Thank you

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Fixed today in GIT.

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Also make sure the mount is tracking before you start guiding. To know whether your mount is tracking or not, go to mount tab or open mount control panel, and check if the mount's RA/DE values are static or they change. If they change with time, then your mount is NOT tracking.

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Given you have access to the equipment, why don't you try to customize the driver to support this? If you have any issues with any development details, let me know!

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I found issue causing this. The position angle of the target displayed within the mosaic window wasn't 0 E of N and so the rotation wasn't correct. I have a temporary "fix" for this, but I'd like to work on a better approach and will work on it in the upcoming weeks. Thanks for the report!

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Hi! No personal experience, just hearsay from an experienced friend:
- unhardened, stainless steel
- bearings should be massive from my gut feeling
Yours wolfi

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For anyone following, I just raised a PR to add USB connectivity.
Feedback & testing welcome..
github.com/indilib/indi/pull/317

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The manual says it can be in Access Mode (aka hotspot) or you can join it to your WiFi network. So the IP depends on how you connect it. There is no information on the port used, you have to ask Celestron or find it from another source.

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Yes! I also tried to build an optical intensity interferometer but got stuck on timing issues.
Please allow some time to add at least some receiver, initially I'd add radio receiver, mostly due to transfer bottlenecks and timing limitations. After some radio receiver photon detectors could be added.
Regarding this project, it's a common dream for interferometry passionates I think, Hanbury Brown had this dream probably, and others still too. I think that LibINDI is the right place where to start. Somebody should start a thread here where to discuss about this, and RTL-SDR receiver could be of much help here, since of their versatility and wide range. If nobody will propose a driver for these I'll do it.
There is already a project named OpenVLBA , we'd have to contact the author and propose him to bring that project INDI compliant.
Ilias

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Thanks a lot.
Your previous reply was really helpful. I can use Python code for the simulation drivers.

Now I have some other issues.
How can I find the IP address and port of the mount? I checked the specifications and datasheet. It gives no clue about it.

The mount I am using came as a part of the following setup:

www.celestron.com/browse-shop/astronomy/.../nexstar-evolution-8

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Hi. I may be wrong here, but if you introduce a negative angle in the Mosaic job creator UI, in the "rotation" field under "1. Equipment", it is handled as positive, i. e. -33 is handled as +33.

The solver reports my rotation as -22 but this (see attachment 1) is what I got after running the mosaic job (quick composition with ds9 using wcs data from the resulting fits files). As you can see, the rotation of the individual frames is different from the whole mosaic. I am guessing that the problem comes from the mosaic job creator ignoring the negative angle.

Also, a couple of minor things.
- On the right, the display of the mosaic and the objects is a bit buggy. Ofter, it leaves out parts of the mosaic, the object, etc (see attachment 2).
- The "tab" order of the "rotation" field is wrong, it should come after "Pixel size - H" but comes after "overlap" in "FOV".

Thanks!

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The rationale to high time resolution comes from my understanding of photon interferometry. To the best of my knowledge it must be time bound. Indeed it gets critical in long distances so I might be wrong in expecting that much... Anyway thanks for the hints.

BTW. I believe that VLBI as a social/croud sourced project is great idea. I have considered it some time ago but do not have enough time to follow up on this.

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Ok so the three modes we want to have access to are

Position Mode: YMINUS, XMINUS (no slit, no grating)
View Slit Mode: YPLUS, XMINUS (slit, no grating)
Take Spectrum Mode: YPLUS, XPLUS (slit, grating)

In principle, "Position Mode" should include some kind of repeated image-taking, like a "focus" mode, but I think that's easy to have enabled anyway.

So is this something you could easily add, or something I should try to develop myself?

I very much appreciate your attention to this, by the way.

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