Antisolar point anthelic point, such as the anthelion, Wegener arcs, Tricker arcs and the parhelic circle itself. Antisolar point The antisolar point is the abstract point on the celestial sphere directly opposite of the Sun from an observer's perspective. This means that the antisolar point lies above the horizon when the Sun is below it, and vice versa. On a sunny day, the antisolar point can be easily found; it is located within the shadow of the observer's head. Like the zenith and nadir, the antisolar point is not fixed in three-dimensional space, but is defined relative to the observer. Each observer
Point-to-Point Protocol over Ethernet PPPoE/LLC over PPPoA is 50% extra data sent. PPPoEoA + VC-MUX would be fine though: with 32 or 36 byte overhead, our IP packet still fits in two cells. In all cases the most efficient option for ATM-based ADSL internet access is to choose PPPoA (RFC2364) VC-MUX. However if PPPoEoA is required, then the best choice is always to use VC-MUX (as opposed to LLC) with no Ethernet FCS, giving an ATM payload overhead of 32 bytes = 2 bytes (for PPP) + 6 (for PPPoE) + 14 (Ethernet MAC, no FCS) + 2 (RFC 2684 VC-MUX) + 8 (AAL5