Getting http 500 error

Hello, Im quite a novice when it comes to wordpress and I’ve run into a problem. I was trying to make only the header image show on the front page so I added:

<?php if(is_home) { ?>

  <div class="head-img">
  ...
  </div>
  <!-- END Header -->

<?php } ?>

Around

	<?php $header_image = get_header_image();
		if ( ! empty( $header_image ) ) : ?>
			<a>"><img src="<?php echo esc_url( $header_image ); ?>" class="header-image" width="<?php echo get_custom_header()->width; ?>" height="<?php echo get_custom_header()->height; ?>" alt="" /></a>

<?php } ?>

It didnt work, and when I removed the the thing I added it now shows a http 500 error which wont go away.

Can anyone see in that last code-text what is wrong?