Calling User Photo outside the loop

I have created an author.php template that lists all the authors post at this URL:

domain.com/author/username

The posts are called using ‘the loop’. Above the loop I am calling some userdata as follows:

<h2>About: <?php echo $curauth->nickname; ?></h2>
    <dl class="custom_author">
        <dt>Website:</dt>
        <dd><a href="<?php echo $curauth->user_url; ?>"><?php echo $curauth->user_url; ?></a></dd>
        <dt>Profile:</dt>
        <dd><?php echo $curauth->user_description; ?></dd>
    </dl>

I’d like to add the calls from the User Profile plugin, for example:

<?php userphoto($authordata) ?>

If i put this in the header above the loop, it doesn’t work. If i put it in the loop, it works fine.

What do i need to do to put the user photo in this template header?