diff --git a/scripts/telegram/telegram_cron.php b/scripts/telegram/telegram_cron.php
index 96e1448..719e74f 100644
--- a/scripts/telegram/telegram_cron.php
+++ b/scripts/telegram/telegram_cron.php
@@ -93,7 +93,7 @@ $tasks = [
             }
 
             $messageText = buildTcrbLatestVMessage($latestObservation, $nowBerlin);
-            $chartObservations = fetchRecentTcrbObservationsByFilter($pdo, 'V', 80);
+            $chartObservations = fetchRecentTcrbObservationsByFilterWindow($pdo, 'V', '-2 months');
             $chartSvg = buildTcrbVChartSvg($chartObservations, $latestObservation);
             $chartPackage = createTelegramChartPackage($chartSvg);
             $sentCount = 0;
@@ -421,8 +421,12 @@ function fetchLatestTcrbObservationByFilter(PDO $pdo, string $filterCode): ?arra
     return is_array($row) ? $row : null;
 }
 
-function fetchRecentTcrbObservationsByFilter(PDO $pdo, string $filterCode, int $limit = 80): array
+function fetchRecentTcrbObservationsByFilterWindow(PDO $pdo, string $filterCode, string $windowSpec = '-2 months'): array
 {
+    $windowStartUtc = (new DateTimeImmutable('now', new DateTimeZone('UTC')))
+        ->modify($windowSpec)
+        ->format('Y-m-d H:i:s');
+
     $stmt = $pdo->prepare("
         SELECT
             `id`,
@@ -434,17 +438,38 @@ function fetchRecentTcrbObservationsByFilter(PDO $pdo, string $filterCode, int $
             `observer_code`
         FROM `aavso_tcrb_observations`
         WHERE `filter_code` = :filter_code
-        ORDER BY `observed_at_utc` DESC, `id` DESC
-        LIMIT :row_limit
+          AND `observed_at_utc` >= :window_start_utc
+        ORDER BY `observed_at_utc` ASC, `id` ASC
     ");
-    $stmt->bindValue(':filter_code', $filterCode, PDO::PARAM_STR);
-    $stmt->bindValue(':row_limit', max(5, $limit), PDO::PARAM_INT);
-    $stmt->execute();
+    $stmt->execute([
+        ':filter_code' => $filterCode,
+        ':window_start_utc' => $windowStartUtc,
+    ]);
     $rows = $stmt->fetchAll();
 
-    usort($rows, static function (array $a, array $b): int {
-        return strcmp((string) ($a['observed_at_utc'] ?? ''), (string) ($b['observed_at_utc'] ?? ''));
-    });
+    if ($rows === []) {
+        $fallbackStmt = $pdo->prepare("
+            SELECT
+                `id`,
+                `observed_at_utc`,
+                `jd`,
+                `magnitude`,
+                `magnitude_error`,
+                `filter_code`,
+                `observer_code`
+            FROM `aavso_tcrb_observations`
+            WHERE `filter_code` = :filter_code
+            ORDER BY `observed_at_utc` DESC, `id` DESC
+            LIMIT 30
+        ");
+        $fallbackStmt->execute([
+            ':filter_code' => $filterCode,
+        ]);
+        $rows = $fallbackStmt->fetchAll();
+        usort($rows, static function (array $a, array $b): int {
+            return strcmp((string) ($a['observed_at_utc'] ?? ''), (string) ($b['observed_at_utc'] ?? ''));
+        });
+    }
 
     return $rows;
 }
@@ -636,7 +661,7 @@ function buildTcrbVChartSvg(array $observations, array $latestObservation): stri
   <rect width="%d" height="%d" fill="url(#bg)"/>
   <rect x="%d" y="%d" width="%d" height="%d" rx="16" fill="#11263b" stroke="#2f4d68" stroke-width="1.5"/>
   <text x="%d" y="44" fill="#f8fafc" font-size="30" font-weight="700">T CrB Lichtkurve - Filter V</text>
-  <text x="%d" y="70" fill="#cbd5e1" font-size="19">letzte 80 Messpunkte, kleinere Magnituden sind heller</text>
+  <text x="%d" y="70" fill="#cbd5e1" font-size="19">letzte 2 Monate</text>
   <text x="%d" y="%d" fill="#cbd5e1" font-size="18">%s</text>
   <text x="%d" y="%d" fill="#cbd5e1" font-size="18" text-anchor="end">%s</text>
   <text x="%d" y="48" fill="#f4d35e" font-size="22" text-anchor="end">Aktuell: %s%s</text>