Targets / Messier M73

Astrophotoguru™ · Asterism M73

All targets
Messier M73

Asterism M73

Open Cluster
Aquarius
Beginner

Small asterism, not a true cluster.

Angular size
3′
Magnitude
9
Best months
Jul-Oct
Constellation
Aquarius
Catalog IDs
M73
Common aliases
NGC 6994
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Recommended telescopes

Celestron
Celestron EdgeHD 14
3910mm f/11.0 · 356mm aperture
Frames 15% of APS-C FOV
Celestron
Celestron EdgeHD 11
2800mm f/10.0 · 279mm aperture
Frames 10% of APS-C FOV
Meade
Meade LX200 10" ACF
2540mm f/10.0 · 254mm aperture
Frames 9% of APS-C FOV
Astro-Tech
Astro-Tech AT12RC
2432mm f/8.0 · 305mm aperture
Frames 9% of APS-C FOV
Takahashi
Takahashi Mewlon-210
2415mm f/11.5 · 210mm aperture
Frames 9% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 9% 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 14 + ZWO ASI2600MC Pro
FOV 0.34° × 0.23°
Scale 0.20″/px
Target fills 22% of frame
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Celestron EdgeHD 11 + ZWO ASI2600MC Pro
FOV 0.48° × 0.32°
Scale 0.28″/px
Target fills 16% of frame
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Meade LX200 10" ACF + ZWO ASI533MC Pro
FOV 0.26° × 0.26°
Scale 0.31″/px
Target fills 20% of frame
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Related open clusters

Messier M103
Open Cluster M103
NGC NGC 6939
Open Cluster NGC 6939
Messier M18
Open Cluster M18
Messier M29
Open Cluster M29
Messier M36
Pinwheel Cluster
Messier M21
Open Cluster M21
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