Observing Challenges for September

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Year Beginner Intermediate Advanced Lunar

Messier 56
- A Globular Cluster in Lyra
- 8.3 apparent magnitude
- 8.8’ in diameter

NGC 6905
- Planetary nebula in Delphinus
- Also known as the “Blue Flash Nebula”
- 10.9 apparent magnitude
- 1.2 arc-sec in diameter
UGCA 429
- Lenticular galaxy in Pisces
- 15 apparent magnitude
- 0.9’ x 0.4’ in apparent size
- Lunar Impact Crater in southern highlands
- 145km in diameter
- 4.5km deep


Globular cluster in Sagitta
~13kly away
6.1 apparent magnitude
7’.8 in diameter
Spiral Galaxy in Pegasus
15th magnitude
1’ x 0’.6 apparent size
Einstein’s Cross
Quasar in Pegasus
Gravitationally lensed by galaxy
16.78 magnitude in brightness
2” in apparent size
Klaproth & Casatus
Double crater near southern limb of the moon
119 & 111km wide

Messier 110
Satellite galaxy of the Andromeda galaxy
Dwarf-elliptical galaxy
Mag 8.92

NGC 7354
Planetary nebula in Cepheus
12.9 magnitude

Palomar 13
Globular cluster in Pegasus
13.47 magnitude
2.2 arc-min diameter

Crater Timocharis
Lunar impact crater in Mare Imbrium
34km diameter
3.1 km deep


Messier 20
HII region in Sagittarius
Also known as NGC6514
Bright target at 6.3 apparent magnitude

Barnard 86
Dark nebula in Sagittarius
5.0’ in size
Opacity of 5
Sandwiched between NGC 6520 and 7th mag orange star

Abell 70
Planetary nebula in Aquila
14.3 apparent magnitude
Pretty small at only 42”
Also known as PK 38-25.1

Montes Harbinger
Located on the northwestern edge of Mare Imbrium
Covers an area about 90km 2


M27 - The Dumbbell Nebula
Planetary Nebula in the Constellation Vulpecula adjacent to Sagitta
8th Magnitude
Visible in small scopes

NGC 6946 - The Fireworks Galaxy
Spiral galaxy in Cepheus
9.6 Apparent Magnitude

NGC 6196
Galaxy in the constellation
Just south-west of M13
13.9 Apparent Magnitude

Rupes Recta
The “Straight Wall”
Best visible lunar days 8 and 22
Located in Mare Nubium