M 25 - OPEN STAR CLUSTER

Sagittarius

 (ra: 18:31,6 / dec -19:15)

DATA

TYPE: Open Cluster  

VISUAL MAGNITUDE: 4.6

SIZE: 32 arc minutes

DISTANCE: 2000 light years

OBJECT DESCRIPTION

Didn't want to loose this object in the 2007 season. It deserves more exposures, but it was quite low for my backyard in Buenos Aires suburbs. M25 is located half a way from kaus Borealis (Mg 0.94) and Gamma Scuti (-0.11). A nice sight for binocculars or small telescopes for those chaps who live in light poluted locations. In this case the object was imaged with an achromatic refractor which is used as guide scope.

IMAGE INFROMATION

TELESCOPE: 70/400 Synta Achromatic Refractor, Vixen GPDX Mount, Sky Sensor 2000

SKY CONDITIONS: Bad. Very low from my house roof. Just one finger

CAMERA: Canon 20 Da

FILTERS: IDAS LPS II

EXPOSURES: Ha 15 x 30 seconds

GUIDING: none

PROCESSING: Calibrate darks, flats, and offsets in ImagesPlus. Photoshop CS