Hi Group, I am setting the dome parameters and I am currently having the telescope pointing half the slit, can someone help me out and just confirm if my diagram below setting are what should be. Thanks
Charles
Hi Charles (Carlos)
Your first setting stating Diameter = Radius
Be careful with this one. My settings are shown in the diagrams below and you will note in the “observatory settings” I have the dome Diameter entered but in the ASCOM driver from Shelyak, I have the dome Radius entered.
I am unsure where SGP takes the info for the maths, when slewing the dome, but I can say, before changing the figure in the driver from Diameter to Radius, I had lots of problems…so it certainly needs to be set as Radius somewhere
I am sorry, I am unable to change the letters on my diagram to correspond with yours…so again, please take care;
GEM = B in my diagram. (I think that looks the same as “A” in yours).
North Offset: Your “B” distance is correct as long as your pier in right in the center of the dome. If pier is not center - then the offset of the pier must be allowed for also
Vertical: See “A” on my diagram…NOT the same as “C” on yours.
Regards,
Kinch.
Hi Kinch thanks again for answer my questions, I understand now and finally I have measurements, the diagram is a follows:
On the East Offset, I don’t really understand this measurement, should I leave it at zero given that the pier /mount is right in the center of the dome??
Thanks
Carlos
OK Carlos - glad to help - I hope things work out. As for East offset…with pier/mount exactly in the center then you are correct…leave the offset at Zero.
Cheers,
Kinch.
Hi Carlos,
I use SGP in combination with LesveDome. In my set-up I had to enter radius in the diameter field to get things work correct. On my website I describe the set-up of my dome and how to test whether the correct value for diameter is entered. It is quite a long read, the part of setting up SGP starts next to fig. 7. The last four paragraphs deal with the radius and is titled “Radius vs. diameter in SGP”.
The main section reads:
What radius fits best can simply be found by testing it: keep the shutter closed and aim the scope at a point near the celestial equator in the meridian while west of the pier. Let the dome move and mark the spot on the inside of the dome-shutter where the scope aims at. Flip the mount and let LesveDome do its job. Again mark the point on the shutter the scope is aiming at. When the value for diameter is too large (i.e. when diameter is treated as radius like in SGP) the point that the scope aims at while being west of the pier would be west of the point that was found with the scope on the other side of the pier. Reducing the diameter and rerunning this test showed whether or not the two points moved closer to each other.
Nicolàs