diff --git a/datasets/aster/aster.py b/datasets/aster/aster.py
index 08c7ced0..2b90d8bb 100644
--- a/datasets/aster/aster.py
+++ b/datasets/aster/aster.py
@@ -92,18 +92,10 @@ def run(self, input: CreateChunksInput, context: TaskContext) -> CreateChunksOut
         item_collection = read_item_collection(
             asset["href"], storage_options=asset["table:storage_options"]
         )
-        chunks = []
-        chunk = []
-        for item in itertools.islice(item_collection, input.limit):
-            chunk.append(fix_dict(item.to_dict(include_self_link=False)))
-            if len(chunk) >= input.chunk_size:
-                chunks.append(chunk)
-                chunk = []
-        if chunk:
-            chunks.append(chunk)
         output = []
-        for i, chunk in enumerate(chunks):
-            uri = f"{input.dst_uri}/{asset['partition_number']}/{i}.ndjson"
+
+        def write_chunk(chunk: List[Item], chunk_number: int) -> None:
+            uri = f"{input.dst_uri}/{asset['partition_number']}/{chunk_number}.ndjson"
             storage, path = context.storage_factory.get_storage_for_file(uri)
             storage.write_text(
                 path, "\n".join(orjson.dumps(item).decode("utf-8") for item in chunk)
@@ -111,10 +103,23 @@ def run(self, input: CreateChunksInput, context: TaskContext) -> CreateChunksOut
             output.append(
                 Chunk(
                     uri=storage.get_uri(path),
-                    id=str(i),
+                    id=str(chunk_number),
                     partition_number=str(asset["partition_number"]),
                 )
             )
+            return chunk_number + 1
+
+        chunk = []
+        chunk_number = 0
+        for item in itertools.islice(item_collection, input.limit):
+            chunk.append(
+                fix_dict(item.to_dict(include_self_link=False, transform_hrefs=False))
+            )
+            if len(chunk) >= input.chunk_size:
+                chunk_number = write_chunk(chunk, chunk_number)
+                chunk = []
+        if chunk:
+            write_chunk(chunk, chunk_number)
         return CreateChunksOutput(chunks=output)
 
 
@@ -147,9 +152,17 @@ def run(self, input: UpdateItemsInput, context: TaskContext) -> UpdateItemsOutpu
                 new_item = sign_and_update(item, input.simplify_tolerance)
             except Exception as e:
                 logger.error(e)
-                error_items.append(fix_dict(item.to_dict(include_self_link=False)))
+                error_items.append(
+                    fix_dict(
+                        item.to_dict(include_self_link=False, transform_hrefs=False)
+                    )
+                )
             else:
-                items.append(fix_dict(new_item.to_dict(include_self_link=False)))
+                items.append(
+                    fix_dict(
+                        new_item.to_dict(include_self_link=False, transform_hrefs=False)
+                    )
+                )
         logger.info(f"{len(items)} items updated, {len(error_items)} errors")
         storage, path = context.storage_factory.get_storage_for_file(
             f"{input.item_chunkset_uri}/{input.partition_number}/{input.chunk_id}.ndjson"
diff --git a/datasets/aster/dataset.yaml b/datasets/aster/dataset.yaml
index 6adf77a3..d7f45bbe 100644
--- a/datasets/aster/dataset.yaml
+++ b/datasets/aster/dataset.yaml
@@ -1,6 +1,6 @@
 # TODO actually implement this -- this is currently a placeholder just to upload the collection
 id: aster
-image: ${{ args.registry }}/pctasks-task-base:latest
+image: ${{ args.registry }}/pctasks-aster:latest
 
 args:
   - registry
diff --git a/datasets/aster/update-geometries-ingest.yaml b/datasets/aster/update-geometries-ingest.yaml
new file mode 100644
index 00000000..c859d125
--- /dev/null
+++ b/datasets/aster/update-geometries-ingest.yaml
@@ -0,0 +1,28 @@
+name: Ingest NDJsons from blob://astersa/aster-etl-data/items/update-geometries
+jobs:
+  ingest-items:
+    id: ingest-items
+    tasks:
+    - id: ingest-ndjson
+      image_key: ingest
+      task: pctasks.ingest_task.task:ingest_task
+      args:
+        content:
+          type: Ndjson
+          ndjson_folder:
+            uri: blob://astersa/aster-etl-data/items/update-geometries
+            extensions:
+            - .ndjson
+            matches: \d+.ndjson
+        options:
+          insert_group_size: 5000
+          insert_only: false
+      environment:
+        AZURE_TENANT_ID: ${{ secrets.task-tenant-id }}
+        AZURE_CLIENT_ID: ${{ secrets.task-client-id }}
+        AZURE_CLIENT_SECRET: ${{ secrets.task-client-secret }}
+      schema_version: 1.0.0
+schema_version: 1.0.0
+id: aster-update-geometries-ingest
+dataset: microsoft/aster-l1t
+
diff --git a/datasets/aster/update-geometries.yaml b/datasets/aster/update-geometries.yaml
index 72225b4c..6cf544f8 100644
--- a/datasets/aster/update-geometries.yaml
+++ b/datasets/aster/update-geometries.yaml
@@ -32,12 +32,14 @@ jobs:
         task: aster:create_chunks_task
         args:
           asset: ${{ item }}
-          dst_uri: blob://astersa/aster-etl-data/chunks/update-geometries
+          dst_uri: blob://astersa/aster-etl-data/chunks/update-geometries-2023-01-23-00
           chunk_size: 5000
         environment:
           AZURE_TENANT_ID: ${{ secrets.task-tenant-id }}
           AZURE_CLIENT_ID: ${{ secrets.task-client-id }}
           AZURE_CLIENT_SECRET: ${{ secrets.task-client-secret }}
+        tags:
+          batch_pool_id: high_memory_pool
   update-items:
     foreach:
       items: ${{ jobs.create-chunks.tasks.create-chunks.output.chunks }}
@@ -54,7 +56,7 @@ jobs:
           partition_number: ${{ item.partition_number }}
           chunk_uri: ${{ item.uri }}
           chunk_id: ${{ item.id }}
-          item_chunkset_uri: blob://astersa/aster-etl-data/items/update-geometries
+          item_chunkset_uri: blob://astersa/aster-etl-data/items/update-geometries-2023-01-23-00
           simplify_tolerance: 0.001
         environment:
           AZURE_TENANT_ID: ${{ secrets.task-tenant-id }}