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riklaunim

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Everything posted by riklaunim

  1. Dark current higher for CMOS in 2016? Are we talking about the same chips?
  2. FireCapture also has a debayer app. It also lets you pick an algorithm so you can check which is best for given clip
  3. Intel based tablets running Windows are usually bound to run it as Linux does not support tablet displays as the interface is usually non-standard. As for booting Linux - using Ubuntu or it direct derivative is the best option as it AFAIK can run with Secure Boot and other UEFI shenanigans, but you may still need help with making a special bootable image with Rufus if the UEFI still makes problems (64 bit CPU having 32 bit UEFI which wasn't widely supported by Linux distributions not so long ago, now it's said some do support that). If tablet display is supported by Linux then either 32 or 64 bit version should run, as the CPU is 64 bit.
  4. New laptops are only Windows 10. I'm using it from a while and it just works.
  5. There are no non-Windows alternative to FireCapture - in terms of usability, features and UI (there are other recording apps, but they always lack something). There are no non-Windows alternative to Nebulosity in terms of ease of capture and full processing capabilities (there are some DS imaging apps but still they lack something or the whole processing side). Only PHD has a Linux native version. And distributing any task among multiple computers isn't an easy task to do to be efficient. And the software must be written for it in mind. So no, I don't see a point in enforcing people to using a ARM single board computer running ARM based Linux that wasn't even meant to be used as a consumer device by non-techology and non-linux aware users.
  6. Many amateur observatories or backyard setups have remote control with remote desktop on a PC that is next to the setup. And in this case picking Raspberry Pi isn't a good option - what's the reason to loose all Windows astro-applications and loose proper USB and Ethernet/WiFi support with full bandwidth ? There is a lot of nettops that can do the job and are cheap.
  7. Then install Linux on it. There are many nettop barebones that' don't come with any OS. I use Linux daily for work and everything. But astrophotography and some gaming is on Windows. Good software saved a lot of time and I won't trade it for less versatile and polished Linux counterparts (if available at all).
  8. Even cooled need darks as cooling doesn't cancel dark current or presence of warm/hot pixles, uneven columns/rows and so on depending on sensor vendor and design. Cooled cameras use set-point cooling so you can take darks easily as the temperature is set to a fixed value.
  9. USB3 camera connected with other devices to USB2 with limited throughput on "old" ARM board is asking for trouble And you loose Windows apps. If you really want something small you can get a "stick" PC or nettop with Intel/AMD x86 CPU capable of running Windows or Linux and with USB3 and 2.
  10. Silicon imaging sensors are sensitive to UV and IR. They don't convert it to "visible", they just see it.
  11. 12 isn't needed much for guiding or planetary, cooling for guiding or planetary imaging isn't a priority either. 8-bit only camera may hint that either is done "simple" or the noise is so high that it only can do 8-bit Old QHY5 did have some noise, a lot when compared to modern cameras.
  12. Old QHY5 cameras (not QHY5-II series) aren't that good for planetary imaging - some don't even have short enough exposures. And the software + sensor is old. In this price only color ASI034 and QHY5R-II fit. Mono ASI120/QHY5L-II barely on a sale or used and Altair GPCam can be cheaper.
  13. You can report the bug to the OpenPHD team/repository https://github.com/OpenPHDGuiding/phd2
  14. For mono is also useful. Low planet position will give dispersion even on RGB filters. Also with ADC you can use L and other broad filters to get good luminance channel - something you don't do normally with a mono camera.
  15. A true workshop The key question - can you get longer exposures? Or if not - how guide app will behave with a guide scope and some faint stars?
  16. It's only a planetary/lunar camera. For that price I would consider ASI034 or QHY5R-II cameras - as those are proven and what's more important - supported by good capture applications - FireCapture / SharpCap. Those cameras will however require a USB connection with a laptop (or some Windows tablets). And don't expect to much. Pretty astrophotography is quite expensive and takes "a lot" of processing time to get the final image. Buy after you check what can be achieved with given hardware.
  17. But it's not in analogue CCTV camera boards. So what that another sensor is in a non-analogue camera? Most if not all of those Sony CCDs were meant for monitoring and machine vision applications. What you bought is "low quality" as the amount of control it has is very very low. It could be even KAF 8300 - it will be bad if you can't control it as needed. To use it as a guider: One - control options - the board may not have it, second - frame grabber must be "compatible" with PHD or other guide app (via WDM or other generic interface), and three - those CCTV cameras don't do long exposures but (some) do live stacking or so called integration. Samsung SCV 2000/4000 has some image boost of that type, while few Watec cameras have very strong integration (and are popular in video astronomy and alike). The difference is they cost more and more - the more control and features they give to the user. So - be careful when assessing features of very cheap analogue cameras
  18. I did play with a tablet for astronomy: http://www.rkblog.rk.edu.pl/w/p/astrophotography-teclast-x80h-tablet-running-windows-81-classical-x86_64-intel-cpu/ The best one would be with separate USB OTG and charge connectors. Even better would be with USB3 OTG instead of USB2 OTG.
  19. Well, there are few things: - it doesn't have 100% QE - that's a relative, not absolute chart - it's a CCTV camera and those offer only short, sub-second exposures - 1/50 sec max - so way to short. - You would need a CCTV USB frame grabber to connect such camera to a PC. - Those boards are cheap because it's a basic, cheap and mass made sensor -> you get what you paid for. - Sticking to the standard PAL/NTSC formats the pixel count will be low and thus small sensor with small field of view (not very handy for DS imaging).
  20. Well, ASI120 is a planetary camera, not a DS Camera. It can also work as a guide camera (you will need guiding for DS Imaging).
  21. Full set isn't cheap and you don't have to buy everything at once. I did many shots with Atik 314L+ and CLS-CCD filter (that limits light pollution). There are also new CMOS based cameras (like cooled ZWO and QHY cameras) that also can be used for DS imaging and can be easier to use as they perform better when taking shorter exposures (and more frames). As for software - for DS imaging I use Nebulosity. Artemis app should work too For guiding PHD.
  22. Just try it. I had no problems guiding C11 with a finder-guidescope.
  23. It would be odd that pi user isn't in users group. Don't do anything you shouldn't do. What you should do is read the readme file: For PlanetaryImager compilation and requirements are given on https://github.com/GuLinux/PlanetaryImager but there is also Ubuntu Raspberry Pi binary package on http://blog.gulinux.net/en/planetary-imager
  24. As those are still relatively new on the market. And in some cases the deals for sensors are occasional - either one time or constant unexpected source of sensors may show up and you can make a batch of cameras. Making ASI1600 from a mono variant of a DSLR sensor isn't something you will find in a catalogue. Also those companies aren't used to release a new camera every half a year or acknowledge that 1-2 years old camera-sensor becomes pretty much obsolete if a better sensor comes out within the same or lower price point. New Atik 314L+ can still sell easily, while like CCD based planetary cameras of the shelf are pointless to buy, and even IMX174 based cameras can be questionable purchase today (while being like super hot year ago). SBIG was so Kodak oriented that they made a "planetary" camera based on some old and bad Kodak chip (which also wasn't cheap) - SBIG ST-i. Atik made Titan but it wasn't a planetary camera but yet another 16 bit Atik DS camera with a Sony CCD, that was pretty much obsolete for planetary imaging already at launch. Making quickly evolving CMOS based camera lineup for such companies is something they aren't familiar with, an may be even against their DNA forged through all those years. There is more liability for those companies as they have established reputation and don't really want to release a risky new product. With time something will change though.
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