Ronald Scotti replied to the topic 'Camera rotation to compose image and/of find guide star' in the forum. 3 weeks ago

Fortunately, "in the field" for me means out the garage and down the driveway; so I always use Ethernet to connect from the house and have access to the internet. I will have to practice with the FOV symbols and their orientation to really understand how to best use them, but as I mentioned earlier - it has to STOP RAINING first!

thanks,
Ron

Read More...

Ronald Scotti replied to the topic 'Camera rotation to compose image and/of find guide star' in the forum. 3 weeks ago

As Ihoujin pointed out in his Bug thread, turning on the DSS option in the HiPS Overlay really helps. I probably would not have found the HiPS Overlay if he had not mentioned it. I can easily rotate the custom FOV symbols (as already pointed out) and that does help in framing an image in my sensor. The Sensor FOV, that you can toggle on and off on the right hand side of the toolbar panel, is the one that I thought might be rotated by the WCS setting (after all there is an option to 'set' that rotation angle in the Indi control panel). But no matter, once I slew to a target and establish what the current orientation of the camera is I can use the Custom FOV symbol (toggled on the left side of the toolbar panel) to rotate it for framing or finding a guide star, note the angle and then rotate the camera assembly accordingly. Another plate solve will show how close I am to the desired orientation.

The internal plate solver, with the source extractor, as been working pretty well; even with my narrow FOV setting (26 x 20) for this current setup.

thanks again,
Ron

Read More...

ok, that may be. All I know is that there are a couple of symbols. One is the image of the plate solve, the other is supposed to be the FOV of the CCD. Obviously, the first one matches the plate solve, but the second (the one you can click on and off) should (by my thinking) follow what you set for the CCD. Otherwise, what is the reason for being able to set the rotation angle in the WCS setting of the CCD?

It is fine, I can work with what we have. I understand a lot more now, that is all that matters to me. The Kstars skychart does not really provide much information for 'composing' an image based on CCD rotation anyway. And for finding a guide star I have to rotate and look for one.

It is all good, I just needed to know how things were working.

thanks
Ron

Read More...

ok, I am back and I am having trouble repeating your first step. I have set up simulations for telescope, guide, filter, ccd and astrometry and started Ekos with all things connected. I have the simulators set to represent my current setup with my 9.25SCT at f/10 and my SBIG camera. I have saved those configurations and reload them when I start up. I am able to move the telescope to various targets (m101, m90, m54, etc) and successfully solve using the internal solver (with Source Extractor or not).

After starting Ekos I can see the sensor FOV symbol on the sky chart and it is pointing at the NCP. the angle in the CCD simulator configuration and in the WCS pages both (in the Indi control panel) show '0' and the FOV symbol is pointing at the NCP. I now set the angle in the CCD Simulator configuration page to 25 degrees; save that configuration and exit everything. After starting up again, the angle in the CCD simulator page in the configuration tab at rotation says 25 degrees. But the FOV symbol on the Kstars sky chart is still pointing at the NCP. I cannot seem to get anything to change the angle on the Kstars chart.
If I do a solve and it comes up with a different angle, (usually 90 or -180 or close to those) then the solved field image on the skychart is in that orientation and the FOV Symbol is also. But it does not change by my making any other changes to the configuration setting of the CCD simulator.

There seems to be to be a total disconnect there. I will re-read this thread a third time to see if I am still misinterpreting what that rotation angle (in the Indi control panel configuration pages) means, but what ever it is it does not seem to be reflected in the skychart.

Ron

Read More...

Ronald Scotti replied to the topic 'Camera rotation to compose image and/of find guide star' in the forum. 3 weeks ago

Yes, I will have to come up with some strategy for finding the right orientation so there is a decent guide star in the guider FOV. But right now it has to STOP RAINING!! Almost another week of rain predicted, we had nearly 18" in May, here in Eastern NC.

thanks,
Ron

Read More...

Ronald Scotti replied to the topic 'Camera rotation to compose image and/of find guide star' in the forum. 3 weeks ago

Thank you for responding here. Yes, I understand that is a transformation I can make on the custom FOV symbol. I will post to the wish list the capability to rotate the camera/guide camera combination about the center of the guide camera offset, but it certainly is not critical. I would like to know where the finder FOV is relative to the main camera to see if I expect to find a guide star. But in practice it seems that may not be to useful; as I will first have to actually slew to a target (it does not seem that there is a way to predetermine what orientation the camera will take at the target before you actually slew there - at least I will have to think about that or at least pay attention to camera orientation after slewing to understand that). Once actually there I can look to see if there is a guide star (which then means I do not need to re-calibrate guiding - so that will be the first choice). If not then I will rotate the camera system until I find a guide star, (refocus if necessary), re-calibrate guiding (here it seems Phd2 has an advantage because with it you can erase the old calibration data and tell it to re-calibrate; I believe with the internal guider I would have to turn on the option to re-calibrate after every slew in order to do that and I really don't want to re-calibrate after every slew - if there is a way to just tell the internal guider to re-calibrate 'now' that would be useful).

thanks again for helping me understand some of these intricacies of the program.

Ron

Read More...

Ok, no problem.

thanks,
Ron

Read More...

I had been looking all over for a telescope simulator not expecting to find it under 'other,' I thought it should be at a higher level like the other scope (small point now that I know where it is).
Yes, I misunderstood what you said earlier, I thought you were complaining that the angle was off by a fixed amount, not that it did not show up at all.
Yes, what I did first was to create a new FOV simulator for both my main camera and the guider, I just missed the lower part of the box where you can put in an offset (trying to go to fast and end up behind where I started!). But there is an issue there as well. If you put in an offset for the guide camera and then rotate it, it rotates about its center not from the center point of the offset (where the main camera is).

As I am only working with ccd simulators, at the moment, I don't know how the 'real' system behaves. If the solver gives the correct angle of the sensor, then hopefully one could at least set that angle in the sensor configuration (or the WCS setting box) and the sensor FOV image on the Kstars screen would be correct. But that does not seem to be the case with the simulator. As I mentioned above setting the rotation angle in either of those locations did not affect the "sensor" FOV symbol in Kstars.

thanks for you help,
Ron

Read More...

Ronald Scotti replied to the topic 'PHD2: Some windows unreadable due to font color' in the forum. 3 weeks ago

Duh, sometimes things don't register (or make sense) the first time you read them (it could be an age thing - I qualify for that!).
thanks,
Ron

Read More...

Ronald Scotti replied to the topic 'PHD2: Some windows unreadable due to font color' in the forum. 3 weeks ago

ok, but I am still not sure how to set up separate themes for the two applications. I run "lxappearance" in a terminal window , it allows me to change "Widget" themes, but that does not appear to be application specific. Do I need to download something to do with GTK3 or a Phd config file somewhere that sets its theme?

thanks,
Ron

Read More...

And while you are working on this; it would be nice when you toggle on sensor FOV you get both the main camera and the guide camera FOV and if you could put in a physical offset between the two that would be even more useful (for finding guide stars - see how I just slipped that in!)

thanks,
Ron

Read More...

Actually it seems I mis-spoke. My FOV symbol on the Kstars chart is always pointing at the NCP. None of the simulator rotation settings (in WCS or SimConfig) seem to have any affect on the FOV orientation.

Read More...

I am running Kstars version 3.4.2 - from Astroberry Server
I set up a simulator camera and telescope info. If I put the angle in the camera simulator at 30 deg the fov symbol does come up at 30 deg. Now, how did you get a solver result in simulation mode? I do not have any access to the align module (it is there, but I cannot access any buttons)?

thanks,
Ron

Read More...