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NGC NGC 457
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NGC NGC 457
Owl Cluster
Open Cluster
Cassiopeia
Beginner
Angular size
20′
Magnitude
6.4
Best months
Sep-Feb
Constellation
Cassiopeia
Catalog IDs
NGC 457
Common aliases
ET Cluster;Caldwell 13
Open in planner
Recommended telescopes
Celestron
Celestron EdgeHD 8
2032mm f/10.0 · 203mm aperture
Frames 50% of APS-C FOV
Meade
Meade LX200 8" ACF
2032mm f/10.0 · 203mm aperture
Frames 50% of APS-C FOV
Celestron
Celestron C8 SCT
2032mm f/10.0 · 203mm aperture
Frames 50% of APS-C FOV
Astro-Tech
Astro-Tech AT10RC
2000mm f/8.0 · 254mm aperture
Frames 50% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 58% of APS-C FOV
Celestron
Celestron C9.25 SCT
2350mm f/10.0 · 235mm aperture
Frames 58% of APS-C FOV
Recommended cameras
ZWO
ZWO ASI2600MC Pro
3.76µm pixels · cooled
ZWO
ZWO ASI2600MM Pro
3.76µm pixels · cooled
ZWO
ZWO ASI6200MC Pro
3.76µm pixels · cooled
ZWO
ZWO ASI6200MM Pro
3.76µm pixels · cooled
ZWO
ZWO ASI533MC Pro
3.76µm pixels · cooled
ZWO
ZWO ASI533MM Pro
3.76µm pixels · cooled
Example framing
Celestron EdgeHD 8
+
ZWO ASI2600MC Pro
FOV
0.66° × 0.44°
Scale
0.38″/px
Target fills
75%
of frame
Preview in planner
Meade LX200 8" ACF
+
ZWO ASI533MC Pro
FOV
0.32° × 0.32°
Scale
0.38″/px
Target fills
105%
of frame
Preview in planner
Celestron C8 SCT
+
ZWO ASI533MC Pro
FOV
0.32° × 0.32°
Scale
0.38″/px
Target fills
105%
of frame
Preview in planner
Related open clusters
Messier M38
Starfish Cluster
Messier M93
Open Cluster M93
Messier M37
Open Cluster M37
Messier M50
Heart-Shaped Cluster
NGC NGC 663
Open Cluster NGC 663
NGC NGC 2244
Rosette Cluster
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celestron-edgehd-8
NGC NGC 457 — Owl Cluster