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Everything posted by riklaunim

  1. What's your main imaging telescope, what's the problem?
  2. Guiding/imaging works only with interlaced sensors, like in the original SX Lodestar. If your exposures are short so that single exposure isn't moved then you can try FireCapture selfguiding which looks at the captured frame and tries to keep the object in place.
  3. color balance needed, and some sharpening.
  4. I wonder in what way? SCT can be used and are used for DS astrophotography. This design is not ideal due to high focal length and moving primary window but it's usable. Newtonians are widely used for DS astrophotography from small to big. As for planetary - SCTs are handy due to their compact size, but when the aperture gets big SCT limits come into play. If you want more than 14" at a reasonable price - you pick a Newtonian (like many planetary astrophotographers did), and if you are using a C14 or even C11 active cooling may be a must to make this big closed OTA follow ambient temperature through the night. Damian Peach used C14 on Barbados, but also a Newtonian in UK. Emil, author of Autostakkert uses a big 16" Dobsonian on a wedge.
  5. Wrong. Both can do both. And also biggest planetary telescopes are Newtonians.
  6. You have some wrong informations. Newtonians are common for DS astrophotography. Mak or SCT may be related to planetary imaging, but Newtonians are also used for that too.
  7. I use such filter for planetary luminance channels, but with big apertures dispersion will still likely affect it.
  8. For some reason I never had "stability issues" with Ubuntu releases. And I don't like using old software for pseudo-stability.
  9. I works since long time, but still it's better to have the latest Ubuntu release for the latest software.
  10. I work daily on Linux, but for astrophotography I use Windows. The Linux alternative are either insufficient or none. Some Windows apps work through Wine, but still I want a stable platform as much as possible and best applications I want to use.
  11. Looks like Optolong filter set. In general their filters seems to be good, including the narrowband ones.
  12. There are some ASI178 DS images available on the web. It works, but keep in mind it small pixels - image scale it will give.
  13. 1. with C11, "works" 2. not worth it, either 1 or 3 3. Some OAGs are cheaper (Celestron old SCT OAG, some Baader and alike). Use OAG if 1 fails due to mirror flip/flop and alike. I used OAG with SCT for some time. It's very good for guiding but it may struggle to find any guide star.
  14. Moon likes infrared imaging. Solar usually also is filtered. DS imagin is also often filered - narrowband. That would preffer a mono camera.
  15. I have ASI178MM Cooled and it works. It all depends what you want it for, as those CMOS based cameras work differently than DS cameras with CCDs when it comes to DS imaging. For planetary imaging the cooling part isn't essential. You can check for example astrobin for images taken with those cameras.
  16. You would have to be imaging for quite a long time to realign the ADC. Usually is just setting it up on start and then imaging.
  17. I had C14 for some time for planetary imaging. It did work with all that resolution it can give, but without active cooling it got temperature lag quite quickly - even after an hour or less after being cooled with fans. In most nights it wasn't able to keep the ambient temperature. As a solution for this year I'll be getting a truss 14" telescope C14 isn't an "overkill" if you can make it work.
  18. C11 and C14. Before Barlow it's more aggresive than after it at f/20.
  19. ADC work rather ok at f/10 but if your telescope has less then definitely it has to be after a Barlow.
  20. Celestron Nightscape isn't the best camera available, based on old Kodak sensor with small color pixels. It would be better to use color QHY8L or mono new ZWO/QHY cooled CMOS based cameras. If you can get Nightscape really cheap and you have a short focal length telescopes or a lens - then it could be viable against a DSLR due to cooling. So it depends on the actual price vs competitors.
  21. It's rather not a problem as rarely one clip isn't recorded for longer than few minutes.
  22. For planetary imaging the bigger aperture will win. As it has relatively pixels - don't exceed around f/15.
  23. CCD for planetary imaging are pretty much dead as modern CMOS sensors are faster, more sensitive and less noisy than CCD. And often they are cheaper. And some are already using them for DS imaging. ASI174 has big pixels, mid sized sensor. As a mono camera it's good for Solar System imaging and in general DS imaging - however amp glow in ASI174 may make it harder (even cooled) to use for DS imaging. ASI178MM has much less amp glow, but the small pixels limit what can be used for DS imaging - usually lenses and short refractors, or for lucky imaging - fast bigger telescopes. DSLR, like d750 has vastly bigger sensor so in FOV calculators you will see a big difference. DSLR are better suited for classical DS imaging where as modern Solar System cameras seems to work better when capturing much more frames but recorded at much shorter exposure times. And for typical DS imaging, like with a DSLR you may end up with guiding, and that will require a guide camera - that also can be a planetary camera.
  24. Screen is 8-bit If the noise is very low and the signal is very strong then you would be able to take advantage from more than 8-bit capture format.
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