From c7fa81c02008a69c3dc4ef678be7c707a3dc43b7 Mon Sep 17 00:00:00 2001
From: Sam Bianco <sbianco@stsci.edu>
Date: Wed, 24 Jul 2024 14:34:39 -0500
Subject: [PATCH] filter products before removing duplicates

---
 astroquery/mast/observations.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/astroquery/mast/observations.py b/astroquery/mast/observations.py
index 963ff6095d..1e79b5b3e0 100644
--- a/astroquery/mast/observations.py
+++ b/astroquery/mast/observations.py
@@ -740,12 +740,12 @@ def download_products(self, products, *, download_dir=None, flat=False,
 
             products = vstack(product_lists)
 
-        # Remove duplicate products
-        products = self._remove_duplicate_products(products)
-
         # apply filters
         products = self.filter_products(products, mrp_only=mrp_only, **filters)
 
+        # remove duplicate products
+        products = self._remove_duplicate_products(products)
+
         if not len(products):
             warnings.warn("No products to download.", NoResultsWarning)
             return