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Messier M91
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Barred Spiral M91
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Messier M91
Barred Spiral M91
Galaxy
Coma Berenices
Intermediate
Angular size
5′ × 4′
Magnitude
10.2
Best months
Mar-Jun
Constellation
Coma Berenices
Catalog IDs
M91
Common aliases
NGC 4548
Open in planner
Recommended telescopes
Celestron
Celestron EdgeHD 1400
3910mm f/11.0 · 356mm aperture
Frames 24% of APS-C FOV
Celestron
Celestron EdgeHD 1100
2800mm f/10.0 · 279mm aperture
Frames 17% of APS-C FOV
Meade
Meade LX200 10" ACF
2540mm f/10.0 · 254mm aperture
Frames 16% of APS-C FOV
Takahashi
Takahashi Mewlon-210
2415mm f/11.5 · 210mm aperture
Frames 15% of APS-C FOV
Celestron
Celestron C9.25 SCT
2350mm f/10.0 · 235mm aperture
Frames 15% of APS-C FOV
Celestron
Celestron EdgeHD 9.25
2350mm f/10.0 · 235mm aperture
Frames 15% 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
36%
of frame
Preview in planner
Celestron EdgeHD 1100
+
ZWO ASI2600MC Pro
FOV
0.48° × 0.32°
Scale
0.28″/px
Target fills
26%
of frame
Preview in planner
Meade LX200 10" ACF
+
ZWO ASI533MC Pro
FOV
0.26° × 0.26°
Scale
0.31″/px
Target fills
33%
of frame
Preview in planner
Related galaxys
Messier M59
Elliptical Galaxy M59
Messier M89
Elliptical Galaxy M89
Messier M99
Coma Pinwheel
Messier M102
Spindle Galaxy
Messier M105
Elliptical Galaxy M105
NGC NGC 3877
Spiral NGC 3877
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Imaging planner
celestron-edgehd-1400
Messier M91 — Barred Spiral M91