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SIMEIS 147 AKA SHARPLESS 2 - 240

SUPERNOVA REMNANT IN TAURUS & AURIGA

 (image centred at ra: 05.41,19/ dec 27:47)

 

INVERTED IMAGE

 

Collaboration with Carlos Caccia, Leonardo Julio - Proxima Sur

October 2009, Intendente Alvear,  La Pampa, Argentina

 

 

DATA

TYPE: Supernova Remnant

Apparent Magnitude: extremely faint

Apparent Diameter: 3 degrees

DISTANCE: 3000 lights years

 

IMAGE INFORMATION

SCOPE: Pentax Takumar 135 mm f2.8 Lens. Stop at 3.5 riding in a LXD 55 6"SN telescope

CAMERA: SXVF H9

GUIDING: 6" SN Telescope

IMAGE ACQUISITION: AstroArt 3.0 - Control Interface 3.72 plug in

FILTERS: Astronomik Ha 6 nm - Atik Filter Wheel

SKY CONDITIONS: rural skies - transparency good. Object 25º from the horizon

EXPOSURES: Ha (120) 2x 10 minutes + 5 x 20 minutes

PROCESSING: Images Plus, Adaptive Add & Digital Development, Plus CCD Sharp, Photoshop CS3

 

OBJECT DESCRIPTION AND IMAGE SESSION

Simeis 147 is a supernova remnant after the explosion of a massive star at least of eight times solar masses occurred some 100.000 years ago. The object belongs to the constellation of Taurus and Auriga. A big target for the H9 due to its considerable size of 3 degrees. The explosion has expanded star material over 150 light years. Recently a pulsar was discovered being the only element left of the dying star.

The image showed is an Ha rendition along with an inverted image to see how the structure spans over the background.

A very faint target. The first two ten minutes exposures were not enough considering the fact that the object was not at its high altitude, so we pushed the mount to 20 minutes. Unfortunately there was no time for the colour channels so we just covered the Ha band.

 

 

SIMEIS 147 AKA SHARPLESS 2 - 240

INVERTED IMAGE - SUPERNOVA REMNANT IN TAURUS & AURIGA