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Uranium235

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Everything posted by Uranium235

  1. I meant tweaking collimation slightly to get the corner stars perfect Three are acceptable, one is a bit "meh".
  2. Managed to get out for a few hours last night - though not the best conditions for LRGB imaging so I picked on something fairly easy. More a test of field flatness really, its close but needs a tweak I think. Taken using the QSI camera (LRGB).
  3. Guiding tonite!

  4. Yeah, same here - Ive got the long geoptik bar and a spare clamp I could rig up. I reckon a really good match for the redcat would be an atik 490. 3" p/p and a more than useable fov.
  5. Lol... I was thinking of shifting the samyang 135 (again), no doubt I will probably end up buying another in 12 months time Come to think of it - that qsi is a heavy lump of a camera, I would definitely need to sort out a longer dovetail for it to balance out correctly. But the winner for the redcat will be zero focuser slop - probably the single most common cause of a tilted field.
  6. One thought occurs though, with a large camera on the backend - its going to be quite camera heavy (much like the star71 was). So a longer dovetail or counterweight may be required.
  7. I'm in! Might have to flog something to raise part of the dosh though.
  8. Hmmm I wouldnt bin it per se. If you eventually get the Samyang, you could use the Tamron as a spare portrait lens. You could even aattach an EP to a camera lens and use it as a monocular...lol (if you have the right bits)
  9. Lol... isn't f4 asking for trouble? How often do you see perfect corners on a sub f5 newt? ? Maybe it would suit an experienced Imager, but probably not someone just starting out.
  10. Personally, I'd go with the 130pds every time, it will be much easier on your guiding and gives you a much more compact setup. The 200pds imo is too much of a handfull, and takes some tweaking to get if in the right place with a larger sensor. Plus it's quite restrictive in terms of what you can image. The 150... hmmm it's fl is just a little too long for me. The 130 is 650mm, which is a good spot. Oh, and in regard to guiding. The 50mm finderguider is the most cost effective. Plus it never fails to find a star.
  11. The way I set mine up is I have a little acer aspire netbook (win xp) running the imaging and guiding. Then use powerline networking to control it from the living room using a gaming spec pc (ryzen 5, m2 ssd, gtx1060) that makes short work of any processing or stacking jobs. The data transfer rates over powerline networking are excellent, way better than WiFi.
  12. The odd star shapes seem be down to the optics. You've described the lens as vintage which probably gives you a clue as to why (probably wont contain ED glass or have modern coatings). You could try stopping it down a bit further, trying some narrowband - or just cropping down to the FOV that looks the best.
  13. Your image gives a good indication of what the raw uncalibrated data looks like - especially that starbust amp glow in the bottom left. Thats why calibration (with darks at least) is mandatory with this camera. Once fully calibrated you will be able to make much better use of the data you have there. One word of caution, if you have yet to take darks - do it roughly the same ambient outside temperature at which your L frames were taken. Thats why with this camera (as the seasons progress) I periodically dedicate the last hour of each imaging session to taking fresh darks. Theyre short subs, so it doesnt take long to build a half-decent stack.
  14. Thanks Well theere is always the option of getting a 2nd mono camera so you've got all bases covered no matter what the moon phase is.
  15. Great sky out there tonight Shame ive had to pack up at a sensible time! Its been my first decent go at imaging something for a couple of months, maybe more. But glad I took the time to set up. I wanted a quick start so I went light with the ASI and f2 lens, which seemed to frame the whole thing quite nicely! Ive managed to calibrate out the amp glow, and for just 135mm focal length - the result turned out better than I had expected IC1805 50x240 (Ha) ASI 178MM Cool, Samyang 135mm @f2, NEQ6 Thanks for looking
  16. 2018 was a bit "meh" for me, too much non-astro stuff getting in the way - but I did get out just enough for this lot:
  17. Ok folks, its time for the 2018 showcase Please use this thread to showcase your best images captured during 2018. Just one post per member but you can include up to 5 images if you want. The thread is for all imagers, both novices and advanced. Please keep details to a minimum - scope and camera possibly along with a few comments. The thread needs to be packed with images so please don't respond to the postings 
  18. It depends on what you are selling I guess. Desirable gear will always find a buyer
  19. Just go with thte dew shield, no need for a secondary heater I made a my dewshield out of a small bucket (actually it was a from a small bucket of sweets, about 12 inches in height), where I'd cut the bottom off (which matched the aperture exactly) and then flocked the inside. It works perfectly and Ive never had an issue with fogging, not unless a load of mist rolls in and it starts "falling" (like rain) onto the primary mirror.... in which case you shouldnt really be out...lol. Just have a look around the house or shed, and try to spot things that might fit the aperture - there is always something you can use/modify to fit.
  20. The problems I can see with that are: 1) Using an f5 scope of a shorter focal length would mean less aperture - and therefore would require a smaller central obstruction and secondary mirror size - not a satisfactory result. Or 2) A faster focal ratio - which brings up a whole other bag of (perhaps worse) problems. Take a look at the Tak epsilon 130, and you will see the price of a fast widefield newt is rather high However, there is one cheap way around the issue... mosaics!
  21. First of last nights efforts, not the best night to be out (moon and dodgy sky) - I guess thats alright for just over 1hr per panel (x2): Taken with the QSI683 10x450 (L) x2
  22. Thanks yep, that's just one panel. Going short on the FL is probably the best way to make use of the pixel size on that camera.
  23. I've been sitting on this one for a couple of weeks, but cant see why I cant give it an airing not that I'd want to set up tonight, the air out there is just plain toxic at the moment (bonfire smoke with no wind to blow it away)... almost like a smog. Taken with the f2 Samyang and the ASI178MM Cool 60x300 (Ha) Thanks for looking!
  24. Nice, but probably not best to use the "U" word here, as it gets flagged for approval
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