on http://www.worldwidetelescope.org/ To take a tour around not only our solar system, but also many deepsky objects. I can also suggest you visit https://www.planetary.org/ There are many great articles and blogs about planetary astronomy in particular, their podcast "Planetary Radio" is also well worth a listen.
  9. I think this is only applied if the capture software has added a piedestal and written the value in the fits headers of the files.. I believe I read it in a description of the new wbpp script online somewhere, but can't find the source now.
  10. Yeah i don't think you need to be worried either. It's a good little scope (I have one) but the focuser is the worst part. Expect to fine-tune this part a bit. I have since upgraded mine to this one: https://www.firstlightoptics.com/skywatcher-focusers/dual-speed-2-crayford-focuser-for-sky-watcher-refractors.html It is much heftier, and smoother. It also required me to fine-tune it a little bit though and the rotation is not great as you can upset the collimation when you do it.
  11. N.I.N.A. has syncronized dithering (experimental feature, but as far as I know it works) if you aren't married to SGP. Haven't used it myself as I don't have a dual rig (yet!).
  12. Apologies if this is hijacking, but I find it is sort of related. Does anyone know of a program that can platesolve and anotate stars up to and including mag19? I can't seem to find reference to more than mag 17.
  13. Yeah that might be where I eventually end up down the road as well (in many years when I can afford it), but I would feel bad about putting an EQ6 and a couple of cheapo fracs into a place like that.
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