M45 Pleiades

A close group of hot young stars in Taurus.

 

Object Details:

 

Messier 45, Seven Sisters, Suburu Cluster.

Constellation: Taurus.

Visual magnitude: +1.5

Apparent diameter: 120 arc-min. (about 4 Lunar Diameters).

Actual diameter: 15 light years.

Distance: 430 light years.

 

Image:

 

Exposure: 11 x 60s, 840mm, f/7, ISO 250.

Date: 2017-11-22.

Location: Leumeah, NSW.

Sky: suburban sky, some cloud.

Moon: 4 day crescent, low in West.

Processing: Canon DPP > Deep Sky Stacker > GIMP.

Cropping: no.

 

Gear:

Imaging telescope: Skywatcher Esprit 120ED Super APO triplet refractor.

Focal length: 840 mm, focal ratio: f/7.

Imaging camera: Canon EOS 60D.

Guiding: off (due to RA corrections failing).

Telescope mount: SkyWatcher EQ6-R.

Polar aligning: QHYCCD PoleMaster.

Field flattener: yes; filter: no.

Done