[Kokatha man]

If I don't ask I'll never know - but when looking up DIY jobs for affixing setting circles on a Dob mount the azimuth scale allways seems to be gradated in degrees like the altitude/declination - not in hours and minutes as on an EQ mount.

I realize that the Dob hasn't the sophistication of an EQ and needs to be level and have the OTA's alignment projected onto the rotating table (so that this can be aligned geo south) to make any pretence at this particular circle being an aid to object locating - but why degrees?

Charts give RA - so what's the point? I would have thought that RA positions are constant regardless of the polar axis's angle of alignment: at the Poles (brrr!) a level Dob should be an EQ!?!

Hoping someone can enlighten this old blackfella who's both enraptured and overwhelmed by his re-entry into the world of AA.

ps - if you wish to enlighten me please be kind if this old fool has lost something in translation or mental capacity!!! (have ordered one of Brian Reed's EQ platforms for my 10" Bint.)