draw celestial grid?

[anzgar01]

Hi there, can anyone point me in the right direction what to do if I wanted to draw the celestial grid as well?

Thanks a lot!

[randomdipesh]

//draw grid

function drawGrid (context, gridSize, color) { context.lineWidth = 0.5; context.strokeStyle = color || "#CCC";

// Draw vertical grid lines
for (var x = 0; x <= context.canvas.width; x += gridSize) {
    context.beginPath();
    context.moveTo(x, 0);
    context.lineTo(x, context.canvas.height);
    context.stroke();
}

// Draw horizontal grid lines
for (var y = 0; y <= context.canvas.height; y += gridSize) {
    context.beginPath();
    context.moveTo(0, y);
    context.lineTo(context.canvas.width, y);
    context.stroke();
}

}