Sky & Telescope - April 2025 - 23

MESSIER NUMBER ONE Although the Crab Nebula in Taurus holds
the distinction of being the first object in French comet-seeker Charles
Messier's famous catalog, on marathon night it's distinctly middle of
the pack. This supernova remnant is best sighted in late evening, after
more challenging objects have already been logged.
NUMBER ONE ON THE HIT PARADE Known as the Phantom
Galaxy, M74 in Pisces is among the first targets sought by those
participating in a Messier marathon. This face-on spiral lives up to its
ghostly reputation especially in twilight when its low surface-brightness
compounds its elusive nature.
Marathon Observing Sequence #1
(for latitude 28° north on March 21st)
19h to 20h: M45, M31, M32, M110,
M33, M74, M77
M45 can be seen in twilight; the other
targets need a low horizon to the
northwest. Both M110 and M33 have
very low surface brightnesses and can
be difficult in poor skies. M74 is the
toughest of the evening targets. It also
has a very low surface brightness and
can only be observed after astronomical
twilight ends.
20h to 21h: M52, M76, M103, M34,
M36, M37, M38, M1, M35, M78, M42,
M43, M79
M52 needs a low horizon to the
northwest, but can be observed in the
morning if missed now.
21h to 22h: M50, M41, M47, M46,
M93, M48, M67, M44
Most of these objects remain very
high and can be observed later if
necessary.
22h to 23h: M95, M96, M105, M65, M66,
M81, M82, M108, M97, M109, M40
23h to 0h: M106, M94, M63, M51,
M101, M102, M3, M53, M64
0h to 1h: M98, M99, M100, M85, M84,
M86, M88, M87, M91, M90, M89
The Virgo Cluster. Observers unfamiliar
with the region should be very
careful as non-Messier objects are
present in many fields.
1h to 2h: M58, M59, M60, M49, M61,
M104, M68, M83
The eastern and southern part of the
Virgo cluster. After finishing this section
you're more than halfway through
and can take a short break.
2h to 3h: M13, M92, M5, M10, M12,
M107, M14
Catch these objects as soon as they
rise above the eastern horizon.
3h to 4h: M57, M56, M29, M39, M27,
M71, M80, M4, M9, M19, M62, M11,
M26
Again, log each object as it clears the
eastern horizon.
4h to 5h: M16, M17, M18, M24, M23,
M20, M21, M8, M25, M22, M28, M6,
M7
Work your way through the summer
Milky Way from north to south.
5h to 6h: M72, M73, M15, M2, M55,
M75, M54, M70, M69
All these targets need an unobstructed
horizon to the east.
6h to 7h: M30
The remaining object is the only
tough one in the morning sky. It must
be observed under cloudless and
haze-free conditions at dawn from a
location with an unobstructed eastsoutheastern
horizon.
sk yand tele scope .o r g * APRIL 2025 23
M1: BERNHARD HUBL M74: RON BRECHER

http://skyandtelescope.org

Sky & Telescope - April 2025

Table of Contents for the Digital Edition of Sky & Telescope - April 2025

Contents
Sky & Telescope - April 2025 - Cover1
Sky & Telescope - April 2025 - Cover2
Sky & Telescope - April 2025 - 1
Sky & Telescope - April 2025 - Contents
Sky & Telescope - April 2025 - 3
Sky & Telescope - April 2025 - 4
Sky & Telescope - April 2025 - 5
Sky & Telescope - April 2025 - 6
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Sky & Telescope - April 2025 - 8
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