IMX455 based SBIG camera?

Discussion in 'Aluma AC Series CMOS' started by William Castleman, Jan 28, 2021.

  1. Doug

    Doug Staff Member

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    Yes, right now we're getting the firmware and drivers finalized. Trying to wring out any glitches.
     
  2. Mike Hambrick

    Mike Hambrick Cyanogen Customer

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    I have a couple questions while I am waiting for the new camera to be introduced:
    1. I am curious about the SPF plus Fiber Ethernet cable described in the Aluma AC455 datasheet. Is this just a standard ethernet cable with a RJ45 connection?
    2. I no longer see any filters offered on your website. Have you gotten completely out of the filter resale business?
    3. I am going to be getting a new laptop soon. My old laptop has a non-upgradeable Windows 10 operating system. Do you recommend that I replace my laptop before getting the camera? If so, do you have any specific recommendations for what features it should have?
    4. Regarding the laptop, do you have any particular recommendations for the type of I/O ports I should get? Should I also be looking for a hub with multiple USB and ethernet ports, and if so, can you recommend a specific brand and model?
    5. This question applies to MaxIm DL. I am assuming that my MaxIm DL 7 license will be transferrable over to a new laptop, but can I also transfer my MaxIm DL 6 license over?
    Mike
     
  3. Doug

    Doug Staff Member

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    1. It's fiber Ethernet, not copper. It's very well-established technology but not everyone is familiar with it. It's not complicated at all. Basically you need a fiber cable with connectors on each end, and transceiver modules for both end. These are all widely available, e.g. on Amazon. The details are in the user manual, and we can also provide them with the camera if you like. We do have some recommendations for the transceivers because it's important to have wide temperature range.
    2. Yes we've stopped selling filters. We had some quality problems with our supplier and decided to leave filters to our dealers going forward. We do have leftover inventory listed on our "Garage Sale" page https://diffractionlimited.com/product/filter-sale/
    3. You will want a decently powerful machine with lots of memory. A fast i5 machine can just about keep up with the full transfer speed. If you don't mind the download taking longer then a slower machine will work fine.
    4. A Thunderbolt port is recommended as there are fiber-to-Thunderbolt adapters available. Alternatively if you have a 10G copper Ethernet port then you can use a format converter to get to fiber (this will need to be dedicated to the camera - you probably use WiFi for internet anyway.) I haven't tried USB-to-Ethernet with a format converter to fiber... but I rather suspect it will be slow. USB3 isn't as fast as 10G Ethernet.
    5. Yes you can transfer the licenses to your new machine.
     
  4. Tim Povlick

    Tim Povlick Cyanogen Customer

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    A YouTube channel "ServeTheHome" has interesting reviews of small PCs and switches for 10GbE. One could go full out and setup 10Gb with WiFi-7 -OR- simply stay 1.0Gb and ignore the extra second to download. Be that as it may, getting rid of USB at the camera is huge.
     
  5. Doug

    Doug Staff Member

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    That was our thinking. We have so many issues with USB. Windows drivers are almost plug-and-play but then you get hit with dumb stuff like USB Selective Suspend. The USB chipset drivers aren't well-developed for Mac and Linux, leading to support issues on those platforms. High-speed devices with long cables sometimes don't play well with the front jack connectors on PCs because of the crappy internal cabling. Desktop USB hubs don't work right in the cold, which manifests as reliability issues. etc. etc.

    Ethernet is industry standard, robust, and well-supported on all platforms.
     
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  6. mike m benjamin

    mike m benjamin Cyanogen Customer

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    I see you have officially launched the IMX455 based Aluma (finally!) I see a small mistake, you have the release showing the chip is 41x31mm.
     
  7. Colin Haig

    Colin Haig Staff Member

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    That's the chip size. I've fixed the webpage and we'll fix the sentence on the front of the spec sheet.
    The usable pixels work out to about 36 x 24 mm as you mention, and the pixels are 3.76um square.

    The actuals including overscan/reference pixels are approximately as follows:
    Total: 9602 x 6498 = 36.103 x 24.432mm = ~62.39 M pixels
    Effective: 9576 x 6388 = 36.005 x 24.019mm = ~ 61.17 M pixels
    Active: 9568 x 6380 = 35.975mm x 23.988 = ~ 61.04 M pixels
    Chip size 40.961 mm x 31.108 mm

    So yes, about the same size as the SBIG STXL-11002 or the size of a 35mm film frame, 43.3mm diagonal.
     
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  8. Martin Pugh

    Martin Pugh Cyanogen Customer

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    why is this branded an SBIG camera?
     
  9. Colin Haig

    Colin Haig Staff Member

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    All of our cameras since 2014 are SBIG(R) cameras. We acquired SBIG a decade ago, and honour the Santa Barbara Instrument Group name with the SBIG brand. For example:
    SBIG Aluma CCD47-10
    SBIG StarChaser SC-4
    SBIG Aluma AC455
    Thanks for asking.
     
  10. Eric Africa

    Eric Africa Cyanogen Customer

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    Are native drivers available for this camera and related accessories? Specifically, can we operate this camera and accessories using TheSkyX without ASCOM?

    Unrelated question: are cooled guiders (StarChaser series or otherwise) available?

    Thanks!
     
  11. Colin Haig

    Colin Haig Staff Member

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    DL Imaging drivers are the native drivers.
    Our ASCOM drivers sit on top of the DL Imaging drivers.

    Do you mean does the camera include proprietary X2 drivers specific to Software Bisque, and on which operating system, and for use with TheSky X (32 bit or 64-bit) Camera Add On??

    We have a number of observatories using our STC-428 and Aluma CCD47-10 cooled camera specifically for guiding.

    The relatively large pixel size of the 428 makes it an excellent match for many scopes > 14 inch, or for use with on-axis guiding and a dichroic (beam splitter) setup.
    https://diffractionlimited.com/product/sbig-stc-428-m/
    We've also done a modified version of that with a water block, fanless cooling system.

    The Keck Planet Finder uses our Aluma CCD47-10: https://diffractionlimited.com/product/sbig-aluma-47-ccd10/

    What is it you need? Happy to discuss options.
     
  12. Eric Africa

    Eric Africa Cyanogen Customer

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    >>Do you mean does the camera include proprietary X2 drivers specific to Software Bisque, and on which operating system, and for use with TheSky X (32 bit or 64-bit) Camera Add On??

    Yes. Specifically, would it be possible to operate the camera and its accessories using X2 drivers within TheSkyX, with no ASCOM on Windows 10/11?

    >>We have a number of observatories using our STC-428 and Aluma CCD47-10 cooled camera specifically for guiding.

    Thank you for that information. That's good to know.

    Eric
     
  13. Martin Pugh

    Martin Pugh Cyanogen Customer

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    You do not specify the backfocus of this camera….what is the total bf consumed including the AFW10.?
     
  14. Colin Haig

    Colin Haig Staff Member

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  15. Mike Hambrick

    Mike Hambrick Cyanogen Customer

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    Is there a dimensional drawing for the camera body? I don't see one in the manual.

    Mike
     
  16. Doug

    Doug Staff Member

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    Here you go:

    455.png
     
  17. Dylan

    Dylan Standard User

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    Hey guys,

    Thing 1:
    Excellent work with the manual on this one. Haven't personally gotten to experience the device yet, but likely will be in the near future. On both notes...

    The manual states the following:

    "NOTE: The Trigger In and Trigger Out functions are accessed via this
    connector. The functions must be configured in the MaxIm LT application
    software when you set up the camera."

    Unless I missed something somewhere else in the manual, it sounds like the only way to utilize the trigger functionality is through the use of Maxim DL.

    I was hoping that the camera would just start capture per the presets configured in Ascom, whenever it had an active connection to the computer and received a 5V pulse on the Trigger In pin.

    Also
    Thing 2:
    SFP+ connectors, got it makes sense. Wondering if SFP (sans the +) would be sufficient for full framerate at 1x1 binning without delay. I have searched high and low to find an SFP+ connector capable of operating at industrial temperature ranges (below freezing is my biggest issue atm), but have not had any luck finding one that is TAA compliant.

    I REALLY like that you guys made the jump to ethernet based connectivity instead of camlink or usb3.0, or thunderbolt (which I have no gripes with for many other applications).

    Thoughts?

    Thanks,

    Dylan
     
    Last edited: Feb 23, 2025
  18. Colin Haig

    Colin Haig Staff Member

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    The advice in the manual is to help users get started.
    If you were to use ASCOM, you would need to enable the External Trigger option in the Properties, like this (circled in green):
    AC455externaltrigger.png

    Unless I'm misunderstanding you, the camera has to be configured for external trigger in the Properties settings.
    Then it is command to do an exposure by software, and the camera will wait for the trigger to commence exposure as soon as it rolls to the beginning row of the sensor. (Keep in mind it is a rolling shutter device). Then it executes the exposure, completes, and the usual download would begin.
    The camera does not continuously push images at the software; the software is the boss.

    A single SFP+ 10gigabit connection is excellent for most applications; however, if you truly need what you describe (eg for an SDA application or "full chip continuous imaging" at maximum performance), a single transceiver is not sufficient. We designed in a physical location for a second transceiver. If you want to discuss further, let's schedule a call during the week.

    Thanks. Many of our CCD cameras had Ethernet as an option; however these large Sony sensors demand it for speed. Optical fiber is really the only way to go for distance which is also something people kept asking for.
     
  19. Dylan

    Dylan Standard User

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    Ethernet - SFP+, happy you’re doing things in this form, sorry for mixing terms.

    A call would be super helpful. My schedule's a mess this week, but please let me know what day/time works best and we'll go from there. If you could shoot me a PM or direct email we could coordinate further.

    Thanks!
     
  20. Mike Hambrick

    Mike Hambrick Cyanogen Customer

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    Thanks for the comments, Dylan

    Like you, I have not yet had a chance to try out mu new AC455 camera. I need to get a new laptop, and for some reason I just keep putting it off.

    Mike
     

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