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PEMPro Polar Wizard Question #Polar_Alignment
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Shailesh Trivedi
I am trying to polar align my AP1100 using Pempro's polar wizard. In the step where the wizard tries to determine north/south/east/west I get no mount movement and the imaging fails, I am using the main camera that is not connected to the CP4 auto guider port. Is that a requirement? How exactly does the movement occur? My main camera does not have an ST4 output port.
Shailesh |
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Woody Schlom
Shailesh,
I’m sure others more experienced than I will have better replies, but as I recall, I never got my mount and Pempro to work with my main camera and scope. I only got things to work when I used my guide scope and guide camera. I think Pempro needs a really wide FOV – and bright star images. And that’s what my guide scope and guide camera gave it.
Woody
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Shailesh Trivedi
Sent: Sunday, December 20, 2020 12:07 AM To: main@ap-gto.groups.io Subject: [ap-gto] PEMPro Polar Wizard Question #Polar_Alignment
I am trying to polar align my AP1100 using Pempro's polar wizard. In the step where the wizard tries to determine north/south/east/west I get no mount movement and the imaging fails, I am using the main camera that is not connected to the CP4 auto guider port. Is that a requirement? How exactly does the movement occur? My main camera does not have an ST4 output port. |
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Ray Gralak
Hi Shailesh,
I am trying to polar align my AP1100 using Pempro's polar wizard. In the step where the wizard tries to determinePEMPro does not require an ST4 output port to move the mount. The movements for this step are usually accomplished by slewing the telescope to new RA/Dec coordinates via the ASCOM driver. You should not enable the checkboxes for "Custom Move Cmds" or "Re-center scope after last image" (see attached screenshot). That being said, by default PEMPro does not move the mount very much so that it will be easier to identify the same star in each image. I get no mount movement and the imaging failsWhat do you mean by "imaging fails"? No images are displayed? Or, you believe all images are the same? If it is the latter, did you try clicking the "Full Screen View" button? This will allow you to view each image on the entire computer screen. If you still cannot discern movement, increase the "Move Distance" value, and try again. If the image is too large, you can bin 2x2 or 3x3 (on step 2). A fine image scale is not essential for polar alignment. -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver -----Original Message----- 
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Ray Gralak
Hi Woody,
I’m sure others more experienced than I will have better replies, but as I recall, I never got my mount and Pempro toPEMPro does not require a really wide FOV. However, PEMPro may fail to find a suitable star if no stars fall within the minimum to maximum brightness range that you define. Using the min/max range, PEMPro will automatically select a star that is not saturated. This will provide PEMPro with a good stellar profile for centroid calculations. You do not want to have PEMPro select a very bright star, as the centroid calculation will likely be inaccurate if the star is saturated. -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics Command Center): https://www.astro-physics.com/apcc-pro Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver -----Original Message----- |
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