Targets / Messier M55

Astrophotoguru™ · Globular Cluster M55

All targets
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
Open in planner

Recommended telescopes

Celestron
Celestron EdgeHD 8
2032mm f/10.0 · 203mm aperture
Frames 48% of APS-C FOV
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
Astro-Tech
Astro-Tech AT10RC
2000mm f/8.0 · 254mm aperture
Frames 47% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 55% of APS-C FOV
Celestron
Celestron C9.25 SCT
2350mm f/10.0 · 235mm aperture
Frames 55% 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 72% of frame
Preview in planner
Meade LX200 8" ACF + ZWO ASI533MC Pro
FOV 0.32° × 0.32°
Scale 0.38″/px
Target fills 99% of frame
Preview in planner
Celestron C8 SCT + ZWO ASI533MC Pro
FOV 0.32° × 0.32°
Scale 0.38″/px
Target fills 99% of frame
Preview in planner

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
Browse all targetsBrowse equipmentImaging planner