Basic object information
Object name: NGC 6440
Object type: Globular cluster
Magnitude: 9.3
Size: 4.4'
Object classification: V
Description: pB,pL,R,bM
Notes: H I 150;* eF

Catalog information
RA (J2000.0): 17h 48m 54.0s
Dec (J2000.0): -20 22' 00"

Constellation: Sagittarius

Observer: Iiro Sairanen
Obs. place: Pico de la Nieve (1540 m), La Palma, Spain
Date/Time: 3/4.4.2008 5:20

Telescope: Newton 110/805 mm

Magn: 230x

Filter:

Field: 21'

NE Lim.mag: 6.7

Background sky: 2

Seeing: 3

Height: 35
Visuality: I
Weather: +9C, strong wind

A pretty extensive core compared to surrounding halo. It's little bit elongated in NE-SW direction.