Sky & Telescope - April 2019 - 30
Messier Marathon
A FAR NORTHERN
MARATHON (CONTINUED)
M67
COMMENT:
M52
COMMENT:
M34
COMMENT:
M35
COMMENT:
M37
COMMENT:
M36
COMMENT:
M38
COMMENT:
M3
Type
Mag(v)
Size/Sep.
RA
Dec.
Cnc
OC
6.9
30′
08h 51.3m
+11° 48′
OC
6.9
13′
23h 24.2m
+61° 35′
5.2
5.1
Binoculars
Cas
Binoculars
Per
M81
COMMENT:
M82
COMMENT:
M97
M108
COMMENT:
OC
35′
02h
42.0m
+42° 47′
28′
06h 08.9m
+24° 20′
Naked eye or binoculars
Gem
OC
Naked eye or binoculars
Aur
OC
5.6
24′
05h 52.4m
+32° 33′
OC
6.0
12′
05h 36.3m
+34° 08′
OC
6.4
21′
05h 28.7m
+35° 50′
GC
6.2
18′
13h 42.2m
+28° 23′
G
6.9
21′ × 10′
09h 55.6m
+69° 04′
8.4
9′ × 4′
09h 55.8m
+69° 41′
Binoculars
Aur
Binoculars
Aur
Binoculars
CVn
COMMENT:
Binoculars
UMa
Same field of view as M82
UMa
G
Same field of view as M81
UMa
PN
9.9
3′ × 3′
11h 14.8m
+55° 01′
UMa
G
10.0
8′ × 1′
11h 11.5m
+55° 40′
49′ northwest of M97
M109
UMa
G
9.8
7′ × 4′
11h 57.6m
+53° 23′
M40
UMa
-
8.4
0.8′
12h 22.4m
+58° 05′
COMMENT:
30
Constellation
Double star
A PR I L 2 019 * SK Y & TELESCOPE
p MASQUERADE Spotting the reflection nebula M78 in Orion will be
easier with a transparent sky. While photos reveal a wealth of detail
and color, in the eyepiece the nebula resembles a comet with two stars
embedded in it.
arcs. Consequently, they must be observed at much lower
altitudes and in brighter twilight.
So, marathoning at northern latitudes is very challenging.
For example, on March 27th (the prime marathon date in
southern Arizona) observers at latitude 33°N will find M70
at an altitude of 19° at the beginning of morning astronomical twilight. On the same morning at my observing site, when
M70 finally reaches an altitude of 4°, it's well into twilight, as
the Sun is only 15° degrees below the horizon. Weather satellite images have shown that to catch the globulars of southern Sagittarius from my site during marathon season, the sky
has to be clear all the way to northern Oregon!
The most difficult evening object is the face-on spiral galaxy
M74 in Pisces. Not only do you have to contend with its low
altitude and lingering twilight, but you're hunting in the bright
base of the zodiacal light. Expert observer Jim Failes declared
M74 invisible at this latitude on March 25th. Here's my cloudbattling experience from 11 days earlier (March 14th), variable
cloudiness being typical from this latitude in the spring:
"It was luxurious to have M77 high enough to be an easy
catch with my 8-inch Dob. Next I went after M74 with my
star atlas and failed on that first 10-minute attempt due to
the variable transparency from the cirrus cloud, Venus shining on the cirrus, the bright zodiacal light, and from merely
ESO / IGOR CHEK A LIN
Object
Sky & Telescope - April 2019
Table of Contents for the Digital Edition of Sky & Telescope - April 2019
Contents
Sky & Telescope - April 2019 - Cover1
Sky & Telescope - April 2019 - Cover2
Sky & Telescope - April 2019 - 1
Sky & Telescope - April 2019 - Contents
Sky & Telescope - April 2019 - 3
Sky & Telescope - April 2019 - 4
Sky & Telescope - April 2019 - 5
Sky & Telescope - April 2019 - 6
Sky & Telescope - April 2019 - 7
Sky & Telescope - April 2019 - 8
Sky & Telescope - April 2019 - 9
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Sky & Telescope - April 2019 - 11
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Sky & Telescope - April 2019 - 14
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Sky & Telescope - April 2019 - 18
Sky & Telescope - April 2019 - 19
Sky & Telescope - April 2019 - 20
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Sky & Telescope - April 2019 - 25
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Sky & Telescope - April 2019 - 28
Sky & Telescope - April 2019 - 29
Sky & Telescope - April 2019 - 30
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Sky & Telescope - April 2019 - Cover3
Sky & Telescope - April 2019 - Cover4
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