|
|
This is just a sample image of my work in progress. Most labels, etc should be pretty obvious. Nothing too important, just a snapshot of where I am in the process. RMS Observatory Horizon alt-az.png (1,681,110 bytes) |
|
|
Hello Basil, The problem with the all sky image is to make a precise computation of the elevation, an horizon picture like the one you attach in previous post is more easy to use. You can load both the horizon file and the picture (see attached screenshot) this way you see the picture on the chart and the rise/set time are computed using the text file. This is what I use for my observations. The same text file can also be loaded in CCDCiel so imaging sequence use the rise/set time from this. To create the file I make a script to add the points from the telescope position. Use the menu Setup / Manage tool box script, and select "Make_Horizon_Profile". Use the associate Fn key to show the script on the left pane. The use is easy, connect the telescope, point the mouse on a tree top in the picture, use the right click menu "Slew to cursor position", then click "Add point". You can save or reload a file for modification, for example to add more points. You can use the real telescope, in this case this allow to check the telescope really point above the tree, but this can also be done with a telescope simulator if you are confident on your picture alignment. horizon.png (27,219 bytes) |
|
|
This is excellent, exactly what I was trying to do. I found the Make_Horizon_Profile script, then I attached an old ASI120M guide camera with it's fisheye lens to the end of my C14 and was about to start measuring my horizon when it started to rain - and it hasn't stopped. I'm not complaining though, our area desperately needs rain so let it rain, I can wait. Thank you again, I thought something like the script might already exist. IMG_20251019_161120-EDIT.jpg (177,557 bytes) |
|
|
I got the horizon file done this morning. Pretty easy, the hardest part was slewing the equatorial mount for altitude, azimuth measurements :) Also, I run the telescope with a Raspberry Pi and wondered why I could not record points (altitude, azimuth) but it worked fine on my Windows 11 laptop. Sure felt like a permissions problem, but I didn't investigate, I just used my Windows machine. I think I remember reading something in the forums about Linux permission issues for scripts. Oh well, thank you again for pointing out the scripts - I knew CDC had the ability, but I didn't know you already created some. Looking forward to trying the others. You can mark this feature request as complete as far as I'm concerned. Thank you again |
|
|
I'm adding this note that may be of help. I found something today I wish I had found a couple weeks ago (found it searching Cloudy Nights). If you go to this guys github page he has created a free, simple, web phone app that will create a list of azimuths' and altitudes' with your smart phone's camera. All you do is point at places along your horizon. He did this basically to create horizon profiles for various astro programs. It works GREAT, super simple and fast! I used an Android phone and I'm pretty sure works on iOS. It's not an app you download and install, just go to the link below -- With Your Phone --, read the brief instructions, and start measuring your horizon. Took me about 5-10 minutes, but I used a tripod with phone holder to make panning around a little smoother and took a lot of measurements. Would have saved me hours of time messing with defishing fisheye images, etc... - like the Rabbit Hole I went down to create the image in my first post .... but all that was a good learning experience He calls it Gyro Cam and this is the link: https://rkinnett.github.io/gyrocam/ Thank You very much Ryan Kinnett !! |
- Anonymous
