IC 2602 – Southern Pleiades

Having imaged the Pleiades star cluster recently, I found myself imaging IC 2602 (Theta Carinae Cluster) a couple of weeks ago, on my last session before the Full Moon.

This object is the third brightest open star cluster and is reminiscent of the Pleiades (in Taurus). So IC 2602 is often referred to by astronomers as the “Southern Pleiades”.

At a declination of 64° S and magnitude of +1.6 it is easily visible here in Australia on a clear night.

Also known as:

Theta Carinae Cluster, Caldwell 102, Melotte 102, Collinder 229, VDBH 103


You can follow Cosmic Focus by hitting the “Follow by E-mail” button near the bottom – and you can now also follow Cosmic Focus on Twitter as @cosmicfocus1 (don’t forget the “1”, thanks very much!)

Constell: Carina Altitude: 39° above SE
Magnitude: +1.6 Apparent Size: 100′
Diameter: 15.3 light years Distance: 530 light years
Exposure: 24.8s x 96 live stack Gain: 92
Date: 2019-02-11 Time: approx 10.20 pm
Location: Home Sky: Suburban pollution
Cloud: Mostly clear. Moon: 33% 11.30 pm set
Acquisition: SharpCap live stack. Processing: GIMP
Cropping: No
Telescope: Skywatcher Esprit 120ED Type: APO triplet refractor
Focal: 840 mm f/7 Mount: SkyWatcher EQ6-R Pro
Camera: ZWO ASI 071 MC Pro Type: CMOS 28.4mm 16 Mpx
Optical aids: Flattener: yes; filter: no. Guiding: No
Polar aligning: QHYCCD PoleMaster Polar Error: 03’ 15”

Link to annotated astrometry image.

Geek Log:

[ZWO ASI071MC Pro]
Debayer Preview=On
Output Format=PNG files (*.png)
Capture Area=4944×3284
Colour Space=RAW16
Hardware Binning=Off
Turbo USB=100
Frame Rate Limit=Maximum
Timestamp Frames=Off
White Bal (B)=50
White Bal (R)=50
Cooler Power=100
Target Temperature=-15
Auto Exp Max Gain=300
Auto Exp Max Exp M S=30000
Auto Exp Target Brightness=100
Mono Bin=Off
Anti Dew Heater=Off
Banding Threshold=35
Banding Suppression=0
Apply Flat=None
Subtract Dark=C:\Users\Roger\Desktop\SharpCap Captures\darks\ZWO ASI071MC Pro\RAW16@4944×3284\31.6s\gain_92\dark_10_frames_-12.3C_2019-02-11T10_30_50.png
#Black Point
Display Black Point=0
#MidTone Point
Display MidTone Point=0.5
#White Point
Display White Point=1

Images © Roger Powell


Leave a comment or ask a question . . . .

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s