Quote:
Originally Posted by DJDD
Currently I have an ED80 on an EQPro 6 mount and may mount an 8" or 10" dob tube at a later date.
what wall height (not specific to this style of obs) would people recommend?
Obviously, if the surrounding field of view is restricted then it's no point building lower than that but what about taking into account wind?
Would you build the obs walls as high (or just higher than) the mount or somewhere between the mount and the height of the tube?
thanks for your thoughts.
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An ED80 is a nice relatively short tube that offers little wind resistance and would therefore be quite stable on an EQ6 even if there was a bit of a gust. Also the FOV of an ED80 is sufficiently wide to forgive the occasional 'shake'. So there would not be an overwhelming need for higher walls - this would be different if you were using say a 200mm F5 newtonian or something with a bit more wind resistance.
Since you won't be imaging bel9ow about 20 degrees in the east or west, high walls there won't be a problem. That will be different if you want to shoot north though where sometimes you have to live with a bit of parallax, dust and light pollution in order to get at objects you won't otherwise ever reach. So it's all about deciding what you want to see/image and with what equipment.
I favour high walls for wind protection since I am using big scopes but for you it would not be a priority item.
Peter