Targets / Messier M18

Astrophotoguru™ · Open Cluster M18

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Messier M18

Open Cluster M18

Open Cluster
Sagittarius
Beginner
Angular size
9′
Magnitude
7.5
Best months
Jun-Sep
Constellation
Sagittarius
Catalog IDs
M18
Common aliases
NGC 6613
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Recommended telescopes

Celestron
Celestron EdgeHD 1400
3910mm f/11.0 · 356mm aperture
Frames 44% of APS-C FOV
Celestron
Celestron EdgeHD 1100
2800mm f/10.0 · 279mm aperture
Frames 31% of APS-C FOV
Meade
Meade LX200 10" ACF
2540mm f/10.0 · 254mm aperture
Frames 28% of APS-C FOV
Takahashi
Takahashi Mewlon-210
2415mm f/11.5 · 210mm aperture
Frames 27% of APS-C FOV
Celestron
Celestron C9.25 SCT
2350mm f/10.0 · 235mm aperture
Frames 26% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 26% 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 65% of frame
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Celestron EdgeHD 1100 + ZWO ASI2600MC Pro
FOV 0.48° × 0.32°
Scale 0.28″/px
Target fills 47% of frame
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Meade LX200 10" ACF + ZWO ASI533MC Pro
FOV 0.26° × 0.26°
Scale 0.31″/px
Target fills 59% of frame
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Related open clusters

Messier M29
Open Cluster M29
NGC NGC 6939
Open Cluster NGC 6939
Messier M36
Pinwheel Cluster
Messier M103
Open Cluster M103
Messier M21
Open Cluster M21
Messier M52
Open Cluster M52
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