Targets / Messier M55

Astrophotoguru™ · Globular Cluster M55

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Messier M55

Globular Cluster M55

Globular Cluster
Sagittarius
Beginner
Angular size
19′
Magnitude
6.3
Best months
Jul-Sep
Constellation
Sagittarius
Catalog IDs
M55
Common aliases
NGC 6809
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Recommended telescopes

Meade
Meade LX200 8" ACF
2032mm f/10.0 · 203mm aperture
Frames 48% of APS-C FOV
Celestron
Celestron C8 SCT
2032mm f/10.0 · 203mm aperture
Frames 48% of APS-C FOV
Celestron
Celestron EdgeHD 800
2032mm f/10.0 · 203mm aperture
Frames 48% of APS-C FOV
Celestron
Celestron C9.25 SCT
2350mm f/10.0 · 235mm aperture
Frames 55% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 55% of APS-C FOV
Takahashi
Takahashi Mewlon-210
2415mm f/11.5 · 210mm aperture
Frames 57% 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

Meade LX200 8" ACF + ZWO ASI533MC Pro
FOV 0.32° × 0.32°
Scale 0.38″/px
Target fills 99% of frame
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Celestron C8 SCT + ZWO ASI533MC Pro
FOV 0.32° × 0.32°
Scale 0.38″/px
Target fills 99% of frame
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Celestron EdgeHD 800 + ZWO ASI2600MC Pro
FOV 0.66° × 0.44°
Scale 0.38″/px
Target fills 72% of frame
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Related globular clusters

Messier M13
Great Hercules Cluster
Messier M3
Globular Cluster M3
Messier M10
Globular Cluster M10
Messier M15
Great Pegasus Cluster
Messier M19
Globular Cluster M19
Messier M2
Globular Cluster M2
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