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NGC NGC 6939
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Open Cluster NGC 6939
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NGC NGC 6939
Open Cluster NGC 6939
Open Cluster
Cepheus
Beginner
Angular size
7′
Magnitude
7.8
Best months
Jul-Nov
Constellation
Cepheus
Catalog IDs
NGC 6939
Common aliases
—
Open in planner
Recommended telescopes
Celestron
Celestron EdgeHD 1400
3910mm f/11.0 · 356mm aperture
Frames 34% of APS-C FOV
Celestron
Celestron EdgeHD 1100
2800mm f/10.0 · 279mm aperture
Frames 24% of APS-C FOV
Meade
Meade LX200 10" ACF
2540mm f/10.0 · 254mm aperture
Frames 22% of APS-C FOV
Takahashi
Takahashi Mewlon-210
2415mm f/11.5 · 210mm aperture
Frames 21% of APS-C FOV
Celestron
Celestron C9.25 SCT
2350mm f/10.0 · 235mm aperture
Frames 20% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 20% 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 1400
+
ZWO ASI2600MC Pro
FOV
0.34° × 0.23°
Scale
0.20″/px
Target fills
51%
of frame
Preview in planner
Celestron EdgeHD 1100
+
ZWO ASI2600MC Pro
FOV
0.48° × 0.32°
Scale
0.28″/px
Target fills
36%
of frame
Preview in planner
Meade LX200 10" ACF
+
ZWO ASI533MC Pro
FOV
0.26° × 0.26°
Scale
0.31″/px
Target fills
46%
of frame
Preview in planner
Related open clusters
Messier M103
Open Cluster M103
Messier M18
Open Cluster M18
Messier M29
Open Cluster M29
Messier M73
Asterism M73
Messier M36
Pinwheel Cluster
Messier M21
Open Cluster M21
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Imaging planner
celestron-edgehd-1400
NGC NGC 6939 — Open Cluster NGC 6939