Inclination of large coronal loops observed by TRACE

A TRACE field of view well inside the solar disk shows very well defined la rge loops, likely to be very inclined to the solar surface. On the other ha nd there is little evidence of large loops perpendicular to the solar surfa ce. We show that this does not mean that most large loops have such large i nclination but that perpendicular loops are much less visible to TRACE, bec ause of density stratification. We quantitatively evaluate this effect by m odeling in detail loops with different inclinations.